Teardown of a "date back" or "data back" camera and description of how it works: A micro LCD projector with incandescent light bulb! / appliedscience
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@ThisOldTony4 жыл бұрын
I really enjoyed that!
@mib51163 жыл бұрын
Tot also watching Applied Science.....awesome!!!!!
@DynoRC3 жыл бұрын
This is where only_hands meet
@kyezaeta4 жыл бұрын
Such an innocuous little detail that I wouldn't have known to be this interesting if it wasn't for your curiosity.
@solotekle29994 жыл бұрын
Not to Brag, I new about this on my parents camera. the only thing I couldn’t figure out was how the camera print picture on the film.
@katt20023 жыл бұрын
I really thought it was 7-segment LED but he made a point that making 7-segment LED that tiny in 1990 was a challenge, not some technology you casually put in common $30 devices. this mini projector is the perfect solution for the job, really clever and kudos to the inventor. And not mentioned in the video is I think the bulb draws energy from AA battery source instead of CR2025, correct me if I'm wrong.
@Techmoan4 жыл бұрын
That was fascinating. Thanks.
@Markle2k4 жыл бұрын
Much more informative than a channel such as "What's Inside?" that just destroys stuff for shits and giggles.
@therealchayd4 жыл бұрын
"science" vs science.
@JoranGroothengel4 жыл бұрын
I really can't stand that channel
@brien12544 жыл бұрын
Joran Groothengel When he bought a new Tesla just because he needed new tires because they were never rotated was when I really lost hope in that channel.
@DMarko224 жыл бұрын
True
@CarnivorousPlantsAndGardening4 жыл бұрын
@@brien1254 just rich people showing off the fact that they money...
@Flumphinator4 жыл бұрын
>probing a camera that was $30 30 years ago with a $10,000 oscilloscope That's the stuff.
@ToriKo_4 жыл бұрын
Mike Donaghy the link isn’t working for my device - how much is it?
@pluscrafter71174 жыл бұрын
up to 22'200€
@ToriKo_4 жыл бұрын
Pluscrafter Jesus Christ
@marios18614 жыл бұрын
@@ToriKo_ oscilloscopes are the most important tool for any kind of electrical and electronic engineering
@justy2564 жыл бұрын
eBay searches "Tektronix mixed signal oscilloscope"
@roncrotzer98614 жыл бұрын
Back in the mid 80's I worked for a company as a machinist that made alphanumeric data backs. A row of micro LEDs were set flush to the backing plate and they fired when you advanced the film. The system worked much like a dot-matrix printer. We used a TRS-80 Pocket Computer to input up to 40 alphanumeric characters of text. We mostly sold our system to police departments and federal agencies. Thanks for the video...
@enda3204 жыл бұрын
I've seen it so many times, never thought about it or how it was done.
@volvo094 жыл бұрын
Yep, and this explains the color and focus fuzz. Awesome!
@demandred19574 жыл бұрын
I was curious about how it was done, but I wasn't about to tear my Minolta camera down to find out.
@demandred19574 жыл бұрын
@@NerdyNEET Are you young? this was all over the place mid 90's-early 2000's
@mattiloponen924 жыл бұрын
Same
@DetectiveThursday4 жыл бұрын
NEY Industries it’s helpful for things that need the date and cannot be easily reproduced. For example, police recording evidence and also need to record when that evidence was found
@jincyquones4 жыл бұрын
11:43 🙄 Typical eBay listing... "[UNUSED] USED. TOTAL CONDITION: UNUSED. An item that has been used previously"
@abyssstrider25474 жыл бұрын
And don't forget the text which says: an item may have signs of...
@abyssstrider25474 жыл бұрын
@@squishy3217 Woah is that what it actually says?
@futureboy76534 жыл бұрын
It has a quantum condition.
@exys20864 жыл бұрын
@@abyssstrider2547, haha, it's most probably a joke x)
@abyssstrider25474 жыл бұрын
@@exys2086 I know but its quite true
@martinh.30584 жыл бұрын
Just to put a few things correct: The Base Colour is not orange: The orange Mask is formed during development and not present prior to it (and it is not uniformly... rather its density depends on the amount of exposure in the area.) The base is usually transparent or of a neutral grey colour. The reason that the numbers are red/orange is a result of two things 1. The sequence of the colour sensitive layers and filters in the film and 2. Only the red layer is sensitive to red light. From the emulsion side to the base the order of sensitive layers (SL) may look like this( there can be more layers but in general it is this sequence): blue SL -(filter passable for green+red light)-green SL-red SL-Antihalation layer(AHL). So why are they red? As it comes the AHL blocks a good part blue and of the green light of reduces the red part (it depends on the manufacturer and what dyes they use). If exposed through the base the light has to travel through the AHL (prevents light piping through the base) and then the red sensitive layer and then the green sensitive and then the blue filter), since the residual light lacks any blue the result are red orangey numbers. The AHL dyes are washed out during development and are never to be seen in the developed film. Anyway film is extremely complex, it is quite interesting what sort of knowledge is needed to make it...and how sensitive to certain things it is.
@Muonium14 жыл бұрын
In the basement at Kodak Research Labs they used to have a secret (known only to the local fire DP at the time for emergency situations) subcritical nuclear reactor that used highly enriched weapons grade uranium and californium (ie. a neutron multiplier) just to produce a neutron beam so they could neutron activate random test lots of film and examine the trace element and even isotopic composition of the product for consistency. The technique was so insanely exquisitely sensitive they could detect the seasonal change in diet of a certain flock of sheep kept specifically for the purpose of producing a tiny trace additive (from the wool if I remember right?) to one of the film base's secret ingredients. THAT'S how complex film production was.
@martinh.30584 жыл бұрын
10mintwo , didn't know that Kodak checked their film with NAA. Something related to this: in 1925 a Kodak emulsion engineer found that if a cow ate mustard seed, the gelantin produced from it increased the film speed.
@laureven4 жыл бұрын
Thanks for this 😊.
@ruevs4 жыл бұрын
In addition most C41 negative film was daylight balanced (white balance in today's digital cameras) which is 6500K; on the other hand that tiny incandescent bulb is probably about 2000K - and therefore yellow-oragne-ish.
@PenZon4 жыл бұрын
I was thinking that the reason for the amber colouring might well be explained by the fact that the light source is an incandescent bulb: when you turn it on, it doesn't just immediately produce white light, it ramps up through the wavelengths as the wire (relatively) slowly heats up. The same is reversed when the bulb cools down. Thus the combined dose over time, i.e. the exposure has a portion of it in redder hues. I don't know if the warm up/cool down time in the cycle is significant enough to actually make any difference, but this was my first hypothesis.
@mohdghadiyali4 жыл бұрын
My dad was a photographer, you just solved one of the mistries of my childhood. Thanks
@whuzzzup4 жыл бұрын
4:10 I also always casually measure a voltage with a $15k scope.
@SireSquish4 жыл бұрын
Invariably, Applied Science shows something that would be otherwise mundane to be actually fascinating.
@Guysm1l3y4 жыл бұрын
I love that this was from back in the day when there were still screws to remove. These days it more likely than not would be one ultrasonic welded hunk of plastic that you'd have to destroy to get into.
@StuSona4 жыл бұрын
First thing I thought when I saw the assembly.
@pilotofjet4 жыл бұрын
I teared down a "new" film camera from the 2000's (kodak aps) to re-use the photoresistor in an older , easier to repair film camera and you are completely right, it was easier than items from today but not as easy as the old camera
@rkan24 жыл бұрын
Products from Japanese brands that are not meant for single use, still usually contain plenty of screws.
@cybercat15314 жыл бұрын
I've taken apart several modern cameras, and anything that wasn't an ultra cheap trash camera is put together with plenty of screws and clips. No fused plastic 'rivets' or much glue at all. Everything from Nikon Coolpix L20, various small Fujis, an HS50, small Canon A480, ,G15, Canon 7D MK 1 and 2, not to mention several no name brand Chinese cameras. All perfectly disassembleable, repairable and reassembled without much fuss. Though it does require patience, a microscope and steady hands. Some soldering also required to disconnect ribbon cables.
@ArchangelExile4 жыл бұрын
@@rkan2 This
@TickyTack234 жыл бұрын
In 70 years the date will be accurate again.
@ToriKo_4 жыл бұрын
TickyTack23 fuck 2090 is only 70 years away
@ArchangelExile4 жыл бұрын
@@ToriKo_ Don't worry, we'll probably be dead by then.
@ToriKo_4 жыл бұрын
ArchangelExile with rising life expectancies, possibility not
@GRBtutorials4 жыл бұрын
Tori Ko Also, don’t forget about the younger viewers.
@smooooth_4 жыл бұрын
@@ToriKo_ I'll just make sure I eat really really unhealthy
@mlittletn4 жыл бұрын
Fascinating breakdown. Never occurred to me how that date got on there. Now seeing the breakdown I’m really impressed with engineering involved to get that date to show.
@vinesauceobscurities4 жыл бұрын
RIP film camera 1990-2019
@onyourface2074 жыл бұрын
Vinesauce Obscurities what technology will last nearly nearly 30 years these days.
@saltysoysauce9544 жыл бұрын
@@onyourface207 My computer probably, oh and also my camera apart from the batteries in it
@yootoob60034 жыл бұрын
My Nikon FM2 will live forever, it has no date back
@onyourface2074 жыл бұрын
SaltySoySauce 30 year old computer hahaha! What OS?
@StraightOuttaJarhois4 жыл бұрын
just a little over two months away from retirement :(
@aetius314 жыл бұрын
Still the sharpness is impressive for a point source that close
@netpilot54 жыл бұрын
Actually, it always used to bug me that the date was so blurry. A tiny plastic lens could possibly have focused the incandescent light better.
@o0julek0o4 жыл бұрын
If you think about it, the shadow projection (so how this masks off the areas around the numbers) is only suitable for close projection. The further away the little screen would be the blurrier the numbers should be until they are essentially invisible.
@rafitheredfox3284 жыл бұрын
This reminds me to when I found an old photo camera in my grandmother's home, which I took to bits, because my grandmother didn't need it anymore and affordable digital cameras already existed, because it was back in maybe in 2006 or 2007. I also found such a tiny LCD-screen, which I instantly new, that it was for the date "printing" but I don't remember if it was located at the back of the film or in front of it. What I find amazing btw is that analog photo film develloping services still exist here in Germany in some supermarkets considering that digital cameras are now omnipresent these days. You can also find such tiny LCD-screens in projector alarm clocks. I got one for about 1€ on a flea market and took it to bits and found an LCD-screen of a similar size.
@alexcavalco28154 жыл бұрын
If you flip film around and expose it through the back, it shifts everything red too. A few companies like Lomography sell film that was re-rolled the wrong way to get the effect--called redscale. The red dye layer is also the last layer that light hits with color negative film.
@b6983832 Жыл бұрын
This is based on the fact all silver halides are sensitive to blue light. If exposed correctly, the blue light would be filtered out after the yellow (blue sensitive) layers, When exposed from the back side, this is not the case.
@1944GPW4 жыл бұрын
Intriguing teardown, thanks for showing how it works. Regarding mechanical film timestamping the Databack has precedents. During WWII and after, some aircraft photo reconnaisance cameras had timestamping on the film. I have one such camera, it's a british Air Ministry Type F46, 5" focal length lens taking a 2"x7" negative, running on 24 volts. On the bottom face of the camera body casting at the righthand side is a small box housing (labelled 'F46 WATCH UNIT' and A.M. number) that can be removed by sliding off. Inside is some black felt and a circular cutout for a tiny fob watch of no more than 1" diameter. Inside the housing body where the box attaches there are two festoon light bulbs to illuminate the watch face, and a 45 degree mirror and light pipe extended to the corner of the film plane to record the time of day the photograph was taken.
@RandyJames224 жыл бұрын
This reminds me of the scene in _Alien_ where Ripley is accessing the MU/TH/UR 6000 computer. It shows a projection of the screen on her face, but when I think about it, there's no way that she could read the screen that way.
@renakunisaki4 жыл бұрын
Modern films where all screens are transparent for some reason, but when viewed from behind, the image isn't mirrored.
@TheAechBomb4 жыл бұрын
@@renakunisaki I like to think they just mirrored the camera image
@JuiceJive4 жыл бұрын
2001 has a similar scene in the close-up shot of Dave in the pod. That's a fairly common trope in movies with computer/radar screens and it always bugs me. tvtropes.org/pmwiki/pmwiki.php/Main/Cukoloris
@webchimp4 жыл бұрын
@JuiceJive That and having bight lights in the helmet lighting up the person's face.
@didzisveinbergs5714 жыл бұрын
Such a cool teardown, thanks! There's another thing about the date always being orange: colour film actually consists of several light sensitive layers, each sensitive to different light. The layer closest to the base of film -- and, therefore, the closest to the date imprinting back -- is sensitive to red light. So, when the light hits the film, it hits the red-sensitive layer first, which makes it this reddish colour. The same effect is sometimes done on purpose: the film is rewound the other way around, with base towards lens and emulsion towards the pressure plate. The resulting pictures are a reddish colour, much like the date on the photos. As a result, this is called "redscale". I suspect that with redscale film, the date would actually be white.
@feltusfeicit4 жыл бұрын
“Red scale” is a process by which film is flipped and exposed backwards (colour neg), and this gives a red tint to images. This is due to the order in which the colours are layered: longer wavelengths penetrate deeper, so red is always the closest to the base of the film. This is why the numbers have a reddish tint.
@johnmccanntruth4 жыл бұрын
I feel like only us old guys can really appreciate this. That time stamp was a revolutionary process in photography. Amazing that we find out 25 years later how it worked...
@resneptacle4 жыл бұрын
Nah
@GrayHatter4 жыл бұрын
Psh, that camera is good for another 2 months at least!
@sopgenorth4 жыл бұрын
And then it'll be good for your kids/grandkids again in 2090!
@weithiamneo14424 жыл бұрын
Maybe cost of film and development will cost more than the camera now.
@PirateRadioPoland4 жыл бұрын
@@weithiamneo1442 I can't predict much about the cost of film, but development is - and most likely will still be - dirt cheap and you can do it at home. In a pinch, you can even process a C41 (color) negative in ancient (created in 1890s) Rodinal, or even coffee (google: caffenol processing). Of course by doing that you only get black & white pictures, but hey, that's still analog photography, with the added fun of experimenting!
@among-us-999994 жыл бұрын
Jakub Dołęga wouldn’t analog photography imply that it uses analog electronics?
@PirateRadioPoland4 жыл бұрын
@@among-us-99999 Analog photography traditionally means using analog medium (photosensitive film) to capture images. The control electronics don't really matter much - a roll of 35mm film would work the same way in 1925 Leica and in 2018 Canon EOS-1V. Now that's some serious backward compatibility!
@oetken0074 жыл бұрын
The most interesting things are these small details we have around us all the time but no one questions it's function or design! Thank you!
@TheDoomWizard3 жыл бұрын
I'm 31 & been a photographer half my life & still never knew this. This video is a gem. Thank you.
@realpdm4 жыл бұрын
I honestly never wondered how this was done but I am now glad to know and I wonder why I never wondered because it is pretty fascinating and unexpected . Thanks for sharing!
@clarkgwillison4 жыл бұрын
I loved the shadow puppet light source demonstration, illustrated the concept perfectly
@NoName-ik2du2 жыл бұрын
I clicked this thinking, "Man, a fourteen-minute video on camera date superimposition? This is going to have a lot of fluff in it," but much to my surprise, this entire video was useful and engaging. Thanks for the interesting teardown.
@alexecheverria4 жыл бұрын
I knew the man who patented this: Lester Wolfe.
@alexecheverria4 жыл бұрын
web.mit.edu/spectroscopy/events/wolfe.html
@TheTAEclub4 жыл бұрын
That is so cool!!!
@Filaxsan4 жыл бұрын
Woow :O
@MaleGeminiCat4 жыл бұрын
Cool
@southerncharity79284 жыл бұрын
@Christian William boyfriend
@ut43213 жыл бұрын
This is wonderful. All the steps to figure out each element were fun to watch. I am glad I watched until the end, because I kept wondering "wait, the date display is BEHIND the film!" Fun video!
@Luchoedge4 жыл бұрын
Outstanding! the ingenuity used in some everyday objects really amazes and amuses me to no end! Thanks a lot for your work! I really appreciate it!
@ilanpenkower4 ай бұрын
I was looking at an old picture of my dad I have hung up in my dorm, and I was wondering exactly this. You explained it wonderfully, thank you
@MrGeoffHilton3 жыл бұрын
This channel is totally compulsive viewing, great work and hope you never get tired of doing it. .
@FesixGermany4 жыл бұрын
Watching someone explain how a camera works with a roll of film makes me feel so old...
@cpufreak1014 жыл бұрын
Perhaps that could be something I can try to film. Have an old camera from 1957 that's 100% mechanical, and it's a good camera to demonstrate fundamentals on (and in fact, is how I learned the fundamentals as I grew up after the film era lol)
@MaheshJoshi4 жыл бұрын
Amazing technology. I used to have a Konica Minolta camera during 1993-2000 and I have prioritized it over then hot favorite Kodak film cameras because it has date and time stamp feature. Although I paid few buck more, it was a big amount in those days. When I purchased digital cameras I disassembled the Minolta one and kept its back door (containing date/time lcd) and its flash with charging circuit and a big capacitor. All is still in my junk box.
@AndyCallaway4 жыл бұрын
Ok, that was more interesting than I thought it would be.
@IanGrams4 жыл бұрын
Thanks for feeding my curiosity, Ben :] I'd never thought about how that works until now. Really quite interesting to see an LCD and incandescent bulb working together.
@neotoy4 жыл бұрын
That circuit board trace layout is a true work of art, whoever did the layout for that was a master.
@snowdaysrule4 жыл бұрын
This was very cool! I'd never thought about the mechanism of the date display on a film camera. As a kid one of my favorite things to tinker with were disposable instant film cameras that I had gotten for free from my local drug store. They were this really cool mix of mechanical parts and electrical circuitry, all under the influence of cost-optimization which resulted in a ton of simple, yet genius design choices. Due to being disposable these cameras did not have the date display feature present in this model so I'd honestly never thought about it since the cameras I had on hand to explore did not have the feature.
@ozzy12804 жыл бұрын
This is incredible. Would never have thought such complexity lies behind such a tiny result. Makes me think about all the crap around me and all the years of scientific and engineering iteration and progress that led to it. Mind = blown.
@adamkendall9974 жыл бұрын
Well you definitely voided that warranty.
@DukeBG4 жыл бұрын
oh no, not the 30 year warranty
@garethronaldo86924 жыл бұрын
@@DukeBG 😂
@gyroninjamodder4 жыл бұрын
I doubt there was even a warranty to void.
@sirzebra4 жыл бұрын
@@gyroninjamodder i doubt you grasp the concept of humor.
@ArtturiSalmela4 жыл бұрын
I was wondering about this just the other day. Using a point-source without optics didn't cross my mind. Very clever indeed!
@kjamison59514 жыл бұрын
I owned a Ricoh camera with this feature. Given the LCD tech at the time and ‘reverse’ LCD displays, I figured this was the setup but it’s still so cool to see it taken apart.
@stefankuttenreich86684 жыл бұрын
Finally a question i can answer @ 12:45 @appliedscience The date appears red because of the chemical emulsion in the film, there are 3 types of chemical in a film layered up over each other. Normally, when you shoot the film "correctly" the blue sensitive layer is up front, then comes the green one and then the red one. But if you shoot the film flipped, the red sensitive layer is the first one that is exposed to the light, some photographers even shoot photos like this intentionally to give the film a red look, that's also why this style of shooting is called "red scale". And thats exatly what happens here, the photo is still exposed the right way, but the data back exposes the film from the other side hence it appears red/orange.
@antoniomaglione41013 жыл бұрын
I have always been curious of how the date camera back worked. Fourty years late, I have found the answer you provided! Thank you very much.
@plebcrabslayer2 жыл бұрын
No three-minute introduction, no thirsty valediction, the video is exactly what the title says; oh, and it's interesting! You hit the quadrifecta, sir.
@nrdesign19914 жыл бұрын
That is indeed super clever. The optical path has some baffles that eliminate reflections from the light path
@choninwong3554 жыл бұрын
I recently brought an old date back camera which is the same type my mum used when I was a kid. Unfortunately, after the New Year Eve it turned to 1980 instead of 2020 and I really want to hack the little piece to extend the limit of date. Camera with date printing back has special meaning to me and I will look forward to your following videos.
@choninwong3554 жыл бұрын
There is almost no information about date back camera so this video means so much to film camera photographers.
@DisdainforPlebs4 жыл бұрын
Wow this guy actually dremels a hole in his precious camera with which he has some good memories... quite some dedication, thanks man!
@ChristopherWoods4 жыл бұрын
So awesome. Thanks for doing this and finally satisfying my inner childhood curiosity. Some great creative engineering to a price point to make this happen. No way I could afford to disassemble my film camera when I was young to figure this out!
@justy2564 жыл бұрын
I always find your explorations interesting- and informative.. and articulate.
@snacksy77544 жыл бұрын
These engineer guy type of videos are great. I know they are time consuming, but allways verry enjoyable!
@pilotofjet4 жыл бұрын
More film camera tech please, there is so much outdated and cool tech that we are forgetting about in these. I use film cameras partly because i love the amount of engineering and sophistication that goes into these compared to all computerised based systems that we have nowaday (still cool but you can't really see it)
@GRAYgauss4 жыл бұрын
Computers just make things too easy. (I say that as a developer of both electronics and software) Analog is always so cool because they really have to go for reduced complexity just to make it work, fit, be cost effective....etc. Nowadays just throw a $3 mc that you use 10% of it's features in an unoptimized fashion and it still provides more power in smaller space and less intricacies of the product. (Not the mc, what it's used in)
@scythelord4 жыл бұрын
@@GRAYgauss Nothing easy about computers. Sure they're mass produced, but they're the most complex and delilcate devices ever created by man. Economies of scale result in the $3 board. Sure, it's neat to see mechanical devices that got it done in the past, but there's way more engineering done on the computerized side to get it working like it does.
@TheDisruptiveYouTuber4 жыл бұрын
Not outdated. Some of us (me included) still use it. In fact I use it exclusively. Digital cameras don't produce an image that's nice looking IMO.
@cpufreak1014 жыл бұрын
Can agree, my oldest camera dates from 1957 (amazingly I have the original box too!) And there's just something amazing about the fact no electronics are used to get a picture. That camera would go through an EMP and be unphased by it. If curious what camera, Argus C-20. It's an updated version of the C3 from what I could find.
@pilotofjet4 жыл бұрын
y2keable I'm not saying film photography is outdated ! I am using film cameras most of the time over my DSLR. I just love the fact that when all of our modern life revolves around computer science, it is still possible to make a great looking image using only analog technology, good mechanical and optical design and some chemical emulsions. So in a sense it is outdated as little to no development is done on new film cameras.
@CraigHollabaugh4 жыл бұрын
Nice find, love the optics slant. Thanks.
@vjm34 жыл бұрын
The moment you mentioned it projects light on to the film, I said to myself "Wait, how does it use only light to make the numbers on the film?" The second you mentioned how everything needs to be absent of light, or it'll ruin the film, I realized the light it projects through is specifically ruining only that small section of the film to MAKE the numbers! So what we're seeing on a photo is in essence a section equivalently "scratched off" as if you were removing only part of a tint off a tinted window. It's so simple, yet cool. I just assumed this whole time it was digital, even back then.
@warrenmacdonald13724 жыл бұрын
Thanks for the superb video. I have a Canon A-1 which I purchased in 1979, and it came with the data back, much like the Nikon except the wheels were not interchangeable. The whole data back came off as the back of the camera and the cable ran into the sync port on the camera, so the date would be applied whenever the shutter was tripped. There were three intensity settings based on the ASA of the film you're using. The light emitted was a bright white, and this resulted in at pleasant Orange image on the film. As I recall it used its own Mallory PX -28 6V battery, which is what the camera also used. Past memories, thank you
@billythebake4 жыл бұрын
Found this channel recently; been 'going down the rabbit hole' w/these vids Just wanted to say: keep up the good work!
@arthurdent55364 жыл бұрын
Great Video! I didn't think, this little detail could be so fascinating. One thing though... *happily touches film with bare fingers* TRIGGERED
@Kysen104 жыл бұрын
I was hoping you’d reprogram the LCD to go past 2019
@Neimonster4 жыл бұрын
Do not play god
@PIasticShadow4 жыл бұрын
I was too lol
@juststeve55424 жыл бұрын
it's a blob on board, so not much hope...
@_BangDroid_4 жыл бұрын
Might require a few jigawatts of power
@electronixTech4 жыл бұрын
I was thinking the same thing. Do a mod to extend the date past 2019.
@PeterAbt4 жыл бұрын
Thanks, unexpectedly interesting again! Amazing what interesting Details you analyse out of this stuff all the time!
@rselvarajanMBA4 жыл бұрын
I have seen the dates in old photos but never thought the process would be so fascinating 👍 Wonder how many more fascinating processes I miss everyday.
@MLGJuggernautgaming4 жыл бұрын
Once again something I never thought about but find very interesting
@leafhappy2 жыл бұрын
Beautifully presented. Really appreciate the weave and mend that went into this film :D
@awgybop14 жыл бұрын
Great video, showed exactly what it promised. This is a great example of a video where dislikes do not make any sense; seriously, why would someone dislike this video? It showed exactly what it said it was going to, and even when into detail about the components.
@bendito9994 жыл бұрын
Is this possibly the cutest lil 7 segment display ever made? I think so.
@L0j1k4 жыл бұрын
Ah, hell yeah, man! I was wondering exactly about this a couple months ago and here we are! Couldn't ask for a better means of finding out.
@CyrilCavadore3 жыл бұрын
Those videos are really great, and I love this kind of explorations !
@zerocreatividad4 жыл бұрын
That's great!, thanks for showing this, i still takes pictures in old cameras with film and this was super interesting. The reason for the white light turning out red shifted on the film i think it's because of the composition of the film itself, which has 3 color layers i think being the last one (the closer to the back of the camera) the red one, which is the first layer that hits the LCD projector. There's a whole artistic technique in old photography called Redscale which makes use of this property of the film, the film is put on the camera inversed, so the red layer is the first to receive the light coming through the lens and produces red toned photographs.
@simontay48514 жыл бұрын
Also part of the reason the date appears red is because the tiny bulb produces a very warm colour temperature. Try replacing the bulb with a blue or very cool white LED and the date might not appear as red in an actual photo. Maybe pink, yellow or warm white, im not sure. Shining an LED torch through the film isn't enough. What ever colour the date would appear doesn't really matter anyway. Everyone uses digital cameras now. There might be some niche applications/reasons a film camera is still used.
@Nitrxgen4 жыл бұрын
he literally disproved that at 13:22 with his cool white led torch, watch the video man
@simontay48514 жыл бұрын
Im going to rephrase my comment a bit.
@Zebra_M4 жыл бұрын
Today on "Things I didn't know I wanted to know until I read your video title..."
@WillProwse4 жыл бұрын
You have the coolest videos man. Always unique
@FuzzyTekShow4 жыл бұрын
It never even crossed my mind to wonder how this was done until I see this video title. Very interesting, thanks for the great video!
@pomonabill2204 жыл бұрын
I have always wondered about this. Thanks for the teardown and explanation!
@justinoblanco4 жыл бұрын
Took me a couple of days to realize that I didn’t know how this worked, and that I was interested to find out. Glad I watched. Very curious device.
@TheLefse4 жыл бұрын
Fascinating! Always wondered about those... very cleverly engineered.
@MaleGeminiCat4 жыл бұрын
Your curiosity solves my long time question. Thanks. I love your channel.
@victormultanen19814 жыл бұрын
hi! thanks for great review! it is very impressive how people figured out this cheap way to project the date stamp on the film. I just want to add that red shift in the projected colour related to the fact that consumer cameras these days always turned white balance of in camera settings to get neutral look, so most of the shots were in daylight above 5000K, incandescent light is 2700K will always appear red or orange. in case you could adjust the colour temperature to 2700K, the date stamp will appear white coloured.
@mfbfreak4 жыл бұрын
You are correct, if the time stamp projector would have been projecting through the front of the film. If you expose film through the back, everything gets a reddish hue because of all the different emulsion layers you're projecting through. Lomography made a 'redscale' film that is just normal film, spooled onto the reel in such a way you expose it through the back. The emulsion consists of 4 to 12 coats in color film IIRC.
@samyish4 жыл бұрын
Fascinating! I was literally just thinking about this yesterday and today this video comes up as a recommendation.
@marctronixx4 жыл бұрын
KZfaq recommendations are on point again. I think YT knows me more than I know myself. Never knew this channel existed but Its exactly in line with my interests! Will be looking at other videos on this channel... thx KZfaq ..
@UpenShenoy4 жыл бұрын
Loved this vid. So much learning. Creative engineers, can. Imagine the challenges of those days limited by the tech available and cost
@BuckJolicoeur4 жыл бұрын
Very cool, I've wondered about this. Realising that the negative creates the orange colour is a nice realisation from the deconstruction.
@initialb1234 жыл бұрын
i really appreciate your uploads , thank you for doing what you do.
@gloverelaxis4 жыл бұрын
What a creative & clever system! Great video.
@VitorMadeira4 жыл бұрын
OUTSTANDING exceptional super-high-quality content video! I loved this one in particular. Thank you and greetings from Portugal.
@bigwave_dave84682 жыл бұрын
Regarding the color of the film. Teton Gravity Research did a documentary about how they started and one of the mistakes they made early on was to load the film backwards..and guess what..all resulting images were red. I love this kind of engineering - simple system with a lot of thought behind it.
@crobles19734 жыл бұрын
Thank you. I always learn something new from you that I never thought I'd like to know.
@Spender6044 жыл бұрын
Always interesting to see the ingenuity behind cheap solutions. The engineers really have to be creative.
@chris24hdez4 жыл бұрын
Very cool! Never even considered how it got on there! I wish all negatives had a way to encode time stamp to get placed on the back of prints or optionally in cleaner font superimposed on the image like with APS magnetic. It would save me lots of research time when trying to add dates to massive photo collections
@janezhen91254 жыл бұрын
It is so clear that every minor part is explained! Thx a lot!
@fromjesse2 жыл бұрын
As a kid I had an LCD calculator and the LCD did not have the front polarizer glued down, so I'd take it apart and flip it over and the LCD would then be all black except white segments. Looks like how they did your little LCD!
@Mariano.Bernacki4 жыл бұрын
Content like this is why I'm subscribed!
@mefpazur4 жыл бұрын
There's nothing unusual about LCD being all black, with translucent digits. It's just the way the polarizing film is oriented. During the early dot-matrix LCD era of mobiles, people would "hack" their displays by removing the polarizing layer and re-applying it rotated 90 degrees, thus "inverting" the display. Great vid, btw.
@RamLaska4 жыл бұрын
VERY nice analysis. I’ve often wondered the same thing.
@hardlyb4 жыл бұрын
I always learn something from your videos. Thanks.
@Beevreeter4 жыл бұрын
That was so much more interesting than I thought it would be before I watched it!
@electronicsNmore4 жыл бұрын
Great video. I remember when I was a 8 -10yrs old, how popular Polaroids were.
@omgubler4 жыл бұрын
Dang that's so neat! I used to always wonder this as a kid too. I'm glad that's one little curiosity itch that's been scratched.