Are you a teacher? Or were before YT? I am a photographer for 8 years, I watch like dozen of YT channels in French or English, you are definitely the best one to explain any basic or complicated things to the audience.

I must say as a Fuji owner I enjoy how you get into all the quirks of the camera, specially the non obvious stuff

Chris, no one else is doing this type of testing. So helpful and useful - thank you!

The amount of work that goes into your videos is incredible. The insight appreciated.

I shoot Lossless compressed for everything. Another very well informed post.

You are a rock star. This was super helpful. I’m shooting lossless uncompressed, but I’m switching to lossless compressed immediately. No need for those 57 meg shots.

You are consistently the most thorough KZfaq photographer. I am delighted when I have a question and a google search brings me to a video you made. It almost always is answered thoroughly.

Please note that in my version of Apple Photos on MacOs: Apple Photos can read uncompressed RAF, but not the compressed (lossless) ones.

Many people don't realise how important this subject is. Thank you really much for this video.

the only difference i've seen between lossless compressed and uncompressed in fujifilm files is that uncompressed files have a jpeg built in so that there is a preview on Mac computers even if the camera is unsupported by Mac firmware (lke the XT3).

Always, always excellent tips vs investigations! The best Fujifilm channel out there!!!

I follow you for over 1 year and half and I LOVE you each time I watch a new video… not kidding! you’re the most fun and with rich information to watch!!!! keep up 💪🏻💪🏻💪🏻

One difference between compressed and uncompressed is both iOS and MacOS doesn’t support displaying Compressed RAF files, and PhotoMechanic can’t write to them either if you’ve set it up to write to Raw, it writes to XMP sidecar files instead. Fortunately Exiftool does.

The other week I was wondering why Fujifilm X-T2 files are so much bigger than Nikon D750 files, and someone on Reddit explained that Nikon uses lossless compression. It made me look for an option to turn that on in my Fuji and I’m so glad I found it. I wish I had been shooting with lossless compression since I got my X-T1 over 5 years ago. Would have saved so much hard drive space.

Your videos are absolutely stellar! Sure I learn from many Fuji vids and tutorials on KZfaq, but yours are always where I learn the most information in the shortest amount of time, and walking away actually knowing something that sticks in my brain. Thank you for your efforts and attention to detail. You really know how to relate essential information without useless fillers. I wish more KZfaqrs delivered information the way you do. Keep on Rockin (in a free world?)!

I needed this so much, thank you for not rushing it and doing it properly instead ;) you the real MVP sir

Thank you, Chris for leaving no stone unturned. Always great work!

You are so thorough. Thank you for doing all the tests most of us can’t even come up with. Very helpful indeed

Excellent video! I've just purchased an gfx100s and so file management has become more important than ever. This was super helpful, thank you so much for the content as always!

Thx for testing this! And I keep shooting in uncompressed raw, just like you said: storage is cheap. AND thx also for testing the life span of your mechanical shutter 🙃🤪

Changed my setting from uncompressed to lossless immediately. I lost count of the settings I changed because of your advice. Thanks so much!

Love the depth Chris...U make understanding Fuji cams worth understanding 😁👌

Thank you for a very clear and understandable presentation

One major downside with compressed files. There's no preview available when using Mac OS. And I prefer to sort out the images before importing all of them to Capture One.

I've seen dozens of your video, and just now I was realizing a thing: you gesticulate like and more than an Italian 😅 Thanks, you're the best on youtube.

That was so helpful...will have to watch it again (dogs and family at suppertime can be distracting...grin) Raw compressed lossless sounds interesrting...🤔 So far have been leaving the XT4 and the X100v on jpeg + raw uncompressed, but thinking of changing the X100V to just jpeg...maybe...go back and forth on that)

I don’t understand why repeated opening of a compressed file would lower quality. It makes sense with jpgs since the application used to open/close the file is doing compression, but when shooting compressed, the camera is doing the compression of the raw file. Computer software should not be making any changes to a raw file at all, correct? The file data is left as is and an attached instruction set records changes. So why would a compressed raw file change?

Loved it! Please do a video on the mystery of the worms in Lightroom!

Silkypix Developer Studio Pro 10 is the best software to edit Fujifilm. Because, they are the company that created the Fujifilm X Converter. Also the company behind Nikon, Panasonic, Pantex raw converter. Highly recommended.

Great video as usual, so thank you once again. One thing you didn't mention in this video which I caught in another video of yours was that the Mac Finder cannot display Lossless Compressed RAW files. That's a pretty big deal for me as I like to be able to see what I have in Finder. Having seen this video before, I concluded the only way to view my RAW images in the Mac Finder was to include a jpeg. Turns out, as long as I use Uncompressed RAW, I can view those files easily in Finder without the need for the jpeg. Looking forward to your return. Enjoy your break!

Very, very helpful and incredibly interesting. Thank you.

a real test would be comparing the different compression formats on real-world pictures. Such as : fine foliage, grass , cat fur and so on. Only with difficult situation you would be able to see the difference between lossless and lossy compression.

If you every intend to convert Fuji Raw files on an iPad I recommend uncompressed, as there are a number of compatibility issues with iOS.

I definitely shoot uncompressed raw which gives you a little bit more data and that is because I am a landscape shooter and you need every little bit of data you can get because you need dynamic range and there is more data in the landscape photo than most of the photos when you're editing so for me, I shoot lost less raw, which does mean bigger file sizes. I can definitely tell in landscape photography, but I found it hard to tell in Street, Photography and portraits but definitely in landscape. She want as much data as you can and I'm a semi professional landscape shooter. Wow not full-time professional, but I'd still lots of images and do lots of printing say I want as much data as I can. What you didn't do, though and I have done is print and I'm talking large Prince of 1 m x 50 cm. If you do a very large print I guarantee you will notice a difference in image quality and that's why I shoot uncompressed raw and I did the same with Nikon as well when I was with Nikon. Yes it probably doesn't make any difference for a social media post because people are looking at their photos on phones and tablets and so forth you're not going to see any difference but if you're going to be doing large prints, then you will see a difference but 90% of photography isn't printed so probably 95 so if you're not printing then go with lossless or compressed nice, haircut to dude.....ha ha

Thank you very much for these very good explanations. How about a video explaining Fujifilm film simulations, surely that would be much appreciated

Another great post from the most entertaining and informative guy on KZfaq. I’ve no idea where you find the time for such detailed, thorough analyses, but thank you for doing so. Saves me the effort and time. Just switched my x-h1 to lossless and will see how it goes.

Another fantastic video. When reading the title, I didn't think this would be applicable to me, but as usual, I end up learning a lot from your content. Thank you!

This guy is enjoyable to watch, now if you don't have the time just do this when shooting raw: Select lossless compressed.

Gracias Cris! Por hacer ameno este tema tan técnico 🙏🏻🙏🏻🙏🏻

Man, that was a really interesting video. Thanks for the info.

Another very clear explanation with good examples. Thank you.

Just the video I was waiting for. Great work! 👍🏼

Oh, Chris, again such a very great video. I never used any other than lossless compressed in Nikon and Fuji, but I enjoyed your lesson so much again. Another look? No glasses and another haircut! Looks a littler strange at first minutes. Happy weekend. Uwe

One thing I considered was that if you use the Fuji only version of Capture One and you want to convert to DNG first using additional software you stuck because C1 for Fuji only won't edit DNG files.

Great info and so well explained as always! Thank you Chris.

I know this is an old video, but the purple fringing in the compressed image at 9:30 is probably because the light on the right is active in only that image!

Very clear, i switched to lossless compressed on my X100-V ;)

Fantastic video, sir. Especially with how different software treats the files.

Excellent video !! I always take my photos uncompressed, because I rarely fill my Sd card before having transferred my images to my computer. I must admit when I saw your video, I thought it was in 8k, well no, it was only an optical illusion after your beautiful haircut :-).

Thank you so much, this was exactly what i needed to know! 👍

Very helpful. Thank you for taking the time to do this .

You've covered so many important questions I've had.. thank you for your efforts, sir.

WOW... Thank you for all the work on testing... very helpful

Subscribing him is like attending school. Love your videos man.

Lossless is good 😁 I would like to see this with gfx100s

Thank you, thank you! You do the research well and you pick great topics. Keep it up.

Excellent video! thank you!

Great video, and still the only detailed comparison of the three versions of raw out there. Though, I'd disagree with the conclusion for Capture One users like me (given that the software is fully supported by Fujifilm). Keeping in mind that burst mode high speed fps is very limited with the big X-T5 files, compressed would be the best choice in the situation where you need to keep the speed up for 3-4 seconds to fully capture a developing action scene. Explaining to the client why the buffer lagged too soon is not a good excuse. Compressed will give you nearly twice the time/shots at full fps compared to lossless, and uncompressed is even slower. There is no good argument for uncompressed - if you're worried about legacy in the 23rd century, simply convert everything to DNG and build a time capsule. (But don't be so sure that DNG outlives RAF support... the future might be very different!)

at 6:45 you can clearly see that lossless compressed has much more details than Uncompressed(pre dng segment),you will also notice that after saving raws as dng's

R.I.P Michael Collins .. :( another amazing video thank you by the way

*Very informative and helpful. THANK YOU.*

Thanks Chris. When will you review the new Fuji 18mm? BR

Great enthusiasm and interesting facts! Thank you so much!

I guess the transfer/writing process depends also of the speed writing of th SD card, no ? If so, what was the speed writing of yor SD card ? Alos does the difference bewteen un.compressed is likely to affect the format and the cropped possibity of a printing photo, no ?

BRILLIANT - now breathe in !!!!

As always ... fantastic video !! Thanks so much

What about printing? Wil that be the same as well?

Great video again. One piece of additional information, for X-S10 users: lossy compressed files are still not recognized by ON1 RAW (Windows) including in the latest version released yesterday. Not sure about Mac versions and X-T4.

Very thorough, very helpful! Thanks!

Does it make a difference converting any version of the raw files to DNG for editing? Is the same data available, such as when a file is under/over-exposed?

Super clear as always! Thanks

I’m video guy so I have ton of fastest SD cards and never bothered about stills file sizes. But lossless compression seems legit. Interesting why “compressed” files has the only flaw in this video and also mostly identical with “lossless compressed” in file sizes, but Fuji sells it like feature of their flagship X-T4 camera

Thank you for all the samples provided. From what I understand the compressed RAWs can be less compatible with older software? - but the simple 50% space saving is a pretty convincing factor.

Hey, great video as always! I was wondering if you could do a tutorial on best ways to print photos. I'm thinking about a book style print that would be affordable and decent quality. I used to process images myself and miss seeing my pictures on paper. I know there are good photo printers out there ... Cheers!

Very interesting!! I always use 'lossless compressed' but didn't know the real difference. Thanks a lot Chris!

Has to be uncompressed all the way for me because Apple does not recognise compressed . Although I do zero editing in Apple Photos I do use it for all my ‘cataloguing . The cross device sync is outstanding as is also the iCloud storage . Apple photos actually makes a remarkably good job of reading Fuji raw files .

Glad I found this channel. Thanks.

thank you Chris !!

Great work!

Very good explanation. Canon’s lossy compression made a bigger difference in file size and buffering, still didn’t sacrifice image quality, that I noticed. Maybe Fuji could be a bit (no pun intended) more aggressive with lossy. Or maybe your test shots-full of color & detail-resist compression. It would be interesting to test file size differences on, for example, grey days, high key, low key, … scenes with low intrinsic dynamic range.

So thorough as usual 👍

Outstanding video! Big brother you should be sponsored by Fujifilm! 🎖🎖🎖🎖

Excellent analysis!

Firstly, I need to say that thank you for these kind of videos of yours to make people got informed; I saw your videos just a while ago and writing my first comment here. I actually was wondering what's the difference between that three options, in my previous one x-t20 (there were two though in that device) and currently my new x-e4. Indeed, i watched a video about it a couple of years ago but it wasn't as this detailed, honestly. So, your video is definitely clear to understand and really helpful. Did I thank you before? :) Stay safe!

Thank you very much....very lucid.

Essential stuff for Fuji owners!

A great, informative video. Thank you.

thanks for the effort and the sharing. i use an older X-T1 and there isn't even a compression choice! all good.

Great video Chris. I think compressed raw has lower number of bits per pixel. That might be the reason for the low file size.

I would like to see RAW files that capture the image *before* ISO is applied so I can do that in post-processing. You can demonstrate for yourself that FujiFilm has access to this data when you examine a set of shots from ISO bracketing. All the ISO bracket images are applied to a single exposed image and presented as the brackets photos. I want that picture from before applying ISO.

Great video! Keep up the good work

Nice demonstration, thanks

Nice prez thanks - I wonder how DxO Pure Raw would perform especially compared to Iridient?

Excellent video! These nuances are very important but probably will never affect us too much lol but good to know

Have you tried “Affinity” I use it to post process my X-T3 files. Compressed and non Compressed it works fine and is a lower cost alternative to Lightroom and Capture one

Did Irridient have issues with lossless RAW compression?

Excellent analysis!!!

Answers a lot of questions!

Thank God somebody did a video on this. Love m kerala 💕

Man oh man some deep deep research done here Chris ! I shoot raw uncompressed, don't know how or why I do that, but it seems I am on the right track. Storage doesn't really become much of an issue with the cost of storage these days. How do you find time to do this ? Completely understand now why you want to do this full time.