Freezing Motion with Flash | Ask David Bergman

Рет қаралды 19,871

Күн бұрын

Today's question from John H. is, "I recently did a band shoot in a studio. In a few shots, the band members jumped. In almost every shot, one or more of the subjects were not frozen. I was shooting at 1/125, F11, and ISO 100. Any idea what happened? Was my shutter speed too slow?"
Go to www.AskDavidBergman.com to submit your own photo question, see David's gear list, and view the episode archive.
00:00 Intro
00:45 Shutter speed to freeze motion
05:00 High-speed sync
06:03 Freezing motion with flash
08:19 How long is flash duration
10:29 Flash duration with more flash power
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✘ PRODUCTS USED:
Canon EOS R5 Mirrorless Digital Camera Body
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Canon RF 24-70mm f/2.8 L IS USM Lens
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Canon Speedlite 600EX II-RT Shoe Mount Flash
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Canon Speedlite Transmitter ST-E3-RT
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Glow EZ Lock 24x36" Quick Rectangle Softbox With Bowens Mount www.adorama.com/glsbez2436.ht...
Glow S-type Bowens Mount Bracket for Speedlites and Flash www.adorama.com/glbdsm02.html...
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Flashpoint XPLOR Power 1200 Pro R2 TTL Flash and Pack Kit www.adorama.com/fplfx1200khb....
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Пікірлер: 32

@silverdoggg Жыл бұрын

10 years shooting and STILL learning new things, Thank you

@GiannisVeronis Жыл бұрын

David this is the On Field Hands on Exprerience that I was missing from your tutorials. Your sea of knowledge really shines here

@johnhancock2243 Жыл бұрын

David thank you for answering my question. To clarify I was using strobes in studio. I was at full power so I think that was the problem It totally makes sense that the flash duration acts like the shutter speed. That is what i was doing wrong. Thank you

@alitchfi 6 ай бұрын

Great teacher!!

@BunnyHop12 8 ай бұрын

Wow this video is insanely helpful. Thank you for sharing 😊❤

@AnthonyBonillaPR Жыл бұрын

Thanks for the great tutorial. 👍🏼

@kevinl1492 Жыл бұрын

Great video. I vaguely knew how this works but this was very helpful. Your explanation of how the electronic shutter works was also more complete than what I have seen before. Suggestion: it might have been helpful to mention RC flash sync speeds.

@D.E.Middleton Жыл бұрын

Great content.

@alonzohollingsworth7712 Жыл бұрын

Great video demonstration. You've provided me a better understanding on this subject. That Flash Point Explorer is a beast of flash and most likely at a Hulk of a price. Nevertheless the video gives me a good perspective of what my limits are when using my speed lights. As always thanks a lot for sharing.

@dance2jam 5 ай бұрын

David, late to this party, but just starting my adventure with strobes (relatively new amateur photographer) - and I must say, your videos are always super informative and to the point covering essential information. I've had a flash in hand for 2 weeks to give you some idea, but already am using it for many things including rear curtain sync ghosting of movement (thanks Seth M) etc. Here's my question for you (if you get back here): Going up from a speedlite to 1200 Watt seconds is an expensive venture. So, if I was interested in photographing moving/rotational dancers in a controlled environment (i.e. studio), all things being equal (I know they rarely are), would it be more advantageous to purchase a more powerful strobe (i.e. 1200ws) vs 2 600ws strobes used at low power - but also giving you the ability to light different sides (i.e. left/right). Thank you in advance.

@thearabicdp Жыл бұрын

This was great. Thanks for the info

@cherylnetti7268 Жыл бұрын

Great video!

@uaebifvideo5472 Жыл бұрын

Thank you for the information!!

@tedk2814 Жыл бұрын

Wow, when I first saw Lizzie, she looks so much like my granddaughter , thanks to her for making this video possible. Being a sport photographer and when researching strobes used in gyms for basketball, I learned that some of these older powerful strobes get shorter flash duration as the power is increased, unlike most of the newer ones like I use, Flashpoint ( Godox ) is just the opposite. When I mean older strobes, I mean the ones I could afford at the time and they were old. I never ended up trying the strobes in gyms, as usually not needed in most gyms, just dial up the iso and go. Thanks David and Adorama.

@brad_in_yyc Жыл бұрын

What if you opened up your aperture from F11 to, say, F5.6? That should enable John to also reduce his flash power, right? However, that will also change your depth of field. And if John wanted to keep his depth of field where it was, this was definitely the way to go. Would using a speed light tree with the speed lights all turned down to, say, 1/64 power but having 3 or 4 of them to approx. equal the amount or light that you had work?

@DavidBergmanPhoto Жыл бұрын

Yes - a wider aperture would have helped. Also yes - multiple speedlites with lower power would help too. However, remember that you only get one more stop of light every time you double your number of flashes. So there is a point of diminishing returns. 1 to 2 lights is 1 stop. 4 lights is 2 stops. 8 lights is 3 stops, etc....

@thearabicdp Жыл бұрын

Or increase the iso if you don't mind some noise

@daveh8679 Жыл бұрын

Great explanation as always! Finally understand the importance of flash duration, thanks 👍 One question, I saw you swapped triggers without turning off camera. Is it best practice to switch off camera when attaching to the hot shoe?

@pattymattes7124 Жыл бұрын

I have discovered that more watts on a flash doesn't always equate to a short flash duration. I have a 500 watt monolight/strobe and a 250 watt. I had more success with the 250 watt. So more power doesn't always mean a short flash duration and it depends on the flash as you indicated. I think Mark Wallace touched on that with a video he did quite a while ago if I remember correctly. Thanks for another great video!!!

@Lucy-dk5cz Жыл бұрын

Depends if strobe is IGBT or voltage regulated

@bhalchandrasukhi5415 Жыл бұрын

@nmelcam1 Жыл бұрын

Actually for most of the part more power does equate to short duration. If you have two strobes of the same make and series, but one is 500watts and the other is 250watts, when you use the 250watts one it will be at full power and recycle time and flash duration will both be longer than the 500 watts one at 250 watts as it is working at half power. The same goes all through the power cycle. the 250 watts light at 1/4 power would be equivalent to the 500watts at 1/8th power. If you look at the manual (or if the light has the option to display flash duration on it's screen. you will notice that the 250 watts at 1/4 power lights flash duration is higher than the 500 watts light at 1/8th power. An example would be my Godox AD200Pro vs my Godox AD400Pro, the 200Pro at full power (200watts) would have a flash duration of 1/220th of a second while the Godox 400Pro at 1/2 Power (200 watts) would have a flash duration of 1/790th of a second, that's a huge difference and the same goes when you use equivalent power setting in both. Hope this helps explain a bit 🙂

@stevejurkovic1851 Жыл бұрын

I've really only considered the difference between ambient and flash when shooting motion (I photograph a lot of roller derby and almost always am using multiple flashes). I thought keeping 2-3 stops difference between ambient and flash was sufficient to freeze motion, though flash duration can contribute.

@glennskinner9564 10 күн бұрын

Could have gone to F8 Still capture focus but the set mbe to 1/16th?

@garymc8956 Жыл бұрын

Manual vs electronic shutter on my D850 (live view); Z7ii (silent); banding, other issues?

@kritisupriyadas3424 Жыл бұрын

what if we had used 2nd curtain flash instead ?

@DavidBergmanPhoto Жыл бұрын

Doesn’t change the freezing of motion.

@250GTOAJ Жыл бұрын

😎👍🇨🇦

@johnnyc.5979 Жыл бұрын

This wasn't confusing at all.

@RusiruRupasinghe Жыл бұрын

Pay more attention to the audio too.

@billymckee01 Жыл бұрын

Even though HSS would not have been powerful enough - you should have gone through it anyway to show how it works, You need to do an electronic shutter seesion later using this scenario as well. Otherwise good explanation of the issues.

@annarakannan6620 Жыл бұрын

No one shoots at 32000 iso. At least most cameras normal people carry are incapable. I know you are using a4G camera. So this exercise is not intuitive. Can you do this with a Fuji x100v at lower iso and basic flash? Not what the pros use.