The Most Important Thing About A7IV That No One Talks About | How To Expose A7IV SLOG3

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#A7IV #Slog3 #A7SIII
In today’s video, we are going to show you one thing that no one mentioned but noticed, the reason why you should not overexpose for Slog3 for the Sony A7IV, because the dynamic range of the A7IV makes the highlights clipping much lower than other Sony cameras like the Sony A7SIII. We will should you how we found out and the test results we found so you know how to properly expose for Slog3 on the Sony A7IV for your next project. Thank you so much for watching!
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Опубликовано:

7 сен 2024

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Комментарии : 50

@RandumbTech Год назад

I've watched a bazillion videos on SLOG3 exposure and THIS is the one that has helped me the most. Thank you!! All the videos say the lower limit Zebra should be set to 94+ to retain highlights. It's been so frustrating to get the footage home and realize I've overexposed my footage and if there is a sky involved, forget about recovering any detail in it. Now that I'm using 85+ (or 50 +/- 2 for skin tones) and shooting at native ISO only, I'm nailing exposure every time. What was so frustrating is that I was using the same technique with my FX3 and getting great results. After your explanation of the difference between the two, it makes perfect sense. New sub here - and thank you again!!

@henrymediagroup Год назад

You are very welcome! I'm happy that the video helped!

@LucasJohnsonFaustino 2 года назад

I've been using the Sony A7iv since December and I haven't seen any of these issues. I'm still exposing over and my highlights aren't clipping in S-Log 3, zebras set to 95% and had no issues. I think you may have misread your graphs as has been mentioned by some other creatives here unfortunately!

@NigGarvey 7 месяцев назад

This is the best advice out there, since watching this I did a test at 90 (as others tell you!) and at 83 mid between 80 and 85.... OMG night and day the 83 is so much better and so much less clipping (actually None I could see in Premier Pro! THANK YOU

@henrymediagroup 7 месяцев назад

I'm happy that you found the video helpful! Thank you so much for supporting the video!

@f0t0b0y 2 года назад

Thank you so much for this. I’ve switched from shooting canon for 20 years(hybrid shooter). I was following the shoot native +1.7 and the footage was garbage to grade. I watched another video that said shoot +.7. It’s been all good from there. 👏🏼🙌🏼

@henrymediagroup 2 года назад

You are very welcome! I’m happy that the video helped! Good luck filming!

@FUTUREINFINITYWORLD Год назад

Yea this is the way to go +7

@f0t0b0y Год назад

@@FUTUREINFINITYWORLD Nope. The way to go was switching back to Canon. The colors in mixed lighting(where I shoot 40% of my jobs) is absolutely garbage. If you shoot sony you need to get a master in color grading. That system added so much backend work. Pulled the trigger on the Canon R5C and C70. Color is restored.

@mikomo-5530 Год назад

Cool! But I didn't understand how to shoot in slog3. In bright sun? when I take a picture of my face. Exposure 1.7, zeba 75?

@videoworkshopvolunteers 2 года назад

I use Sony a7iv and the Leeming Lut for Sony a7siii at zebra 94+ custom setting 2 and had this same clipping problem with highlights. I tried your advice to lower zebras to 70, and I also used the Sony Slog 3 to Rec 709 camera lut in Final Cut instead of the Leeming lut. I still use zebras to reduce highlights on faces and bright whites. I got much better highlight control with less clipping. Thanks.

@electronale Год назад

Thank you so much! I was using zebras in 94 as others recommended and not having good results. Thank you so much!

@suvirnaths849 2 года назад

Wow.. extremely useful info.... kudos to you... this video deserves more notice... had my zebras set for 90.... dropping it down to 85 right away... cheers...

@henrymediagroup 2 года назад

Thank you so much for your kind words and support on the video! I’m glad that you found the video helpful! We hope that our audiences will help sharing the video so more people can get to know more about the Sony A7IV!

@Gloomwithaview Год назад

you're going to loose dynamic range. I think Henry has gotten IRE and zebra percentage mixed up. Slog3 clips at 95% which is 85 IRE. Different IRE levels depending on subject matter. I use 95% usually best for overall dynamic scenes with no human subject. Always able to pull back sky details if i set zebras @94% just before zebras clip. IRE levels for best for Skin tones range between 45-75.

@WalkDK Месяц назад

@@Gloomwithaviewwhat is IRE?

@rexplorer.official 2 года назад

I tested yesterday zebras at 94 and I got details from the highlights in the sky after bringing highlights down.

@JamesWilliams-in3py 2 года назад

Great video, I understood it even skimming through it cause I didn't have time haha. In the future for these long videos I recommend putting the chapter markers so people can choose the info they want to watch :) Usually don't have time to watch such long videos and just want the summary :D

@henrymediagroup 2 года назад

Thank you so much for your kind words and suggestions! We really appreciate it!

@JohnTalksAi 2 года назад

the color grading on your videos are nice! hopefully you can do a color grading tutorial soon? would appreciate that and find a ton of value from that! thanks man keep spreading the knowledge

@henrymediagroup 2 года назад

Thank you so much for your kind words and support! It means a lot to us! We will definitely try to do a color grading tutorial video, stay tuned!

@rickyissak565 2 года назад

Respectfully, I think you read your scopes wrong. The scale on your NLE’s waveform is set at SDR luminance level, which is presumably set at 85 being the highest brightness level. That scope is a representation of how your display is displaying the image, not how your image was recorded in the first place. That’s why you think different NLE clips slog3 at different levels. They should always behave the same way. It’s just scale settings for your waveform can be different for each NLE. Another giveaway is the fact that your waveform looks way too stretched for slog3, which should be a lot more flatter. So LSS, there’s nothing wrong with a7iv’s slog3 compared to a7siii.

@henrymediagroup 2 года назад

Thank you so much for sharing your experience and knowledge! We left both our camera and NLEs at its default settings and the highlights are always clipping at around 85 to 89 IRE, which matches with the result of the dynamic range test from CineD. We will do more testing to see if we can get a different result. By the way, the reason why the waveform was stretched is because of the recorded phone screen at the bottom left corner and also the environment had very dark shadows and very bright highlights. In normal scenes the SLOG3 waveform is usually more flat.

@rickyissak565 2 года назад

@@henrymediagroup basically, when we say “set your zebra at 95”, we actually mean 95%, not 95 IRE. Those are two completely different units. Slog3 always clips at 95%, and that point translates to 85 or so IRE. You should always set your zebra at 95% for a correct reference point of clipping information, then when grading, you can put your clipping point at 100 IRE or even 1000IRE for HDR work. By setting you zebra at 85% you’re basically wasting your dynamic range.

@sstteevveenn77 2 года назад

@@rickyissak565 Wow I did not know this, now im more confused lol. Please help The zebra settings on my a7siii have several options: You can select from 70-100 Plus and then at the bottom you have Custom Zebra settings. When I check the info for the 70-100 it says "Stripes appear in the area with a brightness of ____ IRE or higher". On the other hand the custom zebra settings doesn't mention IRE. Are you saying the Custom Zebra settings aren't representing IRE? I ask because literally every youtube vid I've seen metions IRE even when talking about the Custom Zebra options. Considering you made the distinction between percent and IRE I guess my main question is, what unit is being represented in the Sony zebra menu? Is it IRE or is it Percent?

@rickyissak565 2 года назад

@@sstteevveenn77 it must be percentage. Google slog3 data sheet, in which the second to last table gives you key values in slog3 in percentage, which corresponds with how much you want to set your zebra.

@YulaTsheringSherpa 2 года назад

Thank you for taking time to write this comment,

@WinstonWheelington 2 года назад

This is an amazing video. Have you tested higher iso values above 3200 to find an 'acceptable' next range? For example 6400 may be better/cleaner than 5000?

@henrymediagroup 2 года назад

Thank you so much for your kind words and suggestion! We will try to make another video about higher ISO level on the Sony A7IV.

@SHOTBYLEWWUTITDEW Год назад

This would be a dope video if someone does it

@petertam163 Год назад

Thank guy!

@henrymediagroup Год назад

You are welcome!

@Niklondon 11 месяцев назад

Man your colour grade is incredible in the beginning shots, could you let me know how you graded this please, luts, etc… very filmic 👍🏽

@notnikola 4 месяца назад

Found that out the hard way too.

@alekseydomino 2 года назад

I believe u have an auto knee problem... Set your knee to Manual, Point to 105% and Slope to +5 and try this test again...😉

@TaoCovillault Год назад

Doesn't seem to change for me... It clips exactly at 87+ and that represent 87 IRE in FCP

@johndc7446 Год назад

Were you using the 10bit or 8bit for the Slog3? Also in Davinci Resolve there is a waveform feature called show extents. This will show some of the datas that are clipping that the regular waveform usually doesnt show to the user. If you turn it on in davinci resolve it might show that some of the highlight details have clipped already even if the waveform seems to not clip yet.

@pritampramanick7012 2 года назад

Really this is an extremely valuable and informative video regarding sony a7 IV... Your video will definitely save my upcoming projects as I own it one. One question I have from you that should I maintain same IRE value (max 80/85 IRE for slog 3 at native iso) when I use 1080p slog 3 at base native iso. To maintain that should I just select the zebra value to 80 or 85 or different for 1080p???

@henrymediagroup 2 года назад

Thank you so much for your kind words and support on the video! So far the highlights are clipping at similar level around 85IRE for both 1080P and 4K recording on the Sony A7IV in SLOG3 at the native ISO levels. Hope it helps!

@pritampramanick7012 2 года назад

Thank you very much sir...

@alimustafah8264 Год назад

The question is why did Sony choose to do that? Many times I thought about selling my a7IV and finally this video explained that. My god, I have a Nikon z50 and it crushed the Sony a7IV in low light! I kept comparing their footage for weeks and was always wondering why is this happening... The highlights are easily crushed every time I shoot anything, then I discovered the z50 a DX body, has a way more pleasing image in highlights and shadows smh!!!

@larrymawile 2 года назад

amazing video, I'm getting one soon!! how does the a74 filming highest quality on overheating? i've seen a lot of people says overheating is a problem but some people tell its okay, unless if you shoot high temp outdoor

@robertoarosio5495 Год назад

Very informative and interesting! And if s-cinetone is used on a7IV, at which value you have to put your zebras to protect the highlights, given the case you are able to film everything with the two base ISO 125 and 500? Thanks!

@TaoCovillault Год назад

In my testing I see that the clipping is happenning around 109 IRE, so i would say 105 and 65 for the skin ;)

@WalkDK Месяц назад

I thought the native ISO was 640. Or is that for slog3 only?

@SimeonKolev 2 года назад

This is strange :) by specs the SLOG3 must clip whites at 94+ with the incamera zebra. This is Sony spec for the SLOG3 if you expose with the ETTR method. I do not have any experience with the A7IV so far but when I tested the A1 it was exactly like my A7III and A7rIII. PS is it possible that this is a bug and the gamma assist makes the zebra meter wrong?

@zolwikwkurwik Год назад

I did test my A7IV today and clipping starts at 94 zebras in camera (checked when clipping start using monitor+ app) . I'm on the latest 1.11 firmware. Maybe they changed something in the recent updates?

@zolwikwkurwik Год назад

I did test my A7IV today and I have totally different results. I'm clipping on 94 zebras in camera, not 86. I'm on the latest 1.11 firmware. I did use the monitor+ app to see when the clipping is happening. Can you please check this again with the latest firmware?

@TaoCovillault Год назад

That's curious, I definitely have a clipping at 87, it's clear on histogram, on monitor+ and on Final Cut 🤔 I'm super confused now, because few comments above you also says it... Would it be 2 different series of A7IV ?...