How to Correctly Expose S-Log3 with the Sony a7S III
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- เผยแพร่เมื่อ 4 ต.ค. 2024
- How to expose S-Log3 with the Sony a7S III correctly. Explained simply, with simple to follow steps. What is popularly known as the Wolfcrow System of exposing S-Log3 with the Sony a7S III.
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Underrated channel.
Wealth of information is astounding.
After many hours of researching and finding some helpful advice on other channels I stumbled across this video. In my opinion this is the best resource from a technical perspective and the author of the video is an excellent instructor. Even decided to buy your guides. If nothing else you saved me countless more hours of going down the TH-cam rabbit holes on SLOG3 and the Sony A7Siii.
Glad it was helpful!
COMMENTER: A7s III has dual ISO at 20 times the base ISO for every PP. SLOG3 = 12800. Many vids on it.
WOLFCROW: Nah that's just noise reduction.
COMMENTER: It happens in Raw recording, so it's not noise reduction. Many vids on it.
WOLFCROW: *silence*
*this comment gets upvoted
*this comment gets deleted
Good luck with RAW
@@wolfcrow take correction and move on
@@wolfcrow just tell him that he is correct, It's not hard. Makes you seem less like a arrogant snob.
@@wolfcrow wtf does that mean?
Comment didnt deleted, so wolfcrow isnt fake
wow! Maybe one of the best to exlpain for beginners. Creds to you for this great video!
Glad you enjoyed it!
@@wolfcrow Question. for 0.5~1 overexpose, does it apply to A6500 too?
05:46 wouldn't you recommend to jump to iso 12.800 instead of using iso 6400 or something like that, since the second native iso kicks in at that point? I often even use an ND Filter indoors, to get to the 12.800, so I don't have that ugly noise.
You are correct. When shooting in S-Log 3, 12,800 ISO will always be a better option that 6,400 ISO.
Yeah that was a headscratcher. I think he tested after hitting record. You only get the DUAL ISO by setting the iso before hitting record
If you start at 640. Then go up where do add filters and go and the when do u go to 12800, so im starting at 640 then go up to maybe 3200 then skip to 12800
That's what I always do as well I shoot with the FX3 and may be it's just me but when I use false colors sometimes I literally overexpose by 2 stops and I almost have no noise at all with perfect exposure
@@pzark3638 I'll say that 12,800 looks muddy even tho it is the next clean ISO base. Bare in mind that at 12,800, some detail is lost coz of the codec's automated DNR applied (even if you set it to low in the menu). IMO 12,800 is not ideal for really high quality footage, even though yes the image looks bright and clean but by then the DR is low compared to say, 640 ?
Really nice practical guide. I pretty much settled on the same settings after i tested. The Range of acceptable exposure on this cam is just absolute nuts considering its „only“ 10bit log
Most helpful S-Log 3 exposure video I've come across. Thank you!
I am new and just starting with videos...and have gone through so many tutorials and info. This is one of the best explanations for use of SLOG 3 on A7 S III and also a great tutorial on this camera in general. Thank you so much Sareesh.
Gotta say, you couldn't have made it any easier. Thanks!
Slog 3 is less flat to look at?
Are you suuuuure
Thank you for your reviews!
I really like your channel. It doesn't look like million of similar channels on TH-cam. Very structured information, very informative and understandable!
Also like your website. Good luck with the channel!
Don't shoot ISO 6400, bump it up to 12,800 instead and use an ND filter if needed. Your image will look better.
I'll say that 12,800 looks muddy even tho it is the next clean ISO base. Bare in mind that at 12,800, some detail is lost coz of the codec's automated DNR applied (even if you set it to low in the menu). IMO 12,800 is not ideal for really high quality footage, even though yes the image looks bright and clean but by then the DR is low compared to say, 640 ?
Thanks for the great information, could you make a video like this for the C70?
Brilliant video, so informative 👍🏽
Thank you Sareesh. As always, lots of useful info from beginning to the end of the video. I might be setting a custom Zebra just to check the skin tone.
You’re welcome!
I am unable to download the LUTs :(
I assume this will work the same for the Sony A1?
Great and to the point Suresh. But please explain why SLOG 3 should be overexposed by 0.5>1 stop ?
Hi! The a7S III has "a kind of" dual iso. In slog3 is 12800. Always 20 times the native iso of the gamma (i.e. 80-1600).
Digital noise reduction isn’t dual ISO.
@@wolfcrow I said "a kind of". I don't know for sure if has a second circuit. But also works in raw over hdmi, therefore, is not digital noise reduction.
It’s a second circuit. It has been tested ad nauseam by plenty of other reviewers. There also is noise reduction though, which hopefully will be defeatable in a firmware update.
@@wolfcrow its not noise reduction since the dual ISO kicks in while recording RAW, and you would know that NR etc are turned off in RAW recording.
@@wolfcrow Shoot in ProRes Raw. ISO 12800 has less noise.
Ok.so slog 3 is less flat to look at?
You sure about that?
you forgot to mention the 2nd base ISO which is at 12,800 -- whether it truly is a 2nd base ISO or not is a mystery, since Sony hasn't officially published it as such. But the image does clean up like crazy at 12,800. Thanks for this guide
The a7S III has digitally corrected noise. Real dual ISO cameras employ hardware circuitry for gain.
@@wolfcrow Only thing is that it also cleans up when you're shooting ProResRaw via the NinjaV, which wouldn't be consistent with internal noise reduction, since Raw by nature skips any debayering/ internal processing. It seems like there's something else going on there. Happy to share some Raw files with you if you wanna have a look
Thank you for this video! It was really helpful. Just a question, is this still applicable to Sony FX3 whose base iso is 800 not 640? Thank you!
Very informative, i shoot weddings with this camera. my question is do you know a way to best way to match the sony a 7iii with this setup?
Hello,
I would like to know
Is the Slog3 .S Gamut3.Ciné of Sony A7 III or A7 series and Sony A6400 the same?
will this be the same exposure for Sony a7iv camera also in SLog 3 profile
First of all, I love all your videos thank you for your knowledge. I use false colour on the ninja V using the same rules as described here and it works out really well. The image I'm getting out of the a7siii ninja combo is amazing. I live in DaVinci most of the time so it's sad that you cant use RAW without converting to 4444. You didn't mention the 12800 ISO clean up, is this something you use in low light? Lastly, your right channel audio drops at the very end of the video, yes I watch all your videos to the end haha :)
properly expose S-Log3 w/o an atomos' Luma scale?
Where can we see these photos and videos you took?
Thank you.
Do the Sony a7S III LUTS also work for other Sony cameras (a6500 for example). Love your tutorials.
Yes
Thankyou brother...😊
Hi! How are you?
- The new year has begun. I hope good things will be with you, of course. ^O^
I'm gonna shoot outdoor street scene just following the car and the only light would be street lamp. It looks ok in the camera (with rec709) but metering is about -0.7 to -0.3 and I cannot bring it up any more. Is that ok for the night scene like that? I'm after a darker look so I don't mind that. I'm just worried wether the image will look shit due to noise etc...
Thanks ,and wonder that,do you apply sharpness to Slog3 footage in post? Cause in slog3, it is -7 in default
Hi, I dont understand why you say 65-75 IRE for the face is correct exposure in the beginning of the Video, and later you say 30-50 IRE would be correct for your model?
This is great info but with the ISO if I have to shoot over 1600 I just go ahead and bump it to 12800 where the 2nd native is. In the non-log profiles the switch occurs at ISO2000, so again if I'm shooting CINE4 and I have to go over 800 I just go ahead and bump it to 2000.
I still don't understand the IRE? In our camera settings we can only set a certain IRE.. so which IRE should we choose?
For example what IRE should we use for landscape that has vibrant blue sky?
The Focus Spot Meter function doesn't work. I change the exposure or choose a different focus area but the value stays the same. Do I have to change some settings?
This was epic do more tutorials
What is your opinion on the ISO160 provided by Sony in a7siii? Is it exploitable? Can we use it and when?
Off topic question, but if anyone knows: At 0:51 sends in this video, we see a very nice, clean display on the camera. It is not like the other displays shown when going into menu settings. It shows limited settings, but: HOW do I get THAT display on my A7SIII camera??? Thanks...
Never mind, just figured it out: Press the Fn (function) button on the front to the camera!!!
Base ISO for slog3 on FX3 and A7S3 is 800/12.800 with the latest firmware update. External monitor should be used for monitoring. Slog3 must be overexposed by 2 stops without a blinking meter at any point of the imagine, when you move the camera arround. Exposing at 0.5 only like described in the video will create massive noise in your video, even when you record at base ISO. Go on and try it in 2023 if you don’t believe me.
Would the theory behind this transfer to the A7R3 as well? Looking to switch to a LOG workflow and haven't found many great videos like this one!
Thanks for the imformations.I wonder if in all the profiles of sony a7siii (s-cinetone, HLG, pp of.ppi ... etc) we have to expose to the right? If so how much?
Should 12’800 ISO be cleaner than 6400?
@@Dano-Media So this rule of thumb would likely change with the FX6 as you can turn noise reduction off?
@@Dano-Media From what I’ve seen it appears even with noise reduction turned off on the FX6, or in ProRes Raw, the noise still cleans up at 12800 ISO. I would love to see an in depth comparison between the a7S iii and FX6 - surprised no ones done that very thoroughly yet
How does the a7siii skintones compare to gh5? Are they accurate?
Is prores raw better than slog3?
Hi Sareesh Sudhakaran; best regards!
Do you have any setting to fix flicker on A7 S3 at 240fps? Thanks!
can i use XAVC-S and do the same?
The link to download the LUTs does not appear to be working, The download page comes up but the download link itself does nothing.
Wait so is it 65-75 IRE for faces or 30-50 IRE?
I think it is 65-75 for rec 709 which translates to 30-50 in slog-3. Someone correct me if I’m wrong
how to set that up to be automatic.... I do a lot fast shootings! not enough time to adjust the exposure between iso 640 to 12800
Should I use my exposure compensation wheel to +1.0-2.0 for slog3 in order to easily be overexposing? Or is that not a good recommended method for exposing in slog3??
Just a quick question. When you say Expose Slog3 by 0.5 to 1 stop over. That's over the Middle Gray = 41% recommendation. So then, the question: What does Middle Gray become with this slight overexposure of 0.5-1 stop? Maybe 45-50 IRE?
Yes
One stop over in Slog3 : 49-50 IRE.
if the image looks good with gamma assist is it ok ? or do i have to overexpose any way ?
when im used HLG i also need to overexposed ?
not. This explain is for Log curves. HLG is another thing.
There is a critical part left out of your explanation. At different ISO there are different dynamic range in highlight and different in shadows. With Canon, the higher the ISO, the more dynamic range in the highlights, and vice versa. Not sure how Sony works. It's never as straight forward as just shooting in a range between 640-6400
Most users of the a7S III won't be able to restrict their ISO to the native ISO. The range of 640-6400 is for those who want to match their shots later in post. The distribution of exposure latitude affects all cameras.
@@wolfcrow sure I guess you're trying to do one size fits all
Thank you!
thankyou.
The one in sary is soo pretty. I would love you meet.
Thank you for this amazing video
So for example if aperture is lowest (2.8 on my 12-24gm lens), shutter is 60 (30fps), and iso is 640 (recommended for a7siii), and the meter is showing 0 or negative number, which of the 3 above to I put higher to increase light? I don’t want to touch aperture, so should I up the iso? Not shutter speed? Or use the overexposed compensation wheel? Please help!
^( to get to 1.7-2 overexposure)
I dont actually know where else to ask this, so i hope someone could help me a bit. If im shooting SLOG3 with my Sony A7S3 and i have external monitor (Atomos Shinobi) with me and the monitor has the SLOG3 correction LUT in it and used that im going to use in the editing phase. I`ve been using A7S3 own monitor to show zebras on about 60 for skintones and Shinobi telling me when the IRE gets over 94. My actualy question is that how does the correction LUT and gamma assist actually work with these limits, am i actually exposing image badly if i have zebras at 94 with the correction LUT, is it actually showing me the real clipping point because of the correction LUT and if not, should i have the zebras match the REC709 that the correction LUT aims for? Same question about the gamma assist in the camera, can i trust in the zebras with that mode on as i would trust them without it? This is hard to explain, but i hope someone understands and could tell me the best workflow to tackle this problem. I would love to have the zebras show in the cameras monitor for the skin tones and the highlight clipping in the monitor or other way around, but what IRE should i aim for depending on the correction LUT or Gamma assist? Can i actually use correction LUT on the monitor when exposing by the SLOG3 rules?
activating or deactivating a out on the shinobi doesn't affect the shinobis waveform. so trust that. your idea with about 60 for skin tones on cam and 94 for clipping on the shinobi is very clever.
are zebras supposed to show on a face or not? half of the videos i watch they say if u see zebras go one stop back, others say that zebras should cover the face. zebras are supposed to show when something is over the limit of the value u have set, for example 65 for skin. so when they appear it means thats higher than 65 and u should go one stop back. no?
Over expose by 1.7 stops for SLOG3
Get a life, 1.7 stop is for 8 bit old sony camera
Will this work on my a7iii?
No
@@wolfcrow everithing except the iso values can work with every slog 3 gamma curve. the slog 3 is the same gamma curve for all sony products. the difference between sony mirrorless and cinema cameras is the record codec and color bit depth.
Could you do this for panasonic s cameras for full v log?!
same thing for any Log curve of any developer look for the official log curve chart.
Do you need an external monitor to record in s-log 2 or 3?
No. Simply having the camera is doable.
1) I highly recommend not to go over ISO 3200 as it gets bloody noisy. 2) I recommend overexposing more than 1 stop. Up to 2 stops. If you are not sure, better overexpose a tad more rather than exposing too low (which is a killer for slog).
Sorry, I read that those setting should be fine for A73, I read you can expose normally with slog3 in A7S3 or FX3.. Someone knows if there is a difference?
@@borromini_music Just because of nature of Slog curve you never exspose it "normally". I know they say you don't have to overexpose slog3 on A7s3 as much as you did with A7s2 but still to me 1 stop over is too little. I feel safe with 4/3-2 stops over.
This probably works with sony fx6? it would be awesome if you made a sony fx6 video too
Slog 3 is Slog 3 regardless of the camera
@@galocascio Yes you are right. But I meant those ire values, 10-94. different cells have different clipping values, even if the gamma curve is the same.
@@jan-peterbrask9441 Not necessary. For gama curves of sony Slog 3 always clips on highlights in any sony camera in 94 ire by otherway slog 2 curve clip at 107 ire.
@@galocascio Okay, thank you. this was new information for me. The fx6 is the first Sony camera I own, so I’m still missing out on basic things with this one.
@wolfcrow (or anyone else who knows), are there any important differences we should know about if we're shooting S-Log3 on the Sony a7 III (_no 'S'_) ? Thanks for the extremely helpful video!
Yes the a7iii isn't 10bit and isnt great for log. Don't bother.
@@morganm3362 For real? Aw man. Same with the crop sensor bodies then too I guess?
@@CamsCampbell correct. It's doable with all of them but use slog2 not 3 and if you're not comfortable absolutely nailing your exposure and white balance it's not worth it. Look up whoismatt picture profile
Does this apply to the fx6 aswell since they share the same sensor?
If it did, then yes.
That Gamma Assist tip was "money."
I'm curious to know why SLOG 3 has all of a sudden become so popular?
lut venice?
lens?
cine cammut preview assistant WHAT?
2021 Sony A7S III slog 3 in 1080, really?
really what?
I don't know why but even before I watched any technical videos and understood any technicalities, I always prefer to expose all of my videos at + 0.7. May be because I like number 7 🙂. I would keep the video details in mind when I expose my a7Siii from now on.
never heard the term IRE before, thats pretty much useless information
Newsflash everyone slog 3 is officially not as flat as slog 2. Just because he says so
🤣🤣🤣yeahhh
I like the model. She looks very feminine. Soft to the touch, I believe so.