How To Expose SLOG2 Properly - Plus How I Colour My Channel Footage
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- Опубліковано 4 сер 2024
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After I made my video about how to expose SLOG3 some of you asked if there would be one for exposing SLOG2, so here it is!
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With so much focus and opinion out there on slog3, it's refreshing to see someone teaching the benefit of alternative options. instead of just providing an opinion you provide a solution. Thanks for keeping it simple, it's the reason I keep coming back Harv. Keep up the great work, I'm learning a lot!
Finally the one I've been waiting for. Thanks Harv!
Super informative, generous of you take the time and share. Thank you.
Your videos are so interesting and packed with information! Good job.
I was like "neat details on the log shadows". I now realized the pun! (either intended or not)
Great ! I've had issues with noise in low lights filming a little bit underexposed in S-LOG 2 and I'm gonna try your method today and I'm sure You'll be kinda hero of the day for me !! Cheers from France, keep going !
Subscribed... such a great UA-camr....truly appreciate your willingness to help others about tech stuff
Just what I wanted! Thanks mate!
Thanks so much for posting this Harv! Love love love. Have you used color finale? If so, your thoughts?
Great tutorial! 😊
Hey Harv! Great stuff here! I had a quick clarification (disclaimer: quite the newbie at this gamma coloring stuff). So for exposing to the right, there are essentially 3 ways to do it: increasing aperture, slowing shutter speed, and increasing ISO (as a last resort). Am I getting that right? Also, how does exposure compensation come into play in all this?
Really useful. Thanks Harv. :-)
As a newbie to the A7Sii this video has been a great help, thanks for sharing :)
Thanks for the video.
Also, great to see a fellow Sony user use Final Cut Pro X for editing.
Footage looks great, keep up the great work!
Harv, what editing software did you use for this tutorial? FCPX? Thx!
This isn't the video I deserve, but the one I need right now... Thank you
How do you overcome the high iso when using Slog 2? Do you just use a higher F stop? I've always used Cine 2 or 4 for night and day shots cause I can lower my iso to 100 to get less noise.
Great video! It will help a lot for my channel, thanks :)
Apart from overexposing, do you reduce saturation and details in the profile?
What program are you using to color correct - I didn't recognized it.
Harv, I've never seen you discuss using s-log with the gamma display assist feature. Would you make a video on that? Can't find many UA-cam videos on it
Why do use the s-curve plugin and then turn it off? What is the s-curve anyways? Thank you for making this, I always learn something new.
My guess is that it relates to the "S-curve" as when you adjust the curves to S-like shape to get some contrast to your lut footage. Here it seems to do the same but instead of manual control over the curve, it's just slider.
It seems that just the initial S curve helps harv with the modifications he does after
Hey Harv, what colour space do you use with S-log2 or Cine4?
Great tut on slog and the management of the. Thanks for taking the time. I'm trying to move forward with my a7s2 after Canon failed so badly on the 5dIV for video. Cheers!
+TradewindsHD much appreciated :) I had high hopes for the 5d4 as well. Fingers crossed the c100mk3 is a belter!
What is the S curve you apply - is it native in FCPX or is it a plug-in?
Can I please ask how can I understand the out applied for slog2 to rec 709 is color or not? I want to learn to be able to distinguish truly why some say when the footage shaven't been processed / interpreted properly.
E.g I'm using sony a7sii and atomos ninja blade, slog2 from both side and I wonder if the footages should look the same or there should be color differences? I downloaded the slog2 to rec709 lut and apply on the one from my ninja blade and they are still having different readings and colors, I hope you can help me out a bit here, I'm kinda lost.
Many thanks
Hi Harv, nice video as always. Have you seen the 1 hour wolfcrow video about S-Log2? I'm sure you have but worth a watch if not. Do you think there is a difference between S-Log2 between cameras models? What could be +2 for the 7s could be +3 for the 7r...
Hello. I shoot in Slog2 and I also use the mLUT in fcpx. And I just apply a suitable LUT from the "Utility LOG to Rec709" folder. My question is, is it really necessary to apply the "Slog2 to Rec709" LUT only if I shoot in Slog2 ? Thank you
Hi, I would like to ask you, what is your best auto focus settings for Sony A7S, when you have your camera on gimbal (like DJI Ronin). Especially, when I am shooting a moving object.
Thank you
You know, what I noticed is the dogs' tails. Without Slog the highlights would probably blow out the shadows. Looks really good. What are you using for posting?
I'm completely clueless about all this especially this SLOG stuff. What kind of software package does one need to do this color grading? I'm thinking about getting the a7s II or possibly a7s III that apparently might be announced within days. Thanks, and you do great videos btw!
Great Video :-) Where do you get your free LUTS from ?
Are you shooting with a neutral density filter? ISO 1600 seems a little high for daylight, even if it is overcast.
Hey Harv! All of your videos have been awesome and helpful to me and my filmsmaking. Thank you. I'm using a Sony fS700. I use SLog2. How can I get better pictures from that camera and use phantom luts as well? Thank you for your help.
I shot with slog2 for the first time a while ago and was not completely satisfied with the results, some of the scenes where shot in low light so I got some noise in my shots (I think I under-exposed, live and learn) but next time I use it I'll learn more about how to use the histogram and use it :)
Question! What is your second favorite PP besides Slog2? I've seen a lot of people using Cine2 with similar looking results as in Slog2. And if you could answer why that PP, and how do you expose it correctly (since Slog2 needs to be over exposed)
Thanks! You're channel is the best, been so helpful for me
Hi! i have been trying to use all of these tips for quite a while now, but the problem is two stops above to my naked eye doesnt yet hit 107 zebras.... so i dont know which to trust more; bump it up to 107 zebras and then just down until there is no clipping (and make sure my metre is all in the midtones and above), or to use my eye on the screen of what i see. im really worried ive been over exposing my footage (although i make it so theres no zebras - but only just). 4K, FS5. TIPS?!??!!! Thanks!
But when i dial up my exposure so much, it will clip the highlights? But i want to save shadow. :/
I don't understand why on a Sony A7iii I seem to be only select a minimum of ISO800. Is that correct and anyone know why that is? Seems to limit exposure options, especially when trying to shoot with wide aperture.
Great video Harv!
Are you using your modified version of EOSHD Pro Color exclusively from now on when using your A7SII ?
+David L'Abbée many thanks, most of the time yes :)
I have been using Premiere for grading Slog2 footage shot on my A7M3. I have been running into recurring color posterizing especially when bringing in saturation into skin tones. Basically looks like patchy colors and grays. I have been using sony's default Picture profile 7 as suggested by many shooters (its basically Slog2 with no adjustments to saturation, phase, knee etc.) Some users say to use a pure 32bit editor such as Davinci resolve, FPX or After Effects. However, I 've only tried AE and Premiere, both with no real resoultion to this. Others point to the limitations of 8bit 4:2:0. But I'm surprised at the real lack of smooth skin tones, almost unusable. (I have indeed been shooting overexposed to the right about 2 stops) Any ideas?
I had this same problem! You can make 1 adjustment to your Picture Profile 7 settings to help fix this. Within PP7, increase the saturation from 0 to around 24-32. Increasing the in-camera saturation will help reduce those blotchy colors and make for an easier color grade. Keep in mind that if you add a LUT over this modified s-log2 footage, you may need to dial back the saturation in post.
Where do you get the SCurve? thank you!
I see in your video you are dragging and dropping curve effects and other effects. Are those just saved presets or some installed effects? Looks like a real time saver either way.
How exactly you over exposed and monitor the footage? Everyone tell the same thing. But how? Increase the exposure com? zebraline set to 120? gamma display assist on?
Nice video
what software did you use?
SLOG2 is also available on 7R2 (no SLOG3)
I'm on the fence between them.
Hearing and seeing your exposure and color correction, I agree SLOG2 seems more forgiving.
Why would you (or not) recommend the 7s2 over 7r2?
I'm 80/20 video vs stills producer.
P.S. just subscribed today. I like your insight into these processes. Thank you and keep up the good work.
I shoot outdoors in slog2 and indoors with slog3 now. I'm also experimenting with cine2 and other picture profiles.
hi mate,,, great video again ,,, iv recently brought the sony rx 100 v and i wont to get the best out of my videos so im shooting in slog2 ,, my question is how to expose the correct amount ? is it just by using the histogram and eye balling it ? should i keep the histogram over to the right ?? any help would be great ,, thank you
+mat matwom hi mat, I've never used the rx100v but the principle should be the same. Ignore what your meter says and as you said, eyeball your histogram. Keep your exposure somewhere between the middle and the right and you should be ok, just keep and eye on you highlights :) many thanks
Harv! Would you suggest keeping the ISO at 1600 when shooting SLog 2? The minimum ISO for the a6500 is 800 for SLog 2, so I was curious if keeping it at 800 while exposing 2 stops over would help get rid of noise.
I'd always try to keep it at base ISO when shooting in any LOG mode, that way you get the max dynamic range. Base ISO and over exposing a little should help with any noise :)
okay cool, that makes perfect sense. Keep up the awesome videos. Thanks!
Great video and I love the music bed! Where can I download it? Thanks a lot!
+uniqueditor hmm nowhere really I used to write stock music and that's what I use for these vids. Many thanks :)
@3:52-3:56 You mention the highlights can't really go higher; how do you know your exposure/level limits for highlights, midtones and shadows when reading a Histogram? I've been using the metering system in the bottom middle of the camera for the past year but after watching your videos I'm looking to make a more accurate switch to using the Histogram when shooting slog2. What should I be looking for when reading the Histogram to nail proper exposure/overexposure when dealing with slog2? Thanks!
+F. Jacob Alvarado I would keep an eye on your shadows on your histogram, as long as they're not below say 30% you should be ok :)
If shadows were below 30%, then basically I'd be losing detail information, is that correct?
Information like your comment is something I would never know to do unless you had commented.
Do you have a link to a video that taught you how to read the histogram or any other Histogram shooting tips?
Thank you for the reply! Just stumbled upon your channel and can definitely say it has been a great tool for further learning the a7s2. Keep uploading!
I still don't understand how to expose it. I have a7s mk I and minimal ISO for S-log2 is 3200. As you said, I should overexpose it 2 stops, it means I should add more ISO? And then BOOM magic will happen? I just wanna see it all steps on regular camera screen without those fancy metering modes, cos I don't have any external monitor or Atomos stuff.
+1
did you watch wolfcrow''s video on the topic? he covered a7s in 2015 specifically. and you don't need monitor for it.
So did you overexpose (or rather expose to the right) by 1.5 or two stops to get an "accurate" exposure?
+Clintamis not sure what you mean by an accurate exposure?
What about the cine4 gamma? Should I overexposure same as slog2 or should I exposure normally ? Love your videos!
+Renato Duarte thanks :) you shouldn't need to for cine4, I'd protect those highlights
Today when I was going for a walk in a forest near where I live, I just tried to capture videos in Cine 2 and Slog 2 for the sake of having a comparison on my own.
What I noticed was: It is much easier to work with Cine2, while Slog 2 gave me really nice results in terms of highlights and balance between shadow/highlight areas. The editing was indeed kind of a gamble, you need a more precise and advanced software to really bring out its maximum. I did it in iMovie (which is really sufficient for Cine profiles and light editing), and while it was possible, you would surely want more control over the amount of, let's say, contrast that you add, not just a slider without any values that covers 5 parameters in one.
The results .. well, I actually liked the results with Slog more, however I am not really sure about how far I have to go to the right in order to not end up with a too dark/flat/greyish image. I have been somewhere between +0,7 and +1,7 EV and what I felt like was that it is beneficial to rather do 1-2 steps more of exposure (around +1,3).
Could you pls show how to set your exposure?
Many ppl use zebras etc. Show us your workflow pls.
Hi quick question, do you tweak the setting on SLOG-2 with EOSHD settings, or is it better to let it be default SLOG-2 settings? Thank you :)
+JodyHongFilms that's what I did, really liked the results:)
Which one you did? o.O
Default setting / Tweak with EOSHD setting to get canon look?
Like does it affect the color grading process?
Thank you :)
+JodyHongFilms I tweaked eoshd, it vastly reduces the amount of time it takes to colour the footage:)
Awesome! Thank you so much! :D
Hey! I'm getting a sony (a6500) and I'm learning alot from watching your videos! I'm a beginner and vlogger but I will vlog with slog2 like you. I'm just wondering what the s-curve thing you added in FCPX is? I use the same software and wondering if I need to get it. I'm going to try to find/buy some good luts for my vlogs and use hem with the slog2.. Only thing I'm worred about when vlogging is that it's nonpop out screen. If you have any tips for me as a vlogger I'm grateful! I will be getting my camera later today.. just waiting for the slow UPS guy! Lol😊
+Lisa Nilsson hi! Exciting times, the a6500 is great :) check out the must have plugins vid, pretty sure I linked the s-curve plugin in the description. Also regarding the lack of a flippy screen, my recent SmallHD video will help there :)
So when setting up a shot in slog you should set you shutter , then Iso , then over expose your f stop by 2 ?
set shutter and fstop, then adjust iso but any higher than probably 1,000 will loose the benefits of slog. only adjust fstop if the shot doesn't need a bokeh
I just got the a6300 do you suggest using cine 4 or slog 2 for short films, music videos and car videos?
+TechKey TV cine4 is actually the most contrasty of the cine gammas, cine1 is the least contrasty plus you can use ISO 200 so that would be my recommendation :)
Harv Video/Audio Stuff .....your recommendation over the other Cine profiles or recommendation out of all the profiles? Guess it's all situational, but interested if you've got a favourite go-to!! 😊
I have a question, sir: are the S-LOG2 profiles the same in both the A7sII and the FS5 the same thing?
The way I understand it is the curve is the same but there are slightly different picture profile parameters in the fs5, so I'd say they would be pretty similar :)
Awesome, thanks so much for your feedback :)
you mention a video tutorial by matt workman can you send me the link
The concept of how one should expose slog2 is simple. But the application of it is not. zebras and the built in meter is truly not adequate for proper expose. It's a good guess, but it's not accurate. You need a monitor with a proper waveform to expose precisely. And you certainly cannot do it by eye.
Slog2 needs to be overexposed anywhere from 1 to 2 full stops as the gamma is designed to be. The latitude exploited for slog2 is in the highlights. The shadow details is sacrified for expanded range in the mids and highlights. If you have a waveform available your skintones will be in the 60-70 IRE range. The worst possible things to do is underexpose slog2. never underexpose it. you lose all the benefits of the gamma curve. Anything above 85-90IRE is irrecoverably lost as you're falling outside of the capabilities of the sensor and 8bit. The difficulty is that slog2 is a curve with 3 different shapes. Shadows (nearly flat), midtones (approaching linear), and highlights (very logarithmic) all have a different shape.
Hence proper exposure mean grading it is also a challenge as well. the best way to grade slog2 is to begin with a proper slog2 to Rec709 conversion LUT, not a stylistic LUT. once that is done you can make minor tweaks to the shadows, midtones, and highlights separately. Along the way (in resolve) you may need to adjust the intensity of the conversion LUT.
I highly recommend having a look at Alister Chapman's introduction to the FS5 to get a much better understanding of it than I can provide. Also slog3 is absolutely brilliant on the a7s ii, BUT exposure for it is quite different than SLOG2.
+trevorpinnocky well said (much better than I could have put it!), many thanks :)
sony really must do a much better job explaining it to customers. even seasoned videographers have trouble with slog2. there's like a million color settings in the camera and they don't explain any of them. At the very least they could add a waveform to the display? :)
Any idea where to learn anything about waveform . Lol.
Really A Super Beginner here.
Hello, try this. wolfcrow.com/blog/what-is-a-waveform-monitor-and-how-to-read-a-waveform-monitor-part-one/
So please can anybody tell me how do you set zebras on SLOG2? It just confuses me a lot, thanks very much for your work ;) !
What method or type of metering are you using to determine a 2 stop over exposure in that high contrast outdoor shot?
+Christopher Cox no metering, as I used different shutter speeds to change exposure it's very easy to work out
Harv Video/Audio Stuff
Thank you for your reply. I should have worded my question differently. How did you measure the exposure before you raised it by two stops? There's many ways to gauge exposure, and in high contrast scenes it becomes even more of an art. Often we have to choose which part of the frame to expose properly. Zebras will tell us how much detail we'll lose in the sky, but they won't tell us anything about the rest of the frame. A histogram will tell us something in the frame is clipping, but not what. A "good" histogram would result in an underexposed foreground, because the reading would be too influenced by the sky behind. I'm curious how you got around that problem?
+Christopher Cox I don't think I said I was two stops over, but you're right it is a bit of an art and takes practice. In slog2 I feel like it's best to use the histogram to expose the shadows up to around 25-30%, i find it really pretty tricky to clip highlights. I should've said I also (almost) always use false colour, tells you everything you need to know :)
Harv Video/Audio Stuff
I was going to ask if you used a monitor with false colour (but my comment was getting somewhat lengthy). That tool is very useful for high contrast shots.
Why did you shoot a day exterior at 1,600 iso? Is 1,600 the lowest iso S-log 2 will allow?
+Matthew MacCarthy yes indeed
800 is
+Mike Rawlings 800 on the a7r2, 1600 on the a7s2
are you using ND filter on the test you did ?
+Solleh Zarady no nd, I used shutter speed to alter exposure so that there's no colour weirdness :)
Hi Harv,
So in basic terms, Slog2 is for outdoors and Slog3 is for indoors?... I really have this difficulty working with the noise that provides each of them with the shadows... (I have the FS7) ... Awesome video by the way...:)
+Sergio Paz I really don't tend to use slog3 at all anymore, I might do if I had an fs7 tho :) I'd be really curious how the slog3 differs between the fs7 and a7s2
Well, these couple of weeks I have been trying to use de slog3, But I manage to control the noise using the gamma in the camera, and of course putting a LUT in the monitor to see all the contrasts and shadows, but still has a little bit of a noise problem in it... Im gonna try next week using a plug in to clean it up...To be honest, I find my way easer to work with the custom mode due to the post...But I´ll keep trying..!!! Thanks a lot Harv... Learned a lot from your videos..!!!
I love your channel however, how could you do a slog video with no mention of zebras?
Thanks! Harv Just What i really needed.
Oh and Whats S Curve.(Anyone?)
Big Thumbs Up.
+Domanic Ong much appreciated :) an S-curve basically adds contrast in a pleasing (in my opinion) way
I have a feeling that SLOG 2 is gonna become my favorite profile too... I shot with it for the first time the other day and on some test frames I just applied 3rd party Slog2 to Rec709 LUT and without any other tweaks the footage looked much-much better than my usual shots. I'm gonna have to try and edit the full footage from that day to make my final decisions.
Please do a video on ETTR for slog 3 and exposing with zebras.
+Abhinav Joshua many thanks, did you see the exposing slog3 video I did previously? Might be what you're looking for as I definitely ETTR :) I find zebras pretty useless with any kind of log profile
I have always ISO 3200 in slog2/3 andai cant change it ! My camera is alsow sony 7s m2
+sepeliova1 hmm that's really odd, the only time it should limit your base ISO is when you're in 100/120fps modes. I can't think what else it could be, may be worth contacting Sony
sepeliova1 same for me
Gotta ask you this, how to expose keeping the same ISO? And im guessing you'r using the same shutter speed.
Moriael Bandeira I noticed that too. Dramatic changes by presumably changing just the aperture (but no noticeable depth of field adjustment...?!) so must have adjusted SS too??
+Moriael Bandeira I actually changed just the shutter speed as I wanted to keep the same dof, if I use ISO there are odd colour shifts etc :)
+Devon Flair shutter speed is correct :)
Harv Video/Audio Stuff Interesting! I've not been too shy changing my ss on video (though try to keep to the 2x rule where possible) - so where do you stand on that rule? People get really funny about it like it's an 'absolute' in videography...?
I like to keep the shutterspeed as close to the 180 degree rule as possible to avoid any disruptions to the motion blur I'm going for. Because of this, I usually pop a neutral density filter on if I need a darker exposure.
You should more b role to make you videos interesting