Liam Hall
Veteran
Lol he's pulled the video. Wonder if it had anything to do with my comment pointing out how he failed to expose S-Log2 or C-log correctly? Surprised no one else noticed, thought it was was an obvious error...
A7s sample footage
- Thread starter squig
- Start date
Lol he's pulled the video. Wonder if it had anything to do with my comment pointing out how he failed to expose S-Log2 or C-log correctly? Surprised no one else noticed, thought it was was an obvious error...
this is actually a really nice little a7S video- nice colors, no strange correction/grade-
i used to shoot with an fs100 and could never quite get the reds to come out naturally. always either too muted, or velvety and over saturated.
i've noticed a touch of this on my a7S as well (even in stills). although, it seems a little better- just hoping someone will fine tune a great profile for it soon. <--- Frank Glencairn are you out there =]
https://vimeo.com/groups/243026/videos/100091280
i used to shoot with an fs100 and could never quite get the reds to come out naturally. always either too muted, or velvety and over saturated.
i've noticed a touch of this on my a7S as well (even in stills). although, it seems a little better- just hoping someone will fine tune a great profile for it soon. <--- Frank Glencairn are you out there =]
https://vimeo.com/groups/243026/videos/100091280
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Liam Hall
Veteran
Yes, it's back now. Hope he has better success with the next test.
griplimited
Well-known member
Strancali,
I met you some time ago for the Zeiss 50mm. You're still local? I would love to see this cam in action.
I met you some time ago for the Zeiss 50mm. You're still local? I would love to see this cam in action.
strancali
Well-known member
Yes I remember, I can meet you somewhere tonight or tomorrow and mess with some night shots
. I'm heading out right now but shoot me a pm, i'll be back in a couple of hours.
squig
Veteran
Yes I remember, I can meet you somewhere tonight or tomorrow and mess with some night shots
Don't fall into a sinkhole.
squig
Veteran
Exposing to the left is about the worst thing you can do with any CMOS sensor, I haven't seen anything that proves the A7s is an exception, quite the opposite. With its wide dynamic range you should be able to shoot further to the right and recover the highlights in post. The only issue with that is the damned highlight aliasing.
Uwe Lansing
Veteran
Looks like "Sky-Banding" and always this intense noice...
paulcurtis
Veteran
Are people noting what format they are recording in, because you can choose AVCHD as well as XAVC. One thing i didn't realise is that XAVC requires an SDXC card, it won't work with SDHC cards. All mine are SDHC so i cannot record at the higher rates until amazon delivers today. That caught me by surprise and i wonder how much stuff we've been criticising has been AVCHD which is half the rate.
There's some super cool stuff on the camera. One thing i like is the fact you can turn off the real exposure 'effect' in the viewfinder, so if you're exposing dark thats fine, but on the displays it can show it as bright as it can making focus a lot easier. Although it doesn't appear to be possible to put that on a custom button which is a bit of a UI fail. How cool is that though - exposing some moody dark stuff yet it looks like daylight for composing and focusing.
I will attempt to get together some range tests with the FS100, 700, O7Q and A7s over the weekend...
cheers
Paul
There's some super cool stuff on the camera. One thing i like is the fact you can turn off the real exposure 'effect' in the viewfinder, so if you're exposing dark thats fine, but on the displays it can show it as bright as it can making focus a lot easier. Although it doesn't appear to be possible to put that on a custom button which is a bit of a UI fail. How cool is that though - exposing some moody dark stuff yet it looks like daylight for composing and focusing.
I will attempt to get together some range tests with the FS100, 700, O7Q and A7s over the weekend...
cheers
Paul
Ryan Patrick O'Hara
Veteran
I got my A7s today in the mail today. Bought it for photographs mainly but will be doing some vacation videography with it for fun. I am still gathering my input and thoughts on the quality, however i'm wondering what the @#%@ this person was using in the video where it knocks around violently. Is that some sort of post stabilization gone wrong?
don't care, looks like lense breathing due to an over enthusiastic AF... bandings in the sky due to low quality codec + yt compression, I hope.
Perhaps all on auto, but to be honest - if we ignore the sound
+ bold shaking... it is not that bad, really. I had still hope a pair of this bodies could handle daylight and pleasant skintones etc. as well as night shots.
Liam Hall
Veteran
Technically middle gray should be 32%. In reality, on an F5 or C300 I'm usually up around 40% to avoid noise. It really depends on how much highlight detail you want to retain. Shooting log is not for everyone. On the C300 I find myself shooting wide dynamic range as much as C-Log, particularly if I'm not overseeing the workflow.
There's lots of useful info on Abelcine. Here's a couple of articles for staters;
http://blog.abelcine.com/2013/01/18/sonys-s-log2-and-dynamic-range-percentages/
http://blog.abelcine.com/2012/06/21/applying-luts-to-log-footage-in-fcp-premiere-avid-and-resolve/
Liam Hall
Veteran
You need to understand shooting video in LOG is not the same as shooting stills in RAW. Setting correct exposure is a two part operation. There's what you do on the camera and what you do in post. If you expose to the right in camera you will be overexposed when you come to grade. It's one of the reasons there is so much horrible footage on TV at the moment; operators simply haven't grasped how to expose in LOG. They are often saved by the extended dynamic range of these cameras, but they're simply not getting close to what these cameras can produce.
Some reading:
http://provideocoalition.com/aadams/story/the_not_so_technical_guide_to_s_log_and_log_gamma_curves/
paulcurtis
Veteran
don't care, looks like lense breathing due to an over enthusiastic AF... bandings in the sky due to low quality codec + yt compression, I hope.
Perhaps all on auto, but to be honest - if we ignore the sound
It does look like post stabilisation because the violent moves happen when the cars move into frame, so the stabilisation process thinks that car is part of the background then realises it isn't and jumps back. There's also distortion in some shots which looks like a warp stabilisation. My guess is after effects or similar. Dumb stabilisation basically. Urgh.
Never underexpose in Slog. If you can afford to loose some highlight expose up a bit.
What is interesting though is that you can tweak the Slog2 Picture profile (which makes a mockery out of it being SLog2 but i digress)
Both Black Gamma and Manual Knee settings DO apply in Slog2 on the A7s, unlike the FS700. So it's conceivable to optimise the range for a particular environment. The downside is that Slog2 has to be post processed and if you make alterations then any upstream workflow that understands Slog2 will not 'unfold' the A7s image in the same way. So be careful about playing with these settings.
cheers
Paul
Spybreak
New member
I got my A7S yesterday and although I'm pretty terrible at it I gave Slog a shot. I combined a couple of the Impulz LUTs to try to get a filmic look.
Unfortunately I underexposed a few shots which show a lot of noise once I lifted them up (the tunnel shots mainly). I had no idea what I was doing as the menus are quite confusing and exposing Slog is hard. But hey, the camera is a lot of fun.
Unfortunately I underexposed a few shots which show a lot of noise once I lifted them up (the tunnel shots mainly). I had no idea what I was doing as the menus are quite confusing and exposing Slog is hard. But hey, the camera is a lot of fun.