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Low-light 4K Video Performance - Sony A7 RII vs A7 sII


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#1 Joe Taylor

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Posted 22 December 2015 - 09:39 AM

Very curious in Sony's A7 series latest DSLR cameras primarily for their real time 4K video low-light abilities. Can somebody in the know chime in about the low-light abilities (again 4k video) for the Sony A7R II vs the A7 SII? 

 
Thank You

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#2 Vivek Venkatraman

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Posted 08 January 2016 - 01:15 PM

Hi , Joe

 

I did a couple of tests with the a7s ii as I am considering it for a project which involves a lot of night exterior as well as night interior.

 

Here is what I learnt

 

1 - I heard that the sensor performs pretty much the same as the a7rii or the a7s even in low light [different in day however]

2 - The base iso in slog 3 is 1600 and the native iso of the sensor is 3200.

3 - There is a lot of visible noise in the blacks and shadows at almost any iso when shooting slog 3

4 -  There is less noise when shooting a normal gamma profile such as the Picture profile 4 or Cine 4


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#3 Phil Rhodes

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Posted 08 January 2016 - 02:14 PM

There is a lot of visible noise in the blacks and shadows at almost any iso when shooting slog 3

 

How are you viewing it?


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#4 Robin R Probyn

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Posted 08 January 2016 - 10:23 PM

Slog3 will show up more noise in the shadows because its a high DR log curve ..compared to standard gamma,s.. it will go away when graded ..  if there was at least enough light for Slog to get a decent exposure.. !

 

Not advisable use Log when its really dark anyway..


Edited by Robin R Probyn, 08 January 2016 - 10:36 PM.

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#5 Vivek Venkatraman

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Posted 10 January 2016 - 03:44 AM

@Phil

 

On a Mac Book Retina Display


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#6 Robin R Probyn

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Posted 10 January 2016 - 04:30 AM

Alot of the noise of log will go away when corrected in post..when exposed correctly.. but shooting log in the dark in 8 bit is not the best idea.. have a look at this article .

 

http://www.xdcam-use...-for-low-light/


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#7 Jon Kline

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Posted 18 January 2016 - 05:54 PM

The A7sII is the camera to use for low-light 4K. The pixels are more than triple the size of the A7rII, so you'll get a lot less noise in the very dark. But exposure is still important, of course, so don't go shooting two stops under and expecting miracles.


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