Rogue ISO settings


RobL

Link Posted 27/12/2014 - 10:36
In a recent post Richandfleur included a link to a DSLR video tutorial. On ISO settings it said to avoid any multiples of 125 - i.e. 125, 250, etc as these will create noise. Anyone come across this before? Anyone know why?
Last Edited by RobL on 27/12/2014 - 10:39

richandfleur

Link Posted 27/12/2014 - 10:53
It's not something I've considered much myself.
I do wonder if it's a canon specific thing or if it's comon to all?

http://petapixel.com/2011/05/02/use-iso-numbers-that-are-multiples-of-160-when-s...

It seems to relate to real ISO sensor analogue gain steps vs software simulated intermediate stops.
As above, not sure if pentax does this or not. There is another good description answer here:
http://photo.stackexchange.com/questions/43756/is-it-really-better-to-shoot-at-f...

RobL

Link Posted 27/12/2014 - 11:04
richandfleur wrote:
It's not something I've considered much myself.
I do wonder if it's a canon specific thing or if it's comon to all?

http://petapixel.com/2011/05/02/use-iso-numbers-that-are-multiples-of-160-when-s...

It seems to relate to real ISO sensor analogue gain steps vs software simulated intermediate stops.
As above, not sure if pentax does this or not. There is another good description answer here:
http://photo.stackexchange.com/questions/43756/is-it-really-better-to-shoot-at-f...

Thanks richandfleur, to add it seems this applies to internally processed images in JPEG & video and not to RAW files.
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