FZ200 does ISO-noise increase linear ?

Started 10 months ago | Discussions thread
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DUBTEMPLE
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FZ200 does ISO-noise increase linear ?
10 months ago

Ok, doing the first experiments with FZ200, even thoug I am a rookie, and until now mostly shot in auto with my old Nikon P100, it quickly becomes clear, that ISO above 400 is better avoided,..

On a grayish dark day, shooting with TC, f4, full zoom, focus on stone half way out in a lake, the wood at the opposite coast is being heavily attacked by noise, starting clearly from iso 400

But then at the opposite, without TC, taking a macro of my watch, at 2.8, at the kitchen table, no flash, but good light from neon near by, increase in noise at 400 is not so disturbing, its almost ok

So my question: is iso-noise a constant parameter that increases linear step by step as you increase iso numbers 100-200-400-800---- no matter the light conditions an other things ?

Or is it possible, like in my experiment, to use higher iso at better light conditions, and then at least having the possibility/advantage of faster shutter-timers ?

Thanks for any help

 DUBTEMPLE's gear list:DUBTEMPLE's gear list
Panasonic Lumix DMC-FZ200
Nikon Coolpix P100 Panasonic Lumix DMC-FZ200
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