Question regarding ISO 200 vs ISO 400

A

astro21

Member
Hello,

It is my understanding that on the AF100 the base ISO is ISO 400, but I have been using ISO 200 in a great number of situations, whether indoors or outdoors.

Is there any counter-indication on using ISO 200 instead for all purposes? I cannot see any significant image difference between the two ISO settings, but perhaps since ISO 400 is equivalent to 0db of gain, then ISO 200 should only be used when there simply is too much light for the AF100 at ISO 400?

Thank you.
 
No reason at all why you should not continue doing what you are doing ...IMHO.

FWIW. We use 200 / 400 as base ISO. My mind and logic (as a film cameraman) tells me that 200 shoudl be "best" but my experience and analysis can not prove that it is!

Go with the "eye".
 
Same here. I shoot mostly at 200 and 400. Can't really see any difference in terms of quality/noise gain or lost between the two.
 
+1
I haven't noticed any visible difference between 200 and 400 ISO.
there's a slight difference when you go up to ISO 800, but it's still workable IMO.
 
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