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02-13-2011, 09:34 AM   #1
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Iso 100 or 200 645d

What am I giving up when shooting my 645d at iso 100 extended as opposed to its native 200 setting?

Steven

02-13-2011, 10:35 AM   #2
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Steven,
according to DxO lab test, there is nothing to lose.

DxOMark - Pentax 645D

from their test you gain 1 stop in DR, but probably extremely accurate exposure is required to avoid
highlight blocking.

Sergio

Last edited by sergiolov; 02-13-2011 at 12:54 PM.
02-13-2011, 02:24 PM   #3
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Original Poster
Sergio,
So do you shoot yours at 100 or 200?

Steven
02-13-2011, 03:20 PM   #4
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My experience with 645d is limited.
Usually I prefer iso 100 on tripod, with long exposures and time to correct errors.
This is the example I posted in the FA35 interior test, this copy corrected for white balance.
Seems that long exposures at iso 100 have very low noise.




Sergio

02-13-2011, 11:43 PM   #5
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So far what I've been doing.

100ISO when shooting with strobes and I've got full control of the lighting situation.

200ISO when shooting indoors with a reasonable amount of light or outdoors.

400+ at night in lo-light and have shot at 400, 800 and 1600 and am happy with the results achieved.
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