ISO 100, OMD-EM1II and firmware 3.0?

Started 2 months ago | Questions thread
JaKing Senior Member • Posts: 5,455
Re: ISO 100, OMD-EM1II and firmware 3.0?

Wolfgang, I only ever felt the need to use the extended LOW ISO with my E-30, not with either of my E-M1s (MkI or MkII).

With the E-30, which was a real noise machine given half a chance, using ISO 100 certainly lessened the noise. Never noticed any other changes for good or ill.

The main advantage is that you are getting a longer exposure on your sensor because the (nominal) ISO is lower. If you catch twice as many photons this way, the noise will be lower.

I suspect that using extended LOW settings with any camera that offers it/them is going to help with noise, but little else.

With the E-M1 MkII, using the lower extended settings keeps DR much the same, and that's a considerable improvement on previous sensors, most of which caused the DR to drop when using the extended setting (e.g. my E-M1 MkI). See Bill Claff's site for comparisons of whatever cameras you choose. It is here:,Olympus%20OM-D%20E-M1%20Mark%20II

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br, john, from you know where
My gear list and sordid past are here:

 JaKing's gear list:JaKing's gear list
Olympus E-M1 Olympus E-M1 II Olympus M.Zuiko Digital ED 14-42mm F3.5-5.6 EZ Olympus 12-100mm F4.0 Olympus E-1 +28 more
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