Do E-M5 Blinkies Work Well without "UniWB" ?

Started May 30, 2012 | Discussions thread
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Detail Man
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Do E-M5 Blinkies Work Well without "UniWB" ?
May 30, 2012

Much has been alleged here and there on this forum regarding E-M5 (preview mode) "Blinking Highlight" indicators where it comes to maximizing E-M5 RAW-levels without "clipping" (which, of course, also affects the highlights of any recorded JPGs, as well). The statements made would lead the casual reader to believe that specific evidence exists that the E-M5 (preview mode) "Blinking Highlight" indicators are useful for this purpose - without a "UniWB" configuration, and when using Ave. WB, or preset WB modes. Yet, the only evidence that I can locate is rather to the contrary .

See: http://forums.dpreview.com/forums/read.asp?forum=1041&message=41246402

The truth regarding these matters seem to have a significant impact on such usages of the E-M5. Note that there exist a high-quality, free, and non-invasive application (for PC or Mac) that allows one to easily investigate the actual facts surrounding what is (or is not) going on with the E-M5:

RawDigger 0.9.11 Beta at: http://www.rawdigger.com/news/rawdigger-0-9-11

I created a thread which contains some information regarding how to use RawDigger to do this:

http://forums.dpreview.com/forums/read.asp?forum=1041&message=41476765

http://forums.dpreview.com/forums/read.asp?forum=1041&message=41481040

http://forums.dpreview.com/forums/read.asp?forum=1041&message=41481486

http://forums.dpreview.com/forums/read.asp?forum=1041&message=41491371

Note that the maximum RAW-level (ADU value) of the E-M5 at base ISO=200 (after the standard black-level subtraction is performed) equals 3811. This may vary somewhat at different ISO Gains (but probably not by very much). To make sure that you determine the relevant maximum RAW-level (ADU value) in your testing, simply record an intentionally highly overexposed test-shot, and have a look at it in RawDigger . Use that maximum RAW-value as a measurment reference.

It would be interesting to see what E-M5 users find. Please post about your findings on this thread

DM ...

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