E-M5 has DR 13!

Started Apr 13, 2012 | Discussions thread
Detail Man
Detail Man Forum Pro • Posts: 16,789
Re: E-M5 has DR 13 ! - Only 25.81 Times Higher Than Physically Possible !

Macx wrote:

Detail Man wrote:

Note: Just remember that 12-bit analog/digital converters have less than 12 EV Dynamic Range ...

I'm just wondering, but could some of the idiosyncrasies you've noted indicate that the sensor may use, for example, 14-bit ADC's and the data is being converted into a 12-bit RAW file format?

It sounds like you might want to follow through on my further thoughts on that thread. See:

Addendum: http://forums.dpreview.com/forums/read.asp?forum=1041&message=41194176



... a realistic and (what should rightly be) humbling epistle for all involved in alleged analysis of DPReview Studio Comparison Tool RAW test-shots; a thorough recitation of the measurement uncertainties involved (which also references my previous related post on the same thread, here):


I'm no industry-expert, but my general feel is that it is rather unlikely that the E-M5 employs 14-bit analog/digital conversion. bobn2 would seem to be the best person to ask about that possibility

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