08-09-2012, 09:08 PM
C'mon Sammy <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/smile.gif' class='bbc_emoticon' alt='
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nandavieast. There're possibly two reasons that we often read of :
-manufacturers have different interpretations of the standards and adjust their camera according to their own scale that may differ from others.
-manufacturers try to "cheat" so that ISO speed tests, when not carefully done and comparing cameras at same ISO values regardless of other settings, will look favorable.
E.g. camera A set at ISO1600 & f/8 uses a shutter speed of 1/250s
camera B set at ISO1600 & f/8 uses a shutter speed of 1/125s. Camera B may be showing identical noise levels but it does so by exposing twice as long.
Reviewers have found the OMD to be doing so by 1/2 to 2/3 of a stop, or something like that.
I guess that's what you read. IMHO, in the specific case of the OMD, I wouldn't bother much, the camera is a gem.
Greetings,
S.
' />nandavieast. There're possibly two reasons that we often read of :
-manufacturers have different interpretations of the standards and adjust their camera according to their own scale that may differ from others.
-manufacturers try to "cheat" so that ISO speed tests, when not carefully done and comparing cameras at same ISO values regardless of other settings, will look favorable.
E.g. camera A set at ISO1600 & f/8 uses a shutter speed of 1/250s
camera B set at ISO1600 & f/8 uses a shutter speed of 1/125s. Camera B may be showing identical noise levels but it does so by exposing twice as long.
Reviewers have found the OMD to be doing so by 1/2 to 2/3 of a stop, or something like that.
I guess that's what you read. IMHO, in the specific case of the OMD, I wouldn't bother much, the camera is a gem.
Greetings,
S.