DXOMark just tested the D3X

Started Jan 15, 2009 | Discussions thread
Iliah Borg Forum Pro • Posts: 28,632
Re: Thanks Frank!

DxO do not measure and present the visual impact of noise. Same noise numbers can correspond to fine grain agreeable and ugly blotchy noise. Noise numbers are different for files white-balanced for different colour temperatures, they do not test those however. Noise should be measured separately for luma and chroma, that is also skipped.

It matters how many gradations of grey are recorded in the last stop. Some of the tested cameras make the last stop barely separable from the previous while others allow for the practical use of the last stop. For example, if you need to open shadows on A900 it is better to sacrifice some DR but shoot as ISO 400 to ISO 640. DxO tests won't show you this because they do not have the criteria for the photographic usefulness of the last stop.

Colour measurements they do are a poor man's substitution of sensor spectral characteristics, and are unusable as such, or as a tool to compare sensors. The more meaningful numbers are numbers of metameric faults by band, say, how many metamers are in the hues that represent skin, foliage, sky.

Mathematics and physics are to be applied to the subject of photography, results should be meaningful and reported in the language of photography; and here DxO tests are lacking.

-- hide signature --
Post (hide subjects) Posted by
Mel
Mel
Mel
Mel
Mel
Mel
Mel
Mel
Mel
Mel
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow