Trying to Choose New Camera and Lenses: Sony NEX vs Olympus OM-D

Started Jan 24, 2013 | Questions thread
Everdog
Senior MemberPosts: 4,837
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This will help you.
In reply to wictred, Jan 26, 2013

Once we measure the target and calibrate the DxO Analyzer software, the selected camera shoots an image of the noise target at different ISO settings, and we measure the noise for each color channel of the target image (R, Gr, Gb, B). We compute the mean gray level and noise values for each patch and for all images shot at different ISO settings. We then interpolate these numerical values for all gray levels to calculate and plot signal-to-noise ratio (SNR) curves, from which DxO Analyzer extracts the SNR 18%, the dynamic range, and the tonal range.

Read more about SNR, dynamic range, and tonal range.

http://www.dxomark.com/index.php/About/In-depth-measurements/Measurements

btw, for ISOs 100-3200 they NEX 7 and E-M5 are virtually the same for SNR, dynamic range and tonal range. Since the E-M5 has IBIS and superior native lenses, IMHO we can expect it to perform better at those ISOs.

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