White balance question

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MichaelInGC Contributing Member • Posts: 509
White balance question

I am guessing I should know this, and perhaps somewhere in the back of my mind I do, but I do not see the answer.

I did some testing to see if the E-M1 II really had a focal length multiplier of 2 as the documentation says and set both my Canon FF and the E-M1 to the same settings. Both had the same color space (sRGB), both had the same picture mode (Landscape) and both had the same exposure settings. I shot one photo for the Canon FF (300mm) and one for the E-M1 II (150mm) to compare the two image sizes.

The images were not the same size (as you can see) but what really surprised me was that I needed to correct the white balance on the Olympus photo, but not on the Canon. Both of the images below are from the raws, processed in Dxo Optics Pro using the same preset (Dxo standard preset). I expected the color to differ as the images are from different cameras, but I did expect the white balance to be the same.

Here are both images without manual white balance correction.

Canon image - no extra white balance needed

E-M1 II image. White balance correction is needed.

As you can also see, the multiplier is not really 2.0x, although it is close.

 MichaelInGC's gear list:MichaelInGC's gear list
Olympus E-M1 II Olympus M.Zuiko Digital ED 40-150mm 1:4-5.6 R Olympus M.Zuiko Digital ED 12-50mm 1:3.5-6.3 EZ Olympus M.Zuiko ED 75-300mm 1:4.8-6.7 II Olympus M.Zuiko Digital ED 14-42mm F3.5-5.6 EZ +3 more
Olympus E-M1
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