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03-26-2017, 04:18 PM   #1
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"sensor size" EXIF vs published value for photogrammetry

For my K-50, the published sensor size is 23.7mm x 15.7mm. When I look at the EXIF file, it says the sensor size is 24.122mm x 15.976mm. The only guess I have is that the EXIF size is the actual size but the camera crops it down a little bit.

Does anybody know for sure what the difference is?

Thanks,
Dan

03-26-2017, 04:29 PM   #2
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This is par for the course. Camera manufacturers often leave a strip of pixels along one side for calibration purposes and other internal uses.
03-27-2017, 12:57 AM   #3
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IBIS needs some space too.
03-27-2017, 01:02 PM   #4
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QuoteOriginally posted by MartinsB Quote
IBIS needs some space too.
But IBIS is not a part of this difference. IBIS moves the sensor around, it doesn't change its size or consume some of the pixel rows or columns. To be exact, In Pentax APS-C and FF systems the sensor may move up to 1,5 mm, left, right, up or down, from the center position, and/or rotate within the same frames.

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