PL 15mm actual FL?

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Stupot99 Regular Member • Posts: 382
PL 15mm actual FL?
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I took a photo of a metre rule with the PL 15mm

OOC

The horizontal width is 703mm and the distance from the rule to the camera sensor was 642mm. That gives a horizontal AOV of 57.4 degrees, which mean the focal length is 15.8mm

Out of curiosity, I turned off the Distortion Correction in the EXIF in the RAW file.

Distortion correction OFF

Now the horizontal width is 751mm. That gives a horizontal AOV of 60.6 degrees, which mean the focal length is now 14.8mm

So, the uncorrected image gives an angle of view / focal length much closer to the Panasonic value than the distortion corrected view, which seems a bit unfair to me.

 Stupot99's gear list:Stupot99's gear list
Panasonic Lumix DMC-GX85 Panasonic Leica DG Summilux 15mm F1.7 ASPH Panasonic 12-60mm F3.5-5.6 OIS
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