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Author Topic: 35mm vs 50mm lens on a Canon APS-C sensor  (Read 6223 times)

drdirk

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35mm vs 50mm lens on a Canon APS-C sensor
« on: December 19, 2023, 04:09:49 PM »
Hi all,
I am designing a human head scanning rig. I am currently trying to decide which lens to use. Either the Canon RF 35mm for 500$ a piece or the cheaper Canon RF 50mm for 150$ a piece. I would like to go with the cheaper option. As the lenses will be mounted on a Canon R100, which has a APS-C sensor (22.2mm x 14.8mm) the camera has a crop factor of 1.6, which leads to the 35mm focal length being similar to a 50mm focal length and the 50mm focal length being similar to a 80mm focal length on a full frame sensor.

Can I use the cheaper 50mm lens for my project without high losses in quality?

I tried to calculate different properties like FOV, camera distance, transversal and axial magnification, but don't really know how to interpret the numbers. You can find my calculations attached.