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I have a X-Pro2 and an original Fujifilm M adapter, my question is in regards of Lens Registration that is available for 50mm and 75mm.

Take LENS 5   50mm Focal Length Setting, Input Focal Length.

Using M mount lens of 50mm Focal Length should I change it to 75mm as this is the focal length that 50mm lens becomes on APS sensor X-Pro2 camera?

 

Thank you in advance for your help.

Edited by V23
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To keep things consistent put in the real focal length, this matters because the number you put in is what will be put in the exif data and fuji uses the real focal length (for the fuji lenses) there.

 

Note that this number does nothing else, like distortion correction, etc. You need to change those corrections in the same lens settings.

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