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Image-ExifTool
Posted on 2006-05-25 21:32:47-07 by geve
Minolta makernote Fnumber formula
I was comparing the minolta F-values for
- Tag 0x9202 ApertureValue
and
- Tag 0x927c MakerNote / Sub Tag 0x0001 / sub Tag 0x000a FNumber

See my table

#1. First 2 columns is how the camera should calculate the Exif value
F5.6 and F5.7 resulting in the same Exif value 48

#2. The formula for calculating from using the ExifTool formula resulted in green fields when ApertureValue and Fnumber match. This is mainly for the Dimage 5 and 7
I tried to change the formula (try-1 and -2), but was only more succesful for th A1

Do you have any thoughts about this?

Ger
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