06-20-2010, 11:51 AM
[quote name='genotypewriter' date='20 June 2010 - 12:43 PM' timestamp='1277030607' post='624']
There are rare times when either the sensor or the focusing screen is not shimmed equally/correctly. These will cause differences in focus between the captured image (sensor) and what's on the VF. And I've heard that misalignment (i.e. focus on one side, etc.) can also be caused by incorrect shimming. I don't think there are multiple shims for the focusing screen, so it has to be your sensor mount then (if there is such a problem at all). Just thinking out loud...
GTW
[/quote]
There actually are multiple shims for the focusing screen, in several thicknesses, for each camera body. Shims can be bought in sets of different thicknesses, so that the correct distances of focusing screen to lens can be set. This is not aprocedure for th efaint of heart, however, and is probably best left to a Canon Service Center for most of us.
HTH, kind regards, Wim
There are rare times when either the sensor or the focusing screen is not shimmed equally/correctly. These will cause differences in focus between the captured image (sensor) and what's on the VF. And I've heard that misalignment (i.e. focus on one side, etc.) can also be caused by incorrect shimming. I don't think there are multiple shims for the focusing screen, so it has to be your sensor mount then (if there is such a problem at all). Just thinking out loud...
GTW
[/quote]
There actually are multiple shims for the focusing screen, in several thicknesses, for each camera body. Shims can be bought in sets of different thicknesses, so that the correct distances of focusing screen to lens can be set. This is not aprocedure for th efaint of heart, however, and is probably best left to a Canon Service Center for most of us.
HTH, kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....