06-20-2010, 08:41 PM
[quote name='wim' date='20 June 2010 - 12:51 PM' timestamp='1277034701' post='625']
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
[/quote]
It could also be my eye. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/rolleyes.gif' class='bbc_emoticon' alt='
' />
I do tend to have problems with blurriness towards the edges of the viewing area when focussing on off-centre subjects. I checked again today, and in the centre the S screen is fine, but towards the edges it gets more difficult to really nail the focus.
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
[/quote]
It could also be my eye. <img src='http://forum.photozone.de/public/style_emoticons/<#EMO_DIR#>/rolleyes.gif' class='bbc_emoticon' alt='
' /> I do tend to have problems with blurriness towards the edges of the viewing area when focussing on off-centre subjects. I checked again today, and in the centre the S screen is fine, but towards the edges it gets more difficult to really nail the focus.