>Does anybody know of a quick and simple way to set the dioptic
>adjustment accurately? I've just got back a test film on a
>100/2.8 to find that I thought I had focused on a target 20ft
>away but was actually focused closer to the 30ft mark <gulp>.
>This is all down to age and beer I'm afraid so getting the
>adjustment right is needed
Age is unavoidable, and good beer is not to be avoided.
Maybe I'm missing something here (not the first time), but why
not use the split image biprism (in screens 1-13 and 2-13) to
focus? My eyes have some additional problems (not relevant here)
and so I always use the split image lines to focus. If the light
is good enough, I can often also use the outside of the biprism
to fine tune the focus. Admittedly, the split image cannot be
used effectively on objects with no straight lines.
Pete
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