On Nov 17, 2005, at 1:22 PM, Ralf R. Radermacher wrote:
Things have gotten a little odd with my no-line glasses and cameras,
over the last months.
All my viewfinders are blurry unless I look into them from a
distance of
about 3 to 4 inches. Sole exception: an old Kiev 60 prism that used to
be blurry before now is tack-sharp. The former one that worked well
for
years now doesn't.
Now, with the LX's diopter correction set to '0', things are
reasonably
sharp again from a normal viewing distance.
I take it normal camera viewfinders - the non-adjustable ones - do
have
a slightly negative value as their standard setting.
Normally, a -1 diopter is used as standard for camera eyepieces to
assist in focusing on the screen. I had a Hasselblad which was fitted
by default with a 0 diopter magnifier on the WL finder ... couldn't
focus it worth a damn until I replaced the magnifier with a -1.
If you're experiencing a quick change in your vision like that, it's
time to go see your eye doctor.
Godfrey
