<<<The viewfinder is not so easy with glasses.
>From FAQ's esif:
https://esif.world-traveller.org/oly_faq.htm#ques_P9
"P9) What is the eye-relief like on the various OM's? How can I improve the eye
relief on my OM-4(Ti)?
Which OM viewfinders are easy to see with glasses on?
That is, which OM cameras have relatively long eye relief
(high eyepoint)? None of them is comparable to the Nikon F3HP.
Michael Covington, a lifelong eyeglass wearer, finds the OM-1
just adequate for use with glasses and the low-end OM's (OM-10,
OM-F, etc.) more than adequate. The eye relief of the OM-2,
OM-3, and OM-4 is not so generous because Olympus added displays
outside the picture area, requiring you to keep your eye closer
to the camera in order to see it. In the OM-4T, and perhaps
others, it is easy for an eyeglass wearer to be totally unaware
of the LCD display, which is not visible at all when looking
straight at the picture area.
You can increase the eye relief (eyepoint) of the OM-3 and OM-4 so you can more
easily see the display with your glasses on using one of the following three
methods:
(1) If your eyeglass prescription is fairly weak and you don't have
astigmatism, consider using the camera with your glasses off, adjusting the
diopter adjustment so you can see the viewfinder image clearly.
(2) With your glasses on, turn the diopter adjustment as far *counterclockwise*
as you can while maintaining a sharp image. This will give you the maximum eye
relief.
(3) If you *really* want an improvement, do the following. This will not make
the OM-4T into a Nikon F3HP, but it will at least put it into the same class as
the Minolta SRT series or Nikon F3 non HP; you will be able to see *almost* the
whole picture area and display with glasses on:
(a) Get an eyeglass maker to make you a plano-concave lens, flat on one side,
power -2.0D, plastic, rectangular, 11.5 x 17 mm. (Mine cost about $20.
Anti-reflection coated lenses are available at higher cost.)
(b) Using sandpaper, round the corners of the plastic lens and reduce its size
slightly so it will press-fit into the OM-4T eyepiece frame. Round one of the
corners more than necessary so you will have room to pry the lens out if you
need to do so in the future.
(c) Clean the lens and press it into the eyepiece frame. (Do not use the
Olympus diopter lens holder; the whole point is that you must add this lens
without taking up any further space.) *CAUTION*: The glass window at the back
of the eyepiece frame is very easily broken; don't push the lens in so far that
it touches it.
(d) Turn the diopter adjustment all the way counterclockwise and leave it there.
The result: A significant increase in eye relief; a slight decrease in
viewfinder magnification (but it's still much greater than the Nikon F3HP); and
you can no longer use the diopter adjustment (the image is fixed at -1 D, same
as the OM-1).
Thanks to Michael A. Covington"
My flip out screen doesn't work either. I think there was only one
manufacturing run where that worked ( from the secret Wyoming factory).
I have never tried the Z. 35-80 in part because I like the reach of the Tam
35-105/2.8 but the off axis astigmatism and softer corners on the wide bugs me
more than it used to.
I tried a few snipes on a 35-80 to no avail. It appears to have some secret
sauce as well.
4Ti fan, Mike
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