photo:olympusom500mm
Olympus OM 500mm f/8.0 mirror lens
introduction
this super telephoto lens introduced in 1982 is a catadioptric mirror lens, and as with all such
mirror lenses, share the following characteristics:
the Olympus OM model is well recognised as being optically among the best made for 35mm cameras
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in 1982 it was priced at $A620 which was more expensive than the OM 300mm f/4.5, just a touch cheaper than the 35mm shift lens and half the price of the OM 400mm f/6.3 lens.
specs
500mm focal length and field of view (5°) at infinity focus (but gradually changes to 320mm when closer focus at 4m - this may be an issue with cameras where you need to set a focal length for the
image stabiliser to work optimally)
fixed f/8.0 aperture
5 elements in 2 groups (multicoated)
closest focus 4m which gives 19cm x 28cm (7.5“ x 11.0”) field of image
72mm filter thread but mount turns when you focus
built-in sun-shade / lens hood
81mm diameter, 97mm long and 590g (compare this with 255mm and 1.3kg for a 400mm refractor style lens)
if using on an OM SLR, the f/8 dim image is best managed by using a Type 1-4 focusing screen
reviews
photo/olympusom500mm.txt · Last modified: 2014/05/15 13:41 by gary1