How reliable is the OM viewfinder on the OM2n for checking for pincushion
and barrel distortion on my oly lenses? All of them show some pincushion
distortion in the viewfinder.
Thanks to all who replied to my question about the Tamron 90mm macro lens.
After some tests over the weekend with tubes, close up suplementry lenses
and a Vivitar 2x converter to get 1:1, the Vivitar 2x most surprisinly came
out as the best option for flat field, sharpness across the frame and ease
of use. What a surprise as the Vivitar only has 4 elements and more glass
is being added.
Norman
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