Can anyone help with Pentax lens and are they design
formula orginal's or based on another.
Tessar's are four elements, is the M50/4 macro a four
element lens a Tessa?
The FA28-70/4 has a remarkable resemblence on MTF
curves at photodo.com to the Angeleux 28-70/2.8, I
believe the Angeleux were orginal designs.
I believe the FA50/1.4 is a standard formula with a
name?
Any others?
The FA100/3.5 Cosina?
FA28-105 (new) and FA28-200 were these orginal Tamron design's
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Regards
Richard Saunders
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