>> 
>> I recently acquired the Tamron SP 180mm F2.5
>> adaptall2 lens and it's the best telephoto
>> I have ever owned (on digital). Stunning
>> fine details/detail contrast.
>> 
>> Never owned the Tamron SP 300/2.8 (there were three
>> versions of that one), but seems weird that
>> it would be a poor performer in light of
>> the 180mm being so outstanding.
>> 

BW> My experience of the CZ lenses was that some of them performed well on
BW> digital, but others didn't. For example, the 100/2.8 makro was still good,
BW> but the 85/1.4 showed a lot of purple fringing to the point that it was
BW> useless on digital. 

BW> Bob

I found the same held true with the Pentax FA*24/2 lens.  On film,
this was one of my favorite lenses - great sharpness.  But when I
went digital, this ended up being a lens I sold quickly - just didn't
perform so well.



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