Hi Pentaxians
Do you know if Tamron's SP 300mm f2.8 (60B) is compatible with Pentax
DSLRs or not?
I bought one of these lenses this spring to use for wildlife photography
on my Pentax K20D and when it arrived (looking almost new) it seemed to
have sharpness issue which I was not familiar with. The images are very
soft (in an odd way) and "fringy" when the lens is used wide open and
only become sharp after about F6 or F8. I have uploaded a sample photo
at: http://www.islandlight.ca/fm087749-100-crop.jpg it is a 100% crop at
f2.8 on a tripod.
I sent the lens in to Tamron Canada who didn't fix (or find) the
problem, but fixed the mount instead. They said that if there was a
problem that they had missed (the technician hadn't actually tested it
because they had no adaptall mount on hand to test it with :( ) that no
one would fix it because it was discontinued, but indicated that the
problem was just that it wasn't designed for digital media.
Do you know anyone who has used one of these lenses on a Pentax digital?
Should I invest in sending it to Tamron USA (who said they could likely
fix it) or is it just not going to work with a digital SLR.
Thanks for your help,
Francis
--------------------------------
Island Light Photography
www.islandlight.ca
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