The screw is the lens release button.
Mechanically it is a piece of crap, The one I have worked for exactly
one hour, and I think I used it to make one exposure. The stop down indicator
arm bent out of alignment and is made of such cheep metal that it will not hold
it's original shape. Much of the rest of it is made of such cheep materials that
they easily bend and deform. I had to partially disassemble it to remove it from
the camera it was mounted on when it failed. I couldn't give you an optical
assessment but my opinion is "how could the Tamron be worse".
At 07:31 PM 2/12/2003 -0800, you wrote:
Today I acquired a "Soligor" auto tele converter 2X to fit Pentax-K. First question-what is the screw on the side for? Maybe to activate some kind of electrical contact?Second, is it better or worse than, the Tamron-F SP tele converter 2X KR BBAR MC7 that I already own? __________________________________________________ Do you Yahoo!? Yahoo! Shopping - Send Flowers for Valentine's Day http://shopping.yahoo.com
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