Re: 50mm Lenses

[Joe Wilensky]

I believe there's a build quality issue with the SMC-A 50/1.7 that 
doesn't exist even with the similar A 50/2 -- I probably read about 
it here, and it happened with the A 50/1.7 I owned for a while. The 
f-stop ring detents deteriorate in some way, I don't remember if it's 
because of a gear or some plastic part. But mine worsened noticeably 
while I had it; the aperture ring developing a stiff and uneven feel. 
This issue doesn't exist with the M 50/1.7, and it doesn't exist with 
the A 50/2 or the A 50/1.4. That build quality issue alone may be 
reason enough to select a different lens, despite the A 50/1.7's fine 
optical qualities.

Joe

From: "Alan Chan" <[EMAIL PROTECTED]>
Date: Thu, 29 May 2003 02:34:07 -0700
I don't think it's going to make a lot of difference. Besides, the 
1.4 doesn't perform well at wide open. You might find yourself with 
more useful shots with the 1.7.
But the 1.4 is a brighter lens, so it's easier to focus and compose 
in dim lit conditions - and it's nice to have f/1.4 even if the 
performance wide opened isn't as good as stopped down, but then... 
this is normal with all lenses. :-) The 1.4 performs way better at 
f/1.4 than the f/1.7 does. :-) :-) :-)

Best wishes
Roland
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