I havent done any head to head scientific tests between
the 2 versions, but it is highly unlikely
PENTAX would have made the 2nd (newer) one larger,
heavier, & costlier to produce with the extra element
if there werent some gains in image quality. I
havent used the first one in about 10 yrs, ever
since I learned of and got the second one.
A wild guess might be better perfromance wide open???
JCO
> -----Original Message-----
> From: Keith Whaley [mailto:[EMAIL PROTECTED]]
> Sent: Saturday, September 21, 2002 7:13 AM
> To: [EMAIL PROTECTED]
> Subject: Re: SMCT 135/2.5
>
>
> Thanks, J.C.
> The unit I have must be the older version, as it's 80mm long.
> Perhaps I ought to put it on eBay and keep my eyes open for the
> later version.
> Well, vise versa, of course!
> It is SMC.
> Is the 5 element design a mediochre performer? (It's relatively new to
> me, and I haven't used it much at all.)
>
> Every time I've read a performance report about the 135 2.5, it was
> praiseworthy, and I doubt everyone who commented had the newer version.
>
> Perhaps the difference is subtle?
>
> keith whaley
