I would put much faith, if any, in these lens tests.

P�l




----- Original Message ----- 
From: "Kent Gittings" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, October 05, 2001 5:38 PM
Subject: RE: 43/1.9 Limited versus any Pent ax 50mm


> Then you need to figure out how they can have such a wide difference in MTF
> test results. Just because they have the same optical groups doesn't mean
> they actually have the same lenses in them. While the FA-50/1.4 overall
> rating of 4.2 is nothing to sneeze at the F-50/1.4 rating of 4.6 makes it
> just about the best 50 ever tested by Photodo. Even the F-50/1.7 tested to
> 4.4.
> While my own tests indicates that differences as much as .5 in the ratings
> are hard to tell even in blowups you have to decide on your own if what you
> have works for you.
> Wouldn't be the first time a camera maker changed glass formulations to save
> a buck or two in later generation of the same lens. Especially if you can't
> tell much difference shooting.
> Kent Gittings
> 
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of Mark Roberts
> Sent: Friday, October 05, 2001 10:32 AM
> To: [EMAIL PROTECTED]
> Subject: RE: 43/1.9 Limited versus any Pent ax 50mm
> 
> 
> -- Original Message --
> 
> >I'd go for a used SMC-F 50/1.4 as it is a little sharper than the FA
> >version.
> 
> ???
> These two lenses are identical except for cosmetics.
> 
> --
> Mark Roberts
> www.robertstech.com
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