Pentax F 50mm f/1.4 is same lens of FA 50mm f/1.4 or a different glass?

[P. J. Alling]

There is no real answer, the F is older and may be more solidly built, 
the FA has advanced electronics and probably better coatings.  Being 
complex optical-mechanical systems the way they have been handled and 
simple variation from sample to sample straight from the factory will 
have the most effect on performance.  In other words you can find F 
lenses that will out preform the average FA lens and FA lenses that will 
outperform the average F lens.  That can easily color perceptions, but 
I'd get the F.

Eziocapo wrote:
> Hello friends,
>
> I know the FA 50mm. F/1.4 is same lens that the F 50mm f/1.4,
> same optical design, same otical quality and same performances,
> but a guy told me that the F is sharper and very much better than the FA.
> What's the real answer?
> Thanks.
> eziodoc
>
>
>
>   


-- 
Things should be made as simple as possible -- but no simpler.
			--Albert Einstein