I do have the F* 300mm ED(IF) & I love it & agree it
is one of the best. It works well with the 1.4x-S
converter, but it can be a pain to focus manually
(f6.3). I'm a little spoiled by AF.

Perhaps I should look at the old Tamron SP f4 with a
1.4x, or bite the bullet and get the FA* 300mm f2.8
with the 2X-L converter...

Pentax PLEASE make a 400mm f4 ED(IF)!

Thanks for your help!

Peter



--- David Mann <[EMAIL PROTECTED]> wrote:
> Peter Jansen wrote:
> 
> > Does anyone have experience with the FA* 400mm
> f5.6 ED
> > (IF) lens (for 35mm)? How does the quality compare
> to
> > the FA* 300mm f4.5 ED (IF)? How about with the A
> > 1.4X-S converter?
> 
> I have the FA*400mm f/5.6 and the F*300mm f/4.5
> (optically identical to 
> the FA*).  I haven't used either with a convertor so
> I can't comment 
> about that.
> 
> My sample of the 400mm isn't quite as sharp as I'd
> like, although I may 
> be expecting a bit much.  I want to do some more
> testing before I start 
> drawing concrete conclusions.  However it is
> definitely sharper than the 
> manual focus Tokina SL 400mm f/5.6 that it replaced.
> 
> The F*300mm f/4.5 is an incredible lens.  If you
> have the FA* 300mm 
> already I'd advise trying it with the TC, if AF is
> not required.
> 
> In fact, my 300mm is so much better than my 400 that
> I've been giving a 
> little thought to selling the 400mm.  If you're
> interested, twist my arm 
> a bit and I'll shoot some sample slides for you,
> while deciding whether 
> or not I really need to keep it.
> 
> Cheers,
> 
> - Dave
> 
> http://www.digistar.com/~dmann/
> 
> 


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