i have never had a c/y one, but if mtf curves (from photodo and zeiss) are any indication, c/y 50/1.4 wide open should be about as sharp wide open as pentax 50/1.7, which is quite a bit sharper than pentax 50/1.4 (also wide open)
stopped down (beyond f/2.8) they are probably indistinguishable but that's only my speculation at this point. best, mishka On 1/18/06, P. J. Alling <[EMAIL PROTECTED]> wrote: > The C/Y lens was not that much sharper than the Takumar. I know that > from personal experience. I worked with a photographer who had one, > while I had a SMC Pentax M f1.4. I got to print enlargements from both, > and I didn't see a noticeable difference under similar lighting that > is. Additionally the Takumar isn't noticeably different from the Pentax > in practice. I have found lens reputations to be highly suspect. The > less common the lens the more likely the reputation is to be > exaggerated., (kind of like beers actually). Very few fast lenses are > very sharp wide open. It certainly wouldn't justify the difference in cost. > > Adam Maas wrote: > > > Why don't you expect it to be sharp wide open? The C/Y mount version > > was known for it's sharpness, even wide open. > > > > -Adam > > > > > > > > P. J. Alling wrote: > > > >> Lets assume that we're discussing the SMC Takumar 50 f1.4. It's very > >> available, very reliable, easly repairable, and not particularly > >> expensive,. I would guess that for the cost of one of the new Zeiss > >> f1.4 50mm M42 lenses you could probably buy 5 or 6 of them. The only > >> reason anyone would want the Zeiss, given the alternative, would be > >> if it were exceptionaly sharp wide open, something I don't expect to > >> be true. > >> > >> Kostas Kavoussanakis wrote: > >> > >>> On Wed, 18 Jan 2006, Juan Buhler wrote: > >>> > >>>> Exactly. Who cares how long ago it was made, if it is cheaper and most > >>>> probably better? > >>> > >>> > >>> > >>> > >>> How available is it, though? Who can service it and with what parts? > >>> > >>> Kostas > >>> > >>> > >> > >> > > > > > > > -- > When you're worried or in doubt, > Run in circles, (scream and shout). > >
