Originally posted by bileu Guys .. any opinions on how the 80/2.8 and 150/4 perform on modern pentax MF sensors? I have an opportunity to grab hold of older versions T* 80 and 150 lenses along with a 500CM body very cheap. There is no support system here locally to shoot MF film
but I'll be able to use the lenses on my 645Z. Any experiences or opinions and comparisons with Pentax lenses would be great.
Bileu, you're not mentioning which generation of those lenses you're talking about.
There are e.g. C/CF/CFe versions of the 80mm lens and a CB version. The latter is optically different from the former, while the former distinguish just by their mechanics, flash sync sockets, shutters, coating and light baffles which should reduce flare.
The same applies to 150mm Zeiss lenses which are available as C/CF and CFi versions. The CFi generation is the latest has the best internal light baffles to reduce flare.
You can find plenty of information at
www.hasselbladhistorical.eu.
I am using a CB80 and CFi100 lens on a Pentax 645D and like the rendering. The CB needs to be stopped down to f5.6 in order to reduce chromatic aberration, while the 150mm works almost flawless right from f4 (see my link above in this thread). I do prefer its rendering to the Pentax-A 150 f3.5. Considering weight and convenience the Pentax 150 wins with its built-in lens hood and low weight.
Comparing the CB80 to let say the Pentax-FA 75mm the situation is very similar. Convenience points go to the Pentax lens and rendering points to the Zeiss/Hasselblad lens.
You've been asking explicitly for the lens' performance of the 645z. I cannot comment on this, but using those old Hasselblad V-System lenses on a H5D-50c (probably the same sensor like in the 645z) I can tell you that these are not disappointing.
Hope this helps.
Regards, Udo