Longhorn lenses: 400mm Pentax 67 f4 vs 350mm Hasselblad C f5.6?

[lowep]

I am looking for a long lens to mount via an adapter on my Contax 645 MFDB system to photograph wildlife and am having a hard time deciding which is "best" given that price for a preloved 400mm Pentax 67 SMC Takumar f4 & 350mm Hasselblad C f5.6? is about the same.

Is the optics & coating of the Hasselblad 350mm lens superior to the Pentax lens 400mm?

What difference does weight and size of these two lenses make when photographing from a heavy duty car window mount like the Kirk WM2?

Is the 1-stop advantage of the Pentax (f4 compared to f5.6) and the fact that the coverage of the Pentax is 67 likely to make much difference?

Your advice most welcome!

[Ellis Vener]

It has been at least 12 years since I last shot with a Pentax 67 system but when I shot with both a P'67 and a Hasselblad in the late '90s the Super Takumars were every bit as good as and sometimes better than  the Zeiss CF lenses.

[lowep]

thanks Ellis, tips like this from somebody with experience like yours are invaluable

[ErikKaffehr]

Hi,

The Pentax ED lenses are said to be excellent.

Best regards
Erik

I am looking for a long lens to mount via an adapter on my Contax 645 MFDB system to photograph wildlife and am having a hard time deciding which is "best" given that price for a preloved 400mm Pentax 67 SMC Takumar f4 & 350mm Hasselblad C f5.6? is about the same.

Is the optics & coating of the Hasselblad 350mm lens superior to the Pentax lens 400mm?

What difference does weight and size of these two lenses make when photographing from a heavy duty car window mount like the Kirk WM2?

Is the 1-stop advantage of the Pentax (f4 compared to f5.6) and the fact that the coverage of the Pentax is 67 likely to make much difference?

Your advice most welcome!

[lowep]

Ignoring for a moment the spurious consideration of convenience (ie what is humanly doable without hiring Lance Armstrong as a consultant), would not the synchro-compur shutter in the 350mm Hassy C lens be more helpful than the in-body focal plane shutters most other lenses in this class rely on when it comes to combatting the risk of camera shake that can ruin a lot of otherwise superb shots when working with old bazookas like these, even on a tripod?

[ErikKaffehr]

Hi,

Can you use the leaf shutter in the lens when it is adopted to your Contax?


Best regards
Erik

Ignoring for a moment the spurious consideration of convenience (ie what is humanly doable without hiring Lance Armstrong as a consultant), would not the synchro-compur shutter in the 350mm Hassy C lens be more helpful than the in-body focal plane shutters most other lenses in this class rely on when it comes to combatting the risk of camera shake that can ruin a lot of otherwise superb shots when working with old bazookas like these, even on a tripod?

[lowep]

Errr.... nope!  

How about B mode and a bowler hat?

Or a lens support something like this Manfrotto 293 telephoto lens support that is a clever concept but according to the specs can only handle a max weight of 2.5kg that is not enough. Alternative suggestions for telephoto lens support systems welcome particularly if it does not cost more than the camera?