Bruce wrote:
>I have both brochures in my posession and have been comparing the two >systems. It appears to me that the 67 system has a broader range of >focal lengths being both wider and longer. I am wondering about the >general optical quality between the systems. Is the 67 better or the >645 - remember we are talking about glass here, not the bodies. I doubt there are any meaningful differences in optical quality among the lenses for the two systems. All lenses are "professional" and can deliver professional result though there are lenses that are better than others. If you scan the MF newsgroups you'll see that both systems receive praise for the lenses. In particular, the zoom lenses seems to be incredibly good for what they are. For what its worth, the FA645 45-85 was tested by a German magazine as the best tested MF lens ever. It's true that the 67 system offer longer lenses than the 645 but only marginally so. The difference in 35mm system terms is 500 to 400mm. In the short end, both starts at 20mm in 35mm system terms and apart from the fish-eye lens for the 67, the 67 system doesn't really offer anything over the 645 in the wide end. The 645 system offer focal lengths from 20mm to 400mm in 35mm terms whereas the 67 offers from 22 to 500mm plus a fish-eye. Most of us had the idea when switching to medium format of going all the way to 67. However, as soon as you start using MF you'll probably start to wish to use MF as much as possible expanding the system further from what you initially planned. I believe the fundamental question is how you plan to use your MF gear. Never underestimate the size/weight factor. You really should take a look on the new 645II before you make up your mind; it feels quite different from the older model. It's also such a beauty; compact with both mirror-lock and mirror pre-fire making it a superb landscape and macro MF outfit. The dataimprinting is even neater than that of the MZ-S. P�l - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
