Originally posted by RICHARD L. 
Great idea ! I have a few 67 lenses that would fit the bill (75 mm f/2.8 AL, 90 mm f/2.8, 105 mm f/2.4 and 165 mm f/2.8) and some 645 lenses too (45 mm f/2.8, 55 mm f/2.8, 75 mm f/2.8). I almost never shoot wide-open though, is using wide apertures one of the criteria of this "New Club" ? I think only the 67 105 mm f/2.4 is impressive at wide apertures, all the others are at their worst.
Regards
Hi Richard. I am OP on this club, so will try to speak to your question about shooting apertures. The original intent of the club, in fact, was to show what P645 and P67 lens are capable of at f 2.8 or even wider, such as f 2.4 for the P67 105mm. On the other hand, since more broadly speaking the intent has to do with fast lens capabilities, in my view it would be quite legitimate to post photos of smaller aperture when the intent is comparison, i.e., comparing what one specific lens is capable of at f 2.8 vs f 8.0, or say to compare the performance of a particular lens at f 2.8 to demonstrate that it is better (or worse) than some other lens that is stopped down, or which does not open as wide as f 2.8. One might compare the P67 55/4 with the P67 75/2.8 at the largest aperture of both lenses, as another example. In other words, since the Club is concerned with fast medium format lenses with apertures of f 2.8 or better, just about any photo from any medium format lens would be appropriate within the context of a post that in some manner is concerned with fast medium format lenses. At some point, I will likely post photos from my fairly extensive Mamiya 645-C lens collection, and these I will have to present in a full-frame context since they re not adaptable to Pentax medium format cameras because of incompatible registry distances.
These are just my own musings, presented with not intent of being mandatory or even prescriptive, and you may well have other equally valid views. I do look forward to our exchanges. I have most of the P645 lenses, in AF and often non-AF versions, except for the 25mm and a few of the telephotos of greater than 400mm, and I am also lacking the two shortest zooms (28-45 and 33-55). I also have at least one version of all the P67 lenses except the 35/4.5 fisheye and some of the longest telephotos beyond 300mm.
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