Thanks everyone, for the help. I feel confident now in creating my new LinTax...
Chris
Thanks everyone, for the help. I feel confident now in creating my new LinTax...
Chris
Hi Chris,
Pardon my reply 11 years late! In case anyone is interested, I have the adaptation Chris is after. For a Sinar F (Horseman, etc) my adapter consists of a lensboard mounted in place of the camera back. In the center of the board, an exension tube is firmly attached to the lensboard. It is an OUTER MOUNT extension tube, which will support the weight of the camera without undue stress. To those who may be confused, Pentax 67 has both inner and outer lens mounts. The latter is designed to support the weight of the camera with long lenses that have a tripod socket. With this arrangement and Adapter 645 (which accomodates outer mounts on the outside surface) you can also mount the 645 bodies. Visualize the resulting rig: it's a monster! Better have a good tripod for such a heavy rig, but it works perfectly well.
There are limitations. I can't focus at infiinity with anything shorter than a 150 mm (Fuji "W" lens), but for close shooting--with increased bellows extension--you would be okay. Bag bellows and recessed lens board would help here because the film plane is set back from the focus plane Sinar intended. In any case, a 90mm lens would not work (but might focus at infinity using a recessed board). You get full shifts and tilts. This is not a big deal for me because rise/fall/shift is what I need, and I also have the Pentax 75mm f/4.5 Shift lens. If I've got to have a WA image with shifts and tilts, my Linhoff 67 roll film holder is a better choice because it sits in the plane of the ground glass.
This is a great rig for photographing paintings in their frames, on the wall. The photographer I bought it from worked in the Yale museum doing just that, but has retired. It's also suitable for some kinds of sculpture, architectural details, and images that seem to possess immense depth of field (tilts). I differ with others, who think 6x7cm and large format are not a good combination due optimal working apertures and such. My Fujinon lenses are very sharp. They are essentially the same optical design found in Fuji 6x7, 6x9 and 6x17 panoramic cameras. Obviously, if a big mural is planned, you're better off with a large format negative, in which case 67II makes a great meter. With filter factors, bellows factors and so on, exposures will vary in accuracy. With the 67II you can do TTL metering and the distance will be exactly the same when you remove the camera and focus on ground glass.
View camera lenses have leaf-shutters, which is an improvement over 1/30th flash synch. Subject viewing is right side up and laterally unrevered, and the 67II has a particularly bright viewing system to fine tune focus. If you've got enough bellows draw, it is possible to build a remarkable rig in the telephoto department. If I had the money, I would love to attach a Nikkor or Schneider long lens, say 1200mm in length. In 6x7 format, that's a 12X magnification.
It is big and heavy, and not as practical as it might first appear, but I wouldn't wave anyone off because it's inexpensive to make the adapter, and it is a viable solution to a number of problems. In particular, tilt is very useful in general photography--but you might also want a donkey!
Hi Richard,
The last time Chris posted on this forum was 3 Feb 2002. He hasn't been here since then.
BTW, wouldn't it be simpler to use a 6x7 roll film adapter on an LF camera?
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