I would have to agree, the ALPA 12 TC is worthy of consideration. It is by far the best choice when zero movement, and the utmost precision is required.
Here is a link to some current USD prices on the entire ALPA 12 Range
(ALPA 12 Link).
Also, the Rodenstock APO-Sironar Digital HR 28mm f/4.5 is certainly an attractive options as well. It would offer some flexibility down the road if you ever required additional shift capability, as it features a 70mm image circle.
However, for budget consideration, the Schneider APO-Digitar 24mm f/5.6 XL is going to help keep an ALPA 12 TC outfit under $8K.
As others have indicated, a sliding back, in conjunction with a digital-specific 24mm / 28mm lens is not a great idea. Not to mention it will add a considerable amount of weight and size the this type of camera.
Regards,
Jordan Miller
Here in Denmark you can get an Alpa TC, without lens, for 1250 Euro.
If you need the finder, you can then add another 1023 Euro
If you only use it now and then, using the back for framing could be a doable compromise, it works fairly ok on the Leaf where the grid on the screen is a big help.
/A
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