With regard to Dave's comments regarding use of a 300 mm lens on the Tachihara, this may not really be much of a problem.
I've been using a 12" Artar on my Tachihara quite a bit lately for landscape and scenic work, in fact I find myself using the 300mm considerably more often than a 150mm. For this sort of work, focus has never been a problem for me and I always have some bellows extension left. It is rare that I find the need to focus closer than ten feet.
The lens is front mounted on an Elgeet #3 shutter; this effectively gives me about 40mm extra extension. One could achieve the same result, obviously, with a short extension tube or, I imagine by reversing a recessed lensboard. Even this may not be needed for landscapes as the Tachihara bellows is about 330mm, if memory serves.
My point is that for the type of work common outdoors, where camera weight can become a consideration, the bellows length of the Tachihara doesn't necessarily present a difficulty.
Bookmarks