Originally posted by pathdoc That would be a very, VERY subspecialised piece of glass,and I don't think you'd find too many people lining up to buy it solely for its design purpose. How do you find it performs as a general-use telephoto? I ask because I bought the 100WR macro for work and found the FOV too tight for some things, so I went to the other extreme and got the DA35/2.8 Limited (which suits perfectly). Now the 100 sees use photographing the occasional slimy thing my kids catch on nature walks and as a wet-weather telephoto lens until I get a WR zoom to complement it.
I use my old, MF 200 ED macro for the vast majority of field macro work, only sometimes switching to a 90mm Tokina f2.5 macro, another excellent lens. I suspect Digitalis similarly uses the FA 200 macro for field work, especially insects. Not sure which of these lenses has better IQ, as I've never seen a side-by-side review or comparison. The quality I get is limited by my technique at the point of releasing the shutter, not the lens. Focusing is extremely critical and a common cause of unsatisfactory results, with camera-induced vibration being second.
In my "studio" (= the basement) 200mm is too long. There I use a variety of lenses: 50mm 2.8 SMCA macro; 35mm f2.8 macro; bellows Takumar reversed on 200mm SMCA; several enlarging lenses (best is a 50mm APO Componon); several microscope objectives (most versatile is a 3X Nikon designed for microphotography, but best resolution is a 4X APO Nikkor if it's within the intended magnification range).