Quote Originally Posted by Tracy Storer View Post
A photo for reference, the late, aluminum barrel 24" RDA on top of the Apo NIkkor 610.
Ha, that is a bulky lens, but one thing that led me (halfway) down the path was that the 610/9 still isn't quite as heavy as the Nikon 600mm tele.

Vaughn--your times are interesting: with FP4+ I'm almost always having to deal with reciprocity and exposures between 30 seconds and three minutes. (Your canopy might be high, but I guess mine is thick.)

Otherwise, thanks for all the replies. One more question, what would be the process for fitting an RDA into a Sinar board assuming I don't have an universal iris clamp? I'm thinking SK Grimes might be the place to start, but any tips appreciated.