I just picked up a Manhattan Optical oddity. Looked at all the usual sources (and the couple of manhattan catalogs online) and googled and came up with nothing. It's marked as a "single long focus", 5x7, f16, and No 0. It's from NY, not Cresskill so I don't know if that makes it earlier or later.

Projecting an image on the wall alongside a 12" Dagor, I make it a little it longer and much dimmer. The construction is odd- its a meniscus (cemented doublet), with a half inch fixed stop out front (around an inch or a bit more away). Directly behind the glass is another stop, around 3/4" or a bit more. the glass diameter is around 1 1/2 or a bit more. the barrel and front stop unscrew from the mount. I need to take the mount off the board to see if I can then remove the glass and it's mount. There is a knurled ring which seems to be holding the glass into its mount from the inside.

Anyone ever seen one of these? Know anything about it?

Thanks,
Dan


Untitled by Fotoguy20d, on Flickr


Untitled by Fotoguy20d, on Flickr




Untitled by Fotoguy20d, on Flickr