www.MitchellCamera.com

Hello
Anyone have any Ideas about this attachment lens with bellows, currently on GC no.798 , Mounting bracket is also
unusual ? with 50mm lens image is wide , about 15 plus pounds , lot of glass for some reason .
Artist708

That IS an interesting lens shade/cover of some type. Almost looks like it is for shooting in wet conditions?

This looks like a Dimension 150 (70 mm) format lens, aka Mitchell BFC and/or a Todd-AO fish eye. More info here:

http://www.widescreenmuseum.com/widescreen/wingto3.htm