Taylor Hobson series V 6.5x8.5 eq focus 11.3 lens.

[rambling]

Does enyone know about this lens? This lens has two sets of F stops on it one is for the 11.3 in lens and also has a 17 in on side and i think that is what the other F stope is for but when you change lens around it will not focus. ramblinp@xpressweb.com

[Mark Sawyer]

The Cooke Series V is a process lens. I've never seen one with two f/stop scales. One scale should start at f/8 wide open. Where does the other scale start? And is there an indication of focal length for each scale?

[Steven Tribe]

This sounds like E**y 231079470407.
The explanation there is reasonable - but the second scale is for when you are using the rear 17" cell alone.

[Mark Sawyer]

How quickly we forget...

http://www.largeformatphotography.in...lens-questions

You need the interchangeable front element to get the 17 inch focus. I didn't know there were some barrels engraved for their use. Another interesting bit of trivia!

[Craig Tuffin]

This sounds like E**y 231079470407.
The explanation there is reasonable - but the second scale is for when you are using the rear 17" cell alone.

Yep it's mine Steven!

Thanks for the reminder Mark! I'm selling a few things off at the moment and couldn't remember all of the details (that's why it started at $29). I've updated the listing and 'borrowed' one of your attached images to give a better explanation. I never ended up using it and I only have so much room in my dehumidifying cabinet.

[rambling]

Thank you vary much for the info.

[rambling]

Thank you info. the 11.3 scale is f/8 to f/64 and 17in is f/16 to f/64

[rambling]

again thank you for the info and the images,