6x17 - Widest lens for 4x5

[David A. Goldfarb]

I take it you're using a 75/5.6 Super-Angulon, Ian? I had the 75/8, and it didn't cover the format, which was why I got the 75/4.5 Grandagon-N.

[Ian Grant]

David, my 75mm f8 Super Angulon covers 6x17 fine with no issues at the corners, Schneider's figures are on th e conservative side and the image circle is given as 181mm @f16 compared to 198mm @ f22 for the 5.6 version, and the Grandagon 75mm f4.5's 195mm @f22. To make the coverage of the faster lenses sound better they don't compare the same aperture

I know at least 2 others using the same 75mm f8 SA's on 6x17 with no problems, but none of us use movements.

Ian

[David A. Goldfarb]

I wonder if there are different versions with different coverage. Mine was a fairly early one, and it definitely didn't cover, and it wasn't a mechanical vignetting issue with the camera.

[tequilabong]

I purchased of Ebay from the 3c Store......Here is the link..

http://cgi.ebay.com/ws/eBayISAPI.dll...m=230268309853.

$499 plus I think $40 shipping from China....Arrived in about 7 days........

It comes with masks to do 6x14 and also 6x12...

Thanks for the help. The lens I am using is a Schneider 90mm.......Is the center filter a ND of some sort???

The focusing is tough, but by raising the standards, I can focus with the bag bellows....

[David A. Goldfarb]

A center filter is an ND grad that's darker in the center than at the edges. Usually the center is about 1.25-1.5 stops darker, but some are as dark as three stops.