ULF Lens Coverage

[Michael Finder]

I am looking at two lenses for an ULF camera and am unsure of their coverage.

Can anyone offer some help please?

Taylor,Taylor and Hobson 25 inch 635 mm Series IX
Cooke Apochromatic Process Lens f10 - f128

Busch Rapid Aplanat No.6
24 inch f8 - f64
ROJA vorm. Emil Busch Rathenow

Thanks in advance.

Michael Finder
:confused:

PS Also posted on the other analog site.

[Daniel Stone]

Hi Michael,

I'm assuming you're planning on using this for work at INFINITY?

Most of the posted "max" coverage ratings are at 1:1 or more. Infinity can sometimes be very different in terms of usable image circle.

What size camera are we talking here? 11x14, 10x12, 8x20, 16x20, 20x24, bigger?

-Dan

[Michael Finder]

Hi Daniel,

I don't have the ulf camera yet (only an 8x10) so I am looking at possible lens coverage to help me decide the format.

Primarliy I want shoot portraits in a studio setting and want to know if either of these two lenses would be suitable say up to 16x20 and maybe 20x24 at portrait distances. Cheers Michael.

[Ole Tjugen]

"Portrait distance" with these film formats is really quite close to 1:1, so infinity coverage isn't needed!

The Busch Aplanat should do well, even on 20x24". So should the others, but I don't know those as well as the Aplanat.

[Michael Finder]

Thanks for the information, greatly appreciated. Cheers Michael