24" aero ektar qustion

[tyler]

I am planning on building my own ulf camera. Ive been hunting for a 24" 610mm aero ektar. Will this lens cover 24x24 at infinity and what would the bellows length need to be? Also what shutter would be compatible with that lens? Most ive found on ebay dont seem big enough.
-Tyler

[jp]

I have an aero tessar of that size. At infinity it will need around 610mm of bellows. It lights up 14x17, haven't tried 24x24. You will not likely find a shutter that big. Investigate guillotine shutters as a simple diy option if using a dark slide or lens cap is too slow.

[Dan Fromm]

Tyler, my USAF data sheets don't contain a 24 inch Aero Ektar so I can't answer your question about coverage from them. But the largest format USAF aerial cameras shot was 9" x 18", diagonal 20", and it seems that's what the 24"/6 Aero Ektar was for. 24 x 24's diagonal is 34". The lens won't cover that.

[Nodda Duma]

I think one of my AE's is the 24"/6. I can try to set up a test and check.

[David R Munson]

Asking as an interested onlooker, any chance someone could provide some photos of these lenses? Are they as huge as I'm imagining?

[Nodda Duma]

Here's a pic of mine

[tyler]

I think one of my AE's is the 24"/6. I can try to set up a test and check.

That would be awesome thanks!

[tyler]

I assume if someone has used this on a 20x24 camera with success then in theory it would cover 24x24 right?

[Tracy Storer]

I assume if someone has used this on a 20x24 camera with success then in theory it would cover 24x24 right?

Not necessarily, 24x24 is bigger than 20x24. I used to have a 600 or 610 f/6 Aero Tessar, I had to remake the front standard of the 20x24 to handle it, low contrast and murky rendition wide open, which happily, is what the client was looking for with full length figure work. I SINCERELY doubt it would have produced results that would satisfy very many near infinity on 20x24.

[tyler]

Yes i know it is. But isnt it an image circle? So if it covers 24" in a 20x24 wouldnt it also cover those 4"? Also you seem to know how i can get in contact with 20x24 studios to purchase some polaroid film.