Process lens image circle nature

[Drew Wiley]

Yeah, Gerogons and their private-label reincarnations, were cheap lenses for compact stat cameras.

[Bernice Loui]

Maybe a single element achromat lens instead of a highly corrected process lens would do good. Many of these long focal length process lenses have been taken up by ULF folks paying !$! for them. Single element achromat could be found at modest cost at various optics surplus or hobby astronomy want-ads.


Bernice

I plan to build a camera obscura. The one where you can walk in. I plan to focus by moving the back inside the camera. I am thinking to use large photo paper and by large I mean really large like 1 meter by 60 cm or similar.

[Pere Casals]

There are dialyte type Apo-Nikkors, too.

Yes, I learned that time ago in your article http://www.galerie-photo.com/apo-pro...ikkors-en.html

[MAubrey]

Nice, this is exactly what I was looking for.

Does anybody know this about Ronars and Artars?

My APO Ronar 480mm f/9 MC projects a circle of illumination of ~800mm across.

[erian]

I ordered Goerz 30 inch F12.5 Apochromat Artar for my project. The main influence was weight and tiny bit shorter focal length. With both combined I could even hope to use this lens on my 11x14 for landscape photography (camera extends about 77 cm).