Voigtlander Portrait Euryscop 7a

[brandon13]

hi,all.
i just got a no.5 lens marked III but without "A", is it truly series III or others?
if it's a III 5A lens, can it cover 11x14 format with aperture wide open or need stopped down?
last, is it a petzval type lens or not?
Attachment 130350

it was designed for 10x12 but these euryscop lenses have more coverage than advertised.

[sunhouwang]

Thanks,guys.
If not a petzval lens,any difference with the image?much sharper or something else?
And is it suitable for both wet plate and film shooting?

[goamules]

The image is rectilinear, where as Petzvals are not.

Rapid Rectilinears were invented in the 1860s for wetplate, so yes, they are suitable. If you read the answers to your questions above, you'll see they are used for both film and wetplate.