Projection lenses for 35mm cameras

[Ramiro Elena]

[Sorry, I meant "Lenses from 35mm Projectors"
I realize it might be a silly question and those "tiny projection lenses I see here are in fact from 35mm projectors". Just want to make sure they are the same thing.]

Has anyone tried these lenses on 4x5 or know anything about them?

Are there similarities with projection Petzval lenses? I've seen a few ranging between 85mm and 140mm ƒ2 or so. Brands being usually Benoist Berthiot or Hermagis. They look like regular silver projection Petzvals with both ends in black or all black.

They are listed as being for/from 35mm projectors.

[Stephane]

I have one Berthiot super-cinestar 35mm (110mm f/1.9), is not a petzval, and does not cover 4x5 at infinity. Looks like a symmetrical design, each end made of 2 air-spaced elements (I can only take the front out). One pair would be 220mm f/3.8, and would cover 4x5. If you use only the outer lens of the pair, it becomes nice and soft.

[Sevo]

The early days of 35mm projection fall into a time when triplets and Tessar types had become the dominant lens type, even more so for small formats - accordingly most older or cheaper slide projection lenses I've owned or seen were triplet derived. But early cine projection lenses often seem to have been Petzvals, for speed reasons and as cine projectors borrowed heavily from the laterna magica.

[Ramiro Elena]

Sorry for the confusing post. It makes no sense at all :$

I'll have it home tomorrow to see. I had assumed projection lenses were all Petzval designs. Good to know there are other formulas.

[Sevo]

I'll have it home tomorrow to see. I had assumed projection lenses were all Petzval designs. Good to know there are other formulas.

Petzvals were unique in sometimes being used on video tube beamers (where critical price points had to be met on a device boasting three huge lenses), more than 150 years after their invention. But that niche existence does not make them common. Essentially they were 19th century technology and their popularity dwindled rapidly within the 20th century - the resurgence of Petzvals among the pictorialists around 1900 already was a revival movement...

Sevo

[Ramiro Elena]

This is it. Seems to be a Petzval although I couldn't unscrew the back completely. The front piece was impossible to unscrew aswell but I can see some balsam separation so it's got to be a couple of lenses glued together.
It's 140mm f2.4 covering 4x5.


Here a shot of the GG.

[Stephane]

Woaw! What an image!
Are you planing to sell some lenses "a la Eddie"?

[Ramiro Elena]

Woaw! What an image!
Are you planing to sell some lenses "a la Eddie"?

Mmnah, not really. I'd like to start buying "real" lenses from now on. A Petzval for 8x10 would be nice but those are expensive and I am broke

[Ramiro Elena]