Petzval lens differences ?

[CeeBee]

Does anyone know how the portrait and projection styles of Petzval lenses differ, apart from the projection lens not having any iris/aperture ? Thanks

 

[koraks]

Doesn't the name 'Petzval' refer to the actual optical design - which therefore should fundamentally be the same across all lenses carrying the name? There are of course different focal lengths, and as you said, lenses without aperture, with an iris and slotted for Waterhouse stops, as well as lenses with a helicoid for (fine) focus adjustments. AFAIK at least - correct me if I'm wrong.

 

[abruzzi]

there is a little discussion in this thread:

Petzval vs. Projection Petzval

Hi all, I'm familiar with the kind of image a Petzval lens will make; how would the projection Petzval's images be different? Given the same maximum aperture and same focal length, are there any significant differences in the images there two lenses make? I know that the projection Petzval...

www.largeformatphotography.info

It might be helpful.

 

[cowanw]

https://antiquecameras.net/petzvallens/oldarticle.html

A discussion of Petzval lenses and their variations.

 

[Dan Fromm]

See http://www.dioptrique.info/base/i/i_petzval.HTM Inter-element spacing and radii vary. So does the glass' dispersion. Not all lenses of the Petzval design type are the same.

For a long article about Petzval and his lens design, in French, see: http://www.dioptrique.info/base/complements/petzval/petzval01.HTM.