Carl Dietzler petzval lens info

[bracan]

Hello friends,
Does anyone have or see this lens: Carl Dietzler Wien No808.

[CCHarrison]

About 1856, Petzval made an agreement with Dietzler ( An optician from Vienna ) to produce both Petzval and Orthoscopic lenses. Dietzler passed in 1862. I would venture your lens is c. 1858/9 assuming the cut for stops is original. Dietzler also produced some parts for Voigtlander's brass tubes previous to this time period (http://books.google.com/books?id=SSM...etzval&f=false)

You can learn lots more by searching google and "petzval dietzler"

Dan

[bracan]

Thank you Dan,
I searched a lot but there is some minor information about lenses, mainly Dietzler biography.
Im curious which format cover this lens?
Measured from glass to glass about 11cm, with flange 15cm and glass diameter about 8cm.
Thanks again.
Braca

[goamules]

You own the lens, and you're asking us what the coverage is? I doubt anyone else has one!

Tip: go into dark room that has one window. Hold lens up facing the window to wall, piece of paper, or ground glass. Measure coverage.

[bracan]

You own the lens, and you're asking us what the coverage is? I doubt anyone else has one!

Tip: go into dark room that has one window. Hold lens up to piece of paper or ground glass. Measure coverage.

Yes, I know. But lens will arrive tommorow in my hands.

[Steven Tribe]

Looks very much like a convertion to WHS. This is Cabinet size.

Voigtländer cannot have been too pleased about how similar the engraving was to his. They have a good reputation. There are quite a few small Petzval makers in Vienna at this time.

[bracan]

This lens is too big for dedicated format.....or the back lenses is in not proper order.....I get focus on 6cm and diameter of front lens is 7cm?!?
Ultra fast petzval indeed.

[bracan]

Correction after right arrange of back lenses, get focus on 10cm which goes to lunatic maximum aperture of f1,4???

[goamules]

Remeasure, you're doing it wrong or some glass is missing. Your lens if it has all the glass is F3.6 to F4.0. How do I know? Experience and just looking at it.

[Steven Tribe]

Suggest you measure the focal lengths of the front achromat and rear air separated pair, separately. This will probably show which end you should be looking at more closely.