Darinwc
Established
I ahve a Rollei-35 with the S-Xenar lens.
Does anyone have a lens diagram?
Is this a true Xenar, more of a Tessar, or something different?
Does anyone have a lens diagram?
Is this a true Xenar, more of a Tessar, or something different?
KoNickon
Nick Merritt
You'll have to enlighten me -- I thought a Xenar essentially was a Tessar design.
There was a 5-element version of the Xenar, but by the time the Xenar was used on the Kodak Retina cameras it was back to 4 elements. The 5 element 5cm F2.8 Xenar was based on the Tessar, but split the front element into two elements of lesser power in an air-spaced group. Mine is from the 1940s. Sometimes it was called a Xenar Special, other times was just marked "Xenar". I found the 5 elements when cleaning mine.
ddutchison2
Established
Doh! I missed the "S" part of your Xenar post! S-Xenars are the 5 element version of their classic 4 element Xenar
It was Schneider's "Tessar", but the name of that formula was a trademark of Zeiss, so they had to call it something else. The Tessar formula was ubiquitous and was used by every lens maker in the world up until the late 70's, so some are better than others - Xenars, Elmars, and the Genuine Zeiss Tessars are amoung the very best of the breed.
Rollei used both Tessars and Xenars almost interchangeably depending on availability and price, and they are indistinguishable from each other.
It was Schneider's "Tessar", but the name of that formula was a trademark of Zeiss, so they had to call it something else. The Tessar formula was ubiquitous and was used by every lens maker in the world up until the late 70's, so some are better than others - Xenars, Elmars, and the Genuine Zeiss Tessars are amoung the very best of the breed.
Rollei used both Tessars and Xenars almost interchangeably depending on availability and price, and they are indistinguishable from each other.
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titrisol
Bottom Feeder
Something like:
This was the Karat-Xenar also known as Super-Xenar from the early 50s.
Image doesn't come in the forum but scroll 3/4 of thw way and there is a diagram http://www.cjs-classic-cameras.co.uk/karat/super-xenar_s.png
This was the Karat-Xenar also known as Super-Xenar from the early 50s.
Agfa Karat 12 / 2.8 cameras
Agfa Karat, camera information, photographs, collection
www.cjs-classic-cameras.co.uk
I have that lens- hacked into Leica mount.
titrisol
Bottom Feeder
Amazing! I have that lens in a Agfa Karat 12!
Just finished hacking (3d printing) cartridges for film and loaded it to take the 1st pics after CLA
Just finished hacking (3d printing) cartridges for film and loaded it to take the 1st pics after CLA