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Distagon 25/1,4 and a Distagon 18/2,8
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PostPosted: Sat Jan 17, 2015 4:36 pm    Post subject: Reply with quote

Bumping this great thread for anyone who missed it first time out.


PostPosted: Sat Jan 17, 2015 5:04 pm    Post subject: Reply with quote

cyrano wrote:
Bumping this great thread for anyone who missed it first time out.


My deep thanks to You for reposting, I didn't know it yet.
And it's worth reading each word & link, THX to You all!


PostPosted: Sat Jan 17, 2015 6:47 pm    Post subject: Reply with quote



BJP 1 February 1980


Last edited by Gerald on Sat Jan 17, 2015 7:25 pm; edited 1 time in total


PostPosted: Sat Jan 17, 2015 6:52 pm    Post subject: Reply with quote

Absolutely mad designs Gerald, where did you find those?


PostPosted: Sat Jan 17, 2015 6:59 pm    Post subject: Reply with quote

cyrano wrote:
Absolutely mad designs Gerald, where did you find those?

"New Developments and Trends in Photographic Optics at Zeiss" by Walter Woltche, Head of Mathematics Department, Photo Optics Division, Carl Zeiss Oberkochen - British Journal of Photography Feb. 1 1980


Last edited by Gerald on Sat Jan 17, 2015 7:26 pm; edited 1 time in total


PostPosted: Sat Jan 17, 2015 7:18 pm    Post subject: Reply with quote

The 35mm f1.4 elements and grouping is different in this schematic:
http://www.zeissimages.com/mtf/cy/Distagon1.4_35mm_e.pdf
It may be me though.....Sad

and this one:
http://www.zeiss.com/camera-lenses/en_de/camera_lenses/slr-lenses/distagont1435.html


PostPosted: Sat Jan 17, 2015 7:41 pm    Post subject: Reply with quote

All Distagons in the Woltche article use aspherical elements. Maybe they were prototypes considered unfeasible for commercial production, or were cine lenses for 35mm format, I don't know.

EDIT: I see now that Zeiss had a cine 18mm F1.2 lens. You can buy one from eBay:
http://www.ebay.com/itm/Zeiss-Arriflex-Distagon-18mm-f-1-2-T-Super-Speed-PL-Lens-For-cine-movie-Camera-/121538168881

And this lens set could be interesting for those that love fast Zeiss lenses: Very Happy

Carl Zeiss 16mm F/2 - Front and rear glass excellent condition.
Carl Zeiss MK III 25mm F/1.2 - Front and rear glass mint condition.
Carl Zeiss MK III 35mm F/1.2 - Front and rear glass mint condition.
Carl Zeiss MK III 50mm F/1.2 - Front and rear glass mint condition.
Carl Zeiss 85mm F/1.2 - Front glass excellent condition, Rear glass has tiny cleaning scratch.


http://www.ebay.com/itm/Excellent-Condition-Arri-Arriflex-Zeiss-Prime-35mm-cine-5-Lens-MIX-set-/261693964590?pt=Camera_Lenses&hash=item3cee2d012e


PostPosted: Sat Jan 17, 2015 10:03 pm    Post subject: Reply with quote

but these lenses only cover s35 (aps-c)


PostPosted: Mon Nov 06, 2017 10:52 pm    Post subject: Reply with quote

What happened to the 25mm 1.4? He have never seen samples and the guy who had them vanished right? Any news to what happened to him?


PostPosted: Tue Nov 07, 2017 1:50 pm    Post subject: Reply with quote

Many thanks for bumping up this fantastic thread. Like 1 Thank you!


PostPosted: Fri Nov 10, 2017 6:42 pm    Post subject: Reply with quote

The corresponding 1977 Zeiss patent (Fischer / Glatzel / Jahn / Zajadatz) lists twenty different examples for fast wideangles, among them some with 78° angle and a speed of f1.25, and others with up to 50° angle and f1.03.

Stephan


PostPosted: Sat Nov 11, 2017 7:57 pm    Post subject: Reply with quote

Really mindblowing thread Like 1 small