O. Simon, Dresden Hexanar 1:6,8 No 4 F = 240 m/m

[notorius]

I acquired this lens with camere few years ago. There is very little info about it on the web. AFAIK it is symmetrical anastigmat 3 + 3. I will post pictures taken with it later.
If there is anynone who can add any info, suggestions, whatever, would be apreciated.

[fabphoto73]

Here is an ad from 1910 British Journal Photographic Almanac. Looks to possibly be a 4+4 symmetrical although LVM says it's a 3+3.

[fabphoto73]

Ad for Octanar also looks to be a 4+4

[Mark J]

I was interested to see recently that Carl Zeiss had a 4+4 design in one of their early catalogues.
It must have taken an age to cement those quadruplets together accurately, using canada balsam.

[notorius]

Here is an ad from 1910 British Journal Photographic Almanac. Looks to possibly be a 4+4 symmetrical although LVM says it's a 3+3.

I could only guess, but octa and tetra is suggesting 8 or 4. Hexa = 6.

[J. Patric Dahlen]

I could only guess, but octa and tetra is suggesting 8 or 4. Hexa = 6.

That is probably correct. The Vade Mecum says that the Tetranar is a four element Gauss type. The Hexanar would be a Dagor type, and the Octanar an "improved Dagor" with eight elements. Very nice example of the Hexanar, with no scratches or separation. It should perform like when it was new!

I was interested to see recently that Carl Zeiss had a 4+4 design in one of their early catalogues.
It must have taken an age to cement those quadruplets together accurately, using canada balsam.

That is interesting. I didn't know Zeiss made one. I have two Rietzschel Linear 4+4 lenses, and the two middle elements in each group have flat surfaces, probably to simplify the manufacturing.

[Mark J]

'Double Protar', page 21 :
https://www.cameraeccentric.com/stat...fs/zeiss_3.pdf

edit : also on p.16 of the 1929 catalogue, on the same site.

[notorius]

I have tested it few years ago, images are lost somewhere. This one is first image after large format hiatus.

[arri]

Thanks for sharing. I guess it is an interesting lens, the Hexanar (nomens est omen) is a Dagor clone 3+3 design with an excellent quality. Simon were a smaller lens maker in Germany so not so much lenses were made.

[J. Patric Dahlen]

Dagor type lenses can suffer quite a lot from coma at the largre apertures, but it's also a quality some people like. Best performance should be at f:16 - 22.