Optical formula of the lenses Topcor RE

[francotirador]

Someone can say to me that it formulates optics they use these lenses?
Topcor RE 35/28
Topcor RE 100/2.8
Topcor RE 58/1.8
Greetings & Thanks

[blaahhi]

Don't know about the others, but the 58mm lenses (f/1.4 and f/1.8 ) are double Gauss type.

The old Topcon Super D manual lists the 1.4 as a 7 element modified Gauss type and the 1.8 as a 6 element Gauss type. It also has the diagrams for these lenses.

http://www.cameramanuals.org/pdf_files/topcon_super_d-1.pdf

Lens info can be found on page 40.

sami

[Rolf]

Perhaps you will find here few information

http://www003.upp.so-net.ne.jp/Topconclub/index.htm

[John Shriver]

Here's the 35/2.8

[John Shriver]

Here's the 100/2.8:

[estudleon]