voigtlander heliar 420mm/ f4.5

[pruts]

looking for the maximum imagecircle of an voigtlander heliar 420mm/ f4.5

thx

Marc / Belgium

 

[Jesper]

If you are asking about the Universal-Heliar 42cm/4.5 it is recommended for images up to 8.5"x10.5" in lens catalogue from 1964
http://www.cameraeccentric.com/html/info/voigtlander_2.html

 

[resummerfield]

Here is some interesting info from Dead Link Removed. I have a 420mm f4.5 Dynar-type Heliar that covers 8x10 with very generous movements.

 

[resummerfield]

I’ve always heard that the later Dynar-type Heliars had a 60 degree image circle, while the earlier pre-WW1 Heliars only had a 50 degree image circle. Today I had the opportunity to do a little testing, so I installed my Dynar-type Heliar on a 7x17 camera and did some measurements. At infinity focus and all movements centered, it will easily cover the 167mm x 424mm ground glass. I don’t lose the circle of illumination until I shift the back about 60mm to the side, which computes to a circle of about 544mm, or over 65 degrees.

 

[pruts]

thx for the info ...