I need to know the image circle of the Biogon 53mm F. 4,5 How would it compare to more modern designs, any other information about this lens is appreciated.

-- Ashraf Nassef (ashrafnas@yahoo.com), September 30, 2001

Answers

From info that I have the image circle of the 53/4.5 Biogon is 115 mm diameter. It would work with medium format but not 4x5. The filter size is 67mm.

-- Jeffrey Scott (jscott@datavoice.net), September 30, 2001.

115mm far from what is needed for 4x5.

The 55mm Apo Grandagon 4.5 covers 163mm as a comparison

-- Bob Salomon (bob@hpmarketingcorp.com), October 01, 2001.

Thanks Jeffrey, Thanks Bob.

-- Ashraf Nassef (ashrafnas@yahoo.com), October 01, 2001.