Does anyone know the angle of view on either of these lenses. Thanks in advance-Pat

-- Pat Johnson (pjohnson@img.net), August 07, 1999

Answers

Pat: Assuming an effective 6x7 negative format of 56x69.5mm, one obtains the following angle of views:

45mm: vertical: 63.8 degrees (= 19.3mm lens for 24x36mm) horizontal: 75.4 degrees (= 23.3mm lens for 24x36mm) diagonal: 89.5 degrees (= 21.8mm lens for 24x36mm)

55mm: vertical: 54.0 degrees (= 23.6mm lens for 24x36mm) horizontal: 64.6 degrees (= 28.5mm lens for 24x36mm) diagonal: 78.1 degrees (= 26.7mm lens for 24x36mm)

-- Joachim Inkmann (Joachim.Inkmann@uni-konstanz.de), August 07, 1999.

According to Pentax specs, the 45mm is 89 degrees and the 55mm is 78 degrees.

-- Gene Crumpler (nikonguy@worldnet.att.net), August 20, 1999.