Angle of View Tables for Various Focal Lengths (Written By Ole Oest)

Pentax lens data manuals normally specify the angle of view of a lens as a diagonal measure, which is difficult to relate to. This table presents the horizontal angle of view for SLR lenses when used on a 35mm film camera and when used on a digital SLR with a 1.5 crop factor like the Pentax *ist D, DS, DL, K100D, or K10D.

Pentax Angle of View Chart

The following graph is a handy tool when deciding which lenses to buy.  Click it to view it in full-size.  It is a large image, so if you have a small screen, be sure to maximize your window or the image may apper distorted. (Internet Explorer: Press F11)

Pentax Angle of View Graph

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