Angle of View for a photographic lens based on image circle and focal length

Result is presented in degrees.

Contact printer
Tutorial with video for building up a photography contact printer. That can be used for large format photographs and also for UV alternative/historical processes like Van Dyke Brown, Cyanotype, Gum Dichromate, Salted Paper, Platinum/Palladium among others. […]
Finding the focal length of a lens
This is a calculator that will help you in […]
Build your 4×5″ camera back
Tutorial shows step-by-step and constructive details to make a large format camera back to work with standard film holders, sizes 4x5" and 9x12 cm. […]
Measuring lens aperture
Article explains a method for evaluating lens aperture without dismantling the lens. It can be also the basis for calculating diaphragm diameters for Waterhouse stops according to a desired apertures scale. […]
Ground Glass – do it yourself
If you ever gave up about a camera because of missing […]
Ground glass loupe, easy and useful
Quite often we want to check focus more carefully in a […]