Field Of View Calculator

For DSLR and SLR Cameras

To find the field of view (fov) for a camera lens or telescope enter the focal length (fl) and click the calculate button. You can select or convert the fov result format in either degrees-minutes-seconds format or decimal degrees below.

Camera Type :	Canon 10D Canon 20D Canon 30D Canon 40D Canon 300D Canon 350D Canon 400D Canon 5D Canon 1D Mark II Canon 1D Mark III Canon 1Ds Mark III Film 35mm Film 645 Film 6x7 Nikon D40 Nikon D50 Nikon D70 Nikon D80 Nikon D200
Focal Length (in mm) :

X Size :
Y Size :
Sampling :	(Arcseconds per Pixel)

Display Format :

Degrees, Minutes, Seconds   Decimal

Field Of View Chart

To generate a chart of focal length vs fov enter the starting (minimum) focal length and the ending (maximum) focal length. Choose your camera type and click generate. Optionally you can set the fl increment step and output display format. A new browser window will be opened with the results.

Camera Type :	Canon 10D Canon 20D Canon 30D Canon 40D Canon 300D Canon 350D Canon 400D Canon 5D Canon 1D Mark II Canon 1D Mark III Canon 1Ds Mark III Film 35mm Film 645 Film 6x7 Nikon D40 Nikon D50 Nikon D70 Nikon D80 Nikon D200
Minimum FL (mm) :
Maximum FL (mm) :
Increment (mm) :	1 5 10 15 20 25
Display Format :	Degrees, Minutes, Seconds   Decimal

Notes

• Updated December 2007 with sensor sizes for all common Canon DLSR cameras, some Nikon cameras.

• Calculations for fov size follow the formula in Astrophotography for Amateurs, Michael Covington, 1999, page 75.

• For a list of camera models and dimensions used click here.