Canon Canon FD Prime

FDn 100mm f/2.8

100mm
f/2.8
Prime
270 g
Min focus 1 m

Quick answer

The Canon FDn 100mm f/2.8 is a short telephoto prime lens covering 100mm at f/2.8 for the Canon FD mount. Its bright maximum aperture handles indoor and evening light reasonably well.

About this lens

This 100mm f/2.8 manual-focus short-telephoto prime lens from Canon fits Canon FD mount cameras. The focal length is a classic choice for portraits and details.

Canon FDn 100mm f/2.8 specifications

Brand: Canon
Mount: Canon FD
Focal length: 100mm
Maximum aperture: f/2.8
Lens type: Prime
Format coverage: full-frame
Released: 1979
Optical construction: 5 elements in 5 groups
Autofocus motor: none
Minimum focus distance: 1 m
Maximum magnification: 0.12x
Filter thread: 52 mm
Weight: 270 g
Length: 53.4 mm
Diameter: 63 mm

Specification source: en.wikipedia.org

What can you shoot with the Canon FDn 100mm f/2.8?

At 100mm this is a short telephoto prime, which typically suits:

Portraits with a flattering perspective
Events and weddings
Isolating subjects from the background

Its bright maximum aperture handles indoor and evening light reasonably well.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor (adapted mount, so sensor size depends on your camera). Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	100mm	20.4°	24.4°
APS-C	1.6x	160mm	12.8°	15.4°
Micro Four Thirds	2.0x	200mm	10.3°	12.3°

Try the field-of-view calculator

Frequently asked questions

What mount does the Canon FDn 100mm f/2.8 use?

It uses the Canon FD mount, so it fits Canon FD cameras directly and can be used on other systems through a mount adapter.

What is the focal length of the Canon FDn 100mm f/2.8?

It is a fixed 100mm lens with a maximum aperture of f/2.8. That makes it a short telephoto lens.

Is the Canon FDn 100mm f/2.8 a prime or a zoom lens?

It is a prime lens with a fixed 100mm focal length. Primes usually open wider than zooms; this one opens to f/2.8.

What is the Canon FDn 100mm f/2.8 equivalent on a crop sensor?

On APS-C (1.6x crop) it frames like 160mm on full frame, with a 12.8° horizontal and 15.4° diagonal field of view. On Micro Four Thirds (2x crop) it frames like 200mm on full frame, with a 10.3° horizontal and 12.3° diagonal field of view. These figures are calculated from the focal length and crop factor.