smc Pentax-F 28mm f/2.8

28mm
f/28.0
Prime

Quick answer

The Pentax smc Pentax-F 28mm f/2.8 is a wide-angle prime lens covering 28mm at f/28.0 for the Pentax K mount. Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

About this lens

Pentax smc Pentax-F 28mm f/2.8: a wide-angle prime lens with a 28mm focal length and a maximum aperture of f/2.8, made for Pentax K mount cameras. The wide view suits landscapes, architecture and environmental shots.

Pentax smc Pentax-F 28mm f/2.8 specifications

Brand: Pentax
Mount: Pentax K
Focal length: 28mm
Maximum aperture: f/28.0
Lens type: Prime

What can you shoot with the Pentax smc Pentax-F 28mm f/2.8?

At 28mm this is a wide-angle prime, which typically suits:

Landscapes and cityscapes
Street and travel photography
Environmental portraits and interiors

Its smaller maximum aperture favours daylight shooting and keeps the lens compact.

Full-frame equivalent and field of view

Calculated from the focal length and crop factor. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	28mm	65.5°	75.4°
APS-C	1.5x	42mm	46.4°	54.5°

Try the field-of-view calculator

Frequently asked questions

What mount does the Pentax smc Pentax-F 28mm f/2.8 use?

It uses the Pentax K mount, so it fits Pentax K cameras directly.

What is the focal length of the Pentax smc Pentax-F 28mm f/2.8?

It is a fixed 28mm lens with a maximum aperture of f/28.0. That makes it a wide-angle lens.

Is the Pentax smc Pentax-F 28mm f/2.8 a prime or a zoom lens?

It is a prime lens with a fixed 28mm focal length. Primes usually open wider than zooms; this one opens to f/28.0.

What is the Pentax smc Pentax-F 28mm f/2.8 equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 42mm on full frame, with a 46.4° horizontal and 54.5° diagonal field of view. These figures are calculated from the focal length and crop factor.