Series 1 28-105mm f/2.8-3.8 VMC

28-105mm
f/2.8
Zoom

Quick answer

The Vivitar Series 1 28-105mm f/2.8-3.8 VMC is a wide-angle to short telephoto zoom lens covering 28-105mm at f/2.8 for the Pentax K mount. Its bright maximum aperture handles indoor and evening light reasonably well.

About this lens

Vivitar Series 1 28-105mm f/2.8-3.8 VMC: a standard zoom lens with a 28-105mm focal length and a maximum aperture of f/2.8-3.8, made for Pentax K mount cameras. The range covers everything from wide scenes to portraits, so it works as a general-purpose lens.

Vivitar Series 1 28-105mm f/2.8-3.8 VMC specifications

Brand: Vivitar
Mount: Pentax K
Focal length: 28-105mm
Maximum aperture: f/2.8
Lens type: Zoom

What can you shoot with the Vivitar Series 1 28-105mm f/2.8-3.8 VMC?

At 28-105mm this is a wide-angle to short telephoto zoom, which typically suits:

Landscapes and cityscapes
Street and travel photography
Environmental portraits and interiors
Everyday and street photography
Natural-perspective portraits

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. Not measured.

Sensor	Crop	Equivalent	Horizontal FOV	Diagonal FOV
Full frame	1.0x	28–105mm	19.5–65.5°	23.3–75.4°
APS-C	1.5x	42–158mm	13–46.4°	15.6–54.5°

Try the field-of-view calculator

Frequently asked questions

What mount does the Vivitar Series 1 28-105mm f/2.8-3.8 VMC use?

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

What is the focal length of the Vivitar Series 1 28-105mm f/2.8-3.8 VMC?

It zooms across 28-105mm with a maximum aperture of f/2.8. That makes it a wide-angle to short telephoto lens.

Is the Vivitar Series 1 28-105mm f/2.8-3.8 VMC a prime or a zoom lens?

It is a zoom lens covering 28-105mm, so you can reframe without moving. Its maximum aperture is f/2.8.

What is the Vivitar Series 1 28-105mm f/2.8-3.8 VMC equivalent on a crop sensor?

On APS-C (1.5x crop) it frames like 42–158mm on full frame, with a 13–46.4° horizontal and 15.6–54.5° diagonal field of view. These figures are calculated from the focal length and crop factor.