Pentax -F 28-80mm f/3.5-4.5 vs Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro

Both are Pentax K lenses. Here is what actually differs.

Pentax

-F 28-80mm f/3.5-4.5

f/3.5

Full specs

Sigma

18-250mm f/3.5-6.3 DC OS HSM Macro

f/3.5

Full specs

Pick the Pentax -F 28-80mm f/3.5-4.5 if

Our spec data shows no clear advantage for this lens.

Pick the Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro if

You want a wider view: 18mm vs 28mm at the wide end
You need more reach: 250mm vs 80mm at the long end

Spec differences

8 differences

Specifications that differ between the Pentax -F 28-80mm f/3.5-4.5 and the Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro
	Pentax -F 28-80mm f/3.5-4.5	Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro
Brand	Pentax	Sigma
Type	Zoom	Macro
Format	Full frame	not listed
Focal length	28-80mm	18-250mm
Filter thread	58 mm	not listed
Min focus distance	0.4 m	not listed
Optical design	12 elements / 9 groups	not listed
Image stabilization	No	not listed

2 identical specs hidden: mount, max aperture. Show all

Mount: Pentax K both
Max aperture: f/3.5 both

Our notes

Pentax -F 28-80mm f/3.5-4.5

A 28-80mm f/3.5-4.5 standard zoom lens, the Pentax -F 28-80mm f/3.5-4.5 is designed for Pentax K mount bodies. The range covers everything from wide scenes to portraits, so it works as a general-purpose lens.

Our notes

Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro

Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro: an APS-C macro zoom lens with a 18-250mm focal length and a maximum aperture of f/3.5-6.3, made for Pentax K mount cameras, with Optical Stabilizer and Hyper Sonic Motor autofocus. A high-ratio walk-around zoom for APS-C cameras.