Pentax smc DA 50-200mm F4-5.6 ED vs Sigma 18-125mm f/3.8-5.6 DC OS HSM

Both are Pentax K lenses for APS-C. Here is what actually differs.

Pentax

Pick the Pentax smc DA 50-200mm F4-5.6 ED if

You need more reach: 200mm vs 125mm at the long end

Pick the Sigma 18-125mm f/3.8-5.6 DC OS HSM if

You want a wider view: 18mm vs 50mm at the wide end
You shoot handheld in dim light or video: it has optical image stabilization and the Pentax smc DA 50-200mm F4-5.6 ED does not
You shoot close-ups: it focuses down to 0.35 m vs 1.1 m

Spec differences

14 differences

Specifications that differ between the Pentax smc DA 50-200mm F4-5.6 ED and the Sigma 18-125mm f/3.8-5.6 DC OS HSM
	Pentax smc DA 50-200mm F4-5.6 ED	Sigma 18-125mm f/3.8-5.6 DC OS HSM
Brand	Pentax	Sigma
Type	Zoom	Superzoom
Focal length	50-200mm	18-125mm
Max aperture	f/4	f/3.8
Weight	272 g	not listed
Length	80 mm	not listed
Diameter	69 mm	not listed
Filter thread	49 mm	67 mm
Min focus distance	1.1 m	0.35 m closer
Max magnification	not listed	0.26×
Aperture blades	not listed	7
Optical design	not listed	16 elements / 12 groups
Autofocus motor	not listed	HSM
Image stabilization	No	Yes stabilized

2 identical specs hidden: mount, format. Show all

Mount: Pentax K both
Format: APS-C both

Our notes

Pentax smc DA 50-200mm F4-5.6 ED

A 50-200mm f/4-5.6 short-telephoto zoom lens, the Pentax smc DA 50-200mm F4-5.6 ED is designed for Pentax K mount bodies, with extra-low dispersion glass. The range suits portraits and general telephoto work.

Our notes