Pentax smc DA 50-200mm F4-5.6 ED vs Sigma 18-200mm f/3.5-6.3 DC OS HSM

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

Pentax

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

Our spec data shows no clear advantage for this lens.

Pick the Sigma 18-200mm f/3.5-6.3 DC OS HSM if

You need ⅓ stop more light for low light or background blur (f/3.5 vs f/4)
You want a wider view: 18mm vs 50mm at the wide end

Spec differences

11 differences

Specifications that differ between the Pentax smc DA 50-200mm F4-5.6 ED and the Sigma 18-200mm f/3.5-6.3 DC OS HSM
	Pentax smc DA 50-200mm F4-5.6 ED	Sigma 18-200mm f/3.5-6.3 DC OS HSM
Brand	Pentax	Sigma
Type	Zoom	Superzoom
Format	APS-C	not listed
Focal length	50-200mm	18-200mm
Max aperture	f/4	f/3.5 ⅓ stop faster
Weight	272 g	not listed
Length	80 mm	not listed
Diameter	69 mm	not listed
Filter thread	49 mm	not listed
Min focus distance	1.1 m	not listed
Image stabilization	No	not listed

1 identical spec hidden: mount. Show all

Mount: Pentax K 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

Sigma 18-200mm f/3.5-6.3 DC OS HSM

The Sigma 18-200mm f/3.5-6.3 DC OS HSM is an APS-C superzoom lens covering 18-200mm at f/3.5-6.3 for Pentax K mount cameras, with Optical Stabilizer and Hyper Sonic Motor autofocus. A high-ratio walk-around zoom for APS-C cameras.