Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED vs Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro

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

Pentax

smc Pentax-DA 50-200mm f/4-5.6 DA ED

f/4

Full specs

Sigma

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

f/3.5

Full specs

Pick the Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED 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 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
You need more reach: 250mm vs 200mm at the long end

Spec differences

4 differences

Specifications that differ between the Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED and the Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro
	Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED	Sigma 18-250mm f/3.5-6.3 DC OS HSM Macro
Brand	Pentax	Sigma
Type	Zoom	Macro
Focal length	50-200mm	18-250mm
Max aperture	f/4	f/3.5 ⅓ stop faster

1 identical spec hidden: mount. Show all

Mount: Pentax K both

Our notes

Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED

The Pentax smc Pentax-DA 50-200mm f/4-5.6 DA ED is a short-telephoto zoom lens covering 50-200mm at f/4-5.6 for Pentax K mount cameras, with extra-low dispersion glass. The range suits portraits and general telephoto work.

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.