Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM vs Sigma 17-70mm f/2.8-4 DC Macro OS HSM

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Pentax

smc Pentax-DA* 50-135mm f/2.8 ED IF SDM

Sigma

17-70mm f/2.8-4 DC Macro OS HSM

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Verdict at a glance

Sigma 17-70mm f/2.8-4 DC Macro OS HSM goes wider (17mm vs 50mm).
Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM reaches further (135mm vs 70mm).

Specification comparison
Spec	smc Pentax-DA* 50-135mm f/2.8 ED IF SDM	17-70mm f/2.8-4 DC Macro OS HSM
Brand	Pentax	Sigma
Mount	Pentax K	Pentax K
Type	Zoom	Macro
Focal length	50-135mm	17-70mm (wider)
Max aperture	f/2.8	f/2.8
Released	2007	n/a
Blades	9	n/a
Format	aps-c	n/a
Groups	14	n/a
Af motor	SDM	n/a
Elements	18	n/a
Weight g	685	n/a
Filter mm	67	n/a
Diameter mm	77.0	n/a
Max magnification	0.17	n/a

Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM

The Pentax smc Pentax-DA* 50-135mm f/2.8 ED IF SDM is a fast short-telephoto zoom lens covering 50-135mm at f/2.8 for Pentax K mount cameras, with extra-low dispersion glass. A premium weather-resistant "Star" series lens for Pentax K-mount cameras.

Sigma 17-70mm f/2.8-4 DC Macro OS HSM

Sigma 17-70mm f/2.8-4 DC Macro OS HSM: an APS-C macro zoom lens with a 17-70mm focal length and a maximum aperture of f/2.8-4, made for Pentax K mount cameras, with Optical Stabilizer and Hyper Sonic Motor autofocus. It is intended for close-up work with small subjects such as...

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