§ 03 Head to head

Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM vs Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM

Pentax 18–270mm f/3.5-6.3 has a longer reach. Sigma 18–200mm f/3.5-6.3 is 23 g lighter.

The Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM is an 18–270mm f/3.5-6.3 zoom, and the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM is an 18–200mm f/3.5-6.3 zoom. On paper the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM comes out ahead, 4 advantages to 2, but which one suits you depends on what you shoot.

01

Key differences

From manufacturer specifications

Why is the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM better than the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?

  • Longer reach (270mm vs 200mm)
  • 10 mm shorter (75.8 mm vs 86 mm long)

Why is the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM better than the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM?

  • 23 g lighter (430 g vs 453 g)
  • Focuses 10 cm closer (0.39 m vs 0.49 m)
  • Has optical image stabilization
  • Newer design (2014 vs 2012)
02

Which should you buy?

By use
  • landscape For landscape photography, the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has the edge: it is 23 g lighter to carry.
  • architecture For architecture, the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has the edge: it is 23 g lighter to carry.
  • macro For macro photography, the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has the edge: it focuses closer, down to 0.39 m.
03

Specification

16 rows · better value flagged ◆
SpecificationPentax smc DA 18-270 mm f/3.5-6.3 ED SDMSigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM
Focal length18–270mm 18–200mm
Maximum aperturef/3.5-6.3 f/3.5-6.3
Minimum aperturef/45 f/22
Lens typeZoom lens Zoom lens
FormatAPS-C APS-C
Weight453 g (15.98 oz) 430 g (15.17 oz) ◆
Dimensions89 x 75.8 mm 70.7 x 86 mm
Minimum focusing distance0.49 m (19.29 inches) 0.39 m (15.35 inches) ◆
Image stabilizationNo Yes ◆
Aperture ringNo No
Aperture blades7 7
Optical construction16 elements / 13 groups 16 elements / 13 groups
Filter size62 mm 62 mm
Lens mountPentax K Nikon F, Sony A, Pentax K, Canon EF-S
Released2012 2014
Price$799.95 launch price —
04

Size

Drawn to relative scale
  • A · Pentax
  • B · Sigma
  • 75.8 × 89 mm
  • 86 × 70.7 mm

The Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM is 10 mm longer and 23 g lighter than the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM.

05

Sample frames

Shot on each lens

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

IMGP0012
IMGP0012 by ritomo
IMGP0972-強化-NR
IMGP0972-強化-NR by ritomo
IMGP0964-強化-NR
IMGP0964-強化-NR by ritomo
IMGP0883-強化-NR
IMGP0883-強化-NR by ritomo
06

Video reviews

3 on YouTube
Video thumbnail for Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM review 1
Video thumbnail for Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM review 2
Video thumbnail for Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM review 1
07

Questions

Which is lighter, the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?
The Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM weighs 430 g, 23 g less than the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM (453 g).
Which focuses closer, the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?
The Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM focuses down to 0.39 m, against 0.49 m for the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM.
Do the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM and the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM have image stabilization?
Only the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has optical image stabilization.
Is the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM better for landscape photography?
For landscape photography, the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has the edge: it is 23 g lighter to carry.
Is the Pentax smc DA 18-270 mm f/3.5-6.3 ED SDM or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM better for architecture?
For architecture, the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM has the edge: it is 23 g lighter to carry.
08

Other comparisons