§ 03 Head to head

Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR vs Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM

Pentax 18–135mm f/3.5-5.6 has a brighter maximum aperture. Sigma 18–200mm f/3.5-6.3 has a longer reach.

The Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR is an 18–135mm f/3.5-5.6 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 3, but which one suits you depends on what you shoot.

01

Key differences

From manufacturer specifications

Why is the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR better than the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?

  • Brighter maximum aperture (f/3.5-5.6 vs f/3.5-6.3)
  • 25 g lighter (405 g vs 430 g)
  • 10 mm shorter (76 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 18-135 mm f/3.5-5.6 ED AL [IF] DC WR?

  • Longer reach (200mm vs 135mm)
  • Focuses 1 cm closer (0.39 m vs 0.4 m)
  • Has optical image stabilization
  • Newer design (2014 vs 2010)
02

Which should you buy?

By use
  • landscape For landscape photography, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR has the edge: it is 25 g lighter to carry.
  • architecture For architecture, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR has the edge: it is 25 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 18-135 mm f/3.5-5.6 ED AL [IF] DC WRSigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM
Focal length18–135mm 18–200mm
Maximum aperturef/3.5-5.6 ◆f/3.5-6.3
Minimum aperturef/38 f/22
Lens typeZoom lens Zoom lens
FormatAPS-C APS-C
Weight405 g (14.29 oz) ◆430 g (15.17 oz)
Dimensions73 x 76 mm 70.7 x 86 mm
Minimum focusing distance0.4 m (15.75 inches) 0.39 m (15.35 inches) ◆
Image stabilizationNo Yes ◆
Weather sealingYes —
Aperture ringNo No
Aperture blades7 7
Optical construction13 elements / 11 groups 16 elements / 13 groups
Filter size62 mm 62 mm
Lens mountPentax K Nikon F, Sony A, Pentax K, Canon EF-S
Released2010 2014
04

Size

Drawn to relative scale
  • A · Pentax
  • B · Sigma
  • 76 × 73 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 25 g heavier than the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR.

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 18-135 mm f/3.5-5.6 ED AL [IF] DC WR review 1
Video thumbnail for Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR review 2
Video thumbnail for Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM review 1
07

Questions

Which lens has the brighter aperture, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?
The Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR opens to f/3.5-5.6, against f/3.5-6.3 on the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM.
Which is lighter, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM?
The Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR weighs 405 g, 25 g less than the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM (430 g).
Which focuses closer, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR 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 0.4 m for the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR.
Do the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR 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 18-135 mm f/3.5-5.6 ED AL [IF] DC WR or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM better for landscape photography?
For landscape photography, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR has the edge: it is 25 g lighter to carry.
Is the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR or the Sigma C 18-200 mm f/3.5-6.3 DC Macro OS HSM better for architecture?
For architecture, the Pentax smc DA 18-135 mm f/3.5-5.6 ED AL [IF] DC WR has the edge: it is 25 g lighter to carry.
08

Other comparisons