Sigma
18-250mm f/3.5-6.3 DC OS HSM Pentax-k
 vs
Pentax SMC
DA 18-135mm f/3.5-5.6 ED AL DC WR

vs

differences

Reasons to consider the Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Much more zoom 13.9x vs 7.5x
Help
 Around 90% more zoom, giving you more flexibility for photos
Has a silent focus motor Sigma HSM vs None
Help
 Focuses quickly and silently
Image stabilization Sigma OS vs None
Help
 Helps eliminate blur caused by small camera movements
Better telephoto 250 mm vs 135 mm
Help
 Around 90% more reach, less perspective distortion
Slightly more magnification 1:3.4 (0.3x) vs 1:4.2 (0.2x)
Help
 Take macro shots with subjects more than 20% larger in your photo
Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k Learn more about
the Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

Reasons to consider the Pentax DA 18-135mm f/3.5-5.6 ED AL DC WR
Much narrower aperture f/38 vs f/22
Help
 At its narrowest, the DA 18-135mm f/3.5-5.6 ED AL DC WR goes 1.6 f-stops narrower
Slightly lighter 405 g vs 0.6 kg
Help
 Around 40% lighter
Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR Learn more about
the Pentax DA 18-135mm f/3.5-5.6 ED AL DC WR

similarities

Compared to lenses

Common Strengths Common Weaknesses
Zoom range Incredible zoom Help
18-250mm f/3.5-6.3 DC OS HSM Pentax-k:13.9x
DA 18-135mm f/3.5-5.6 ED AL DC WR:7.5x
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Fixed aperture Both are variable aperture lenses Help
Narrower aperture at longer focal lengths

Compared to travel lenses

Common Strengths Common Weaknesses

LensHero is not aware of any interesting strengths shared by these two products.

LensHero is not aware of any interesting weaknesses shared by these two products.

competitors

Shared Competitors

Advantages

Disadvantages
Pentax SMC DA 55-300mm f/4-5.8 ED

Pentax SMC DA 55-300mm f/4-5.8 ED

Wildlife lens

$397
Zoom range Has slightly smaller zoom range
Compare the SMC DA 55-300mm f/4-5.8 ED vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the SMC DA 55-300mm f/4-5.8 ED vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k

Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k

Wildlife lens

$279
Compare the 28-300mm f/3.5-6.3 DG Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 28-300mm f/3.5-6.3 DG Macro Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

Tamron 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k

Travel lens

$290
Compare the 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 18-200mm f/3.5-6.3 XR Di-II Macro Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k

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

Wide angle lens

$449
Aperture Has a wider aperture
Zoom range Has significantly smaller zoom range
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Sigma 18-250mm f/3.5-6.3 DC Macro HSM Pentax-k

Sigma 18-250mm f/3.5-6.3 DC Macro HSM Pentax-k

Travel lens

$399
Compare the 18-250mm f/3.5-6.3 DC Macro HSM Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 18-250mm f/3.5-6.3 DC Macro HSM Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

Sigma 18-125mm f/3.8-5.6 DC OS HSM Pentax-k

Travel lens

$339
Wide maximum Has a lower max f/stop
Compare the 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 18-125mm f/3.8-5.6 DC OS HSM Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Pentax SMC DA 18-55mm f/3.5-5.6 AL II

Pentax SMC DA 18-55mm f/3.5-5.6 AL II

Wide angle lens
Max focal length Has a slightly longer telephoto lens
Zoom range Has significantly smaller zoom range
Compare the SMC DA 18-55mm f/3.5-5.6 AL II vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the SMC DA 18-55mm f/3.5-5.6 AL II vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k Competitors

Advantages

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

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

Travel lens

$349
Zoom range Less zoom
Max focal length Worse telephoto
Compare the 18-200mm f/3.5-6.3 II DC OS HSM Nikon-f vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 28-75mm f/2.8 XR Di Pentax-k

Tamron 28-75mm f/2.8 XR Di Pentax-k

Portrait lens

$499
Fixed aperture Has a consant aperture
Wide maximum Significantly narrower aperture
Zoom range Much less zoom
Focus motor Doesn't have a silent focus motor
Compare the 28-75mm f/2.8 XR Di Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Tamron 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f

Tamron 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f

Travel lens

$279
Weight Slightly lighter
Focus motor Doesn't have a silent focus motor
Image stabilization No image stabilization
Compare the 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR Competitors

Advantages

Disadvantages
Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax-k

Tamron 17-50mm f/2.8 XR Di-II LD [IF] Pentax-k

Wide angle lens

$459
Fixed aperture Has a consant aperture
Aperture Wider aperture
Zoom range Significantly less zoom
Wide maximum Wider aperture
Compare the 17-50mm f/2.8 XR Di-II LD [IF] Pentax-k vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Pentax SMC DA 17-70mm f/4 AL SDM

Pentax SMC DA 17-70mm f/4 AL SDM

Wide angle lens

$597
Fixed aperture Has a consant aperture
Focus motor Has a silent focus motor
Wide maximum Much wider aperture
Zoom range Less zoom
Compare the SMC DA 17-70mm f/4 AL SDM vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

Pentax SMC DA 18-55mm f/3.5-5.6 AL WR

Wide angle lens

$197
Magnification More magnification
Weight Slightly lighter
Wide maximum Much wider aperture
Zoom range Significantly less zoom
Compare the SMC DA 18-55mm f/3.5-5.6 AL WR vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Nikon Nikkor AF-S DX 18-105mm f/3.5-5.6G ED VR

Nikon Nikkor AF-S DX 18-105mm f/3.5-5.6G ED VR

Travel lens
Image stabilization Image stabilization
Focus motor Has a silent focus motor
Zoom range Less zoom
Max focal length Slightly worse telephoto
Compare the Nikkor AF-S DX 18-105mm f/3.5-5.6G ED VR vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR
Pentax SMC DA 21mm f/3.2 AL

Pentax SMC DA 21mm f/3.2 AL

Lens

$647
Prime lens Is a prime lens
Length Shorter
Zoom range Much less zoom
Wide maximum Much wider aperture
Compare the SMC DA 21mm f/3.2 AL vs the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

discussion Which do you think is better?

Speech is free, but discussion at LensHero is moderated! Please discuss your opinion of these lenses here, and discuss feedback for LensHero at our support community.

Showing 0 comments
“LensHero will help you cut through the sheer number of lenses out there to find the few you want to read more about”
- LifeHacker
“Finding the right lens on Lenshero is incredibly easy!”
- Revell Photography
“I am in love with LensHero.”
- Shoot from the Belly
“Kind of a little bit in love with LensHero”
- @alicetragedy
“No technical stuff whatsoever, just plain and simple questions complete with examples so that any user can understand”
- Karel Donk, Photographer
“I love that I can pull up different lenses in my price range that will fit my DSLR.”
- Jennifer Sutton
feedback and support | about | blog | privacy and legal
Copyright © 2013 by LensHero, Inc. All Rights Reserved.
Rebellion Media Technology