Sigma
18-250mm f/3.5-6.3 DC OS HSM Pentax-k
 vs
Sigma
18-200mm f/3.5-6.3 DC Pentax-k

vs

differences

Reasons to consider the Sigma 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
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
More zoom 13.9x vs 11.1x
Help
 Around 30% more zoom, giving you more flexibility for photos
Better telephoto 250 mm vs 200 mm
Help
 Around 30% more reach, less perspective distortion
Slightly more magnification 1:3.4 (0.3x) vs 1:4.4 (0.2x)
Help
 Take macro shots with subjects around 30% 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 Sigma 18-200mm f/3.5-6.3 DC Pentax-k
Slightly lighter 405 g vs 0.6 kg
Help
 Around 40% lighter
Sigma 18-200mm f/3.5-6.3 DC Pentax-k Learn more about
the Sigma 18-200mm f/3.5-6.3 DC Pentax-k

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
18-200mm f/3.5-6.3 DC Pentax-k:11.1x
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
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 18-200mm f/3.5-6.3 DC Pentax-k
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 18-200mm f/3.5-6.3 DC Pentax-k
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 much 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 18-200mm f/3.5-6.3 DC Pentax-k
Pentax SMC DA 18-135mm f/3.5-5.6 ED AL DC WR

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

Travel lens

$497
Wide maximum Has a higher max f/stop
Zoom range Has significantly smaller zoom range
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 18-200mm f/3.5-6.3 DC Pentax-k
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 18-200mm f/3.5-6.3 DC Pentax-k
Pentax SMC DA 50-200mm f/4-5.6 ED WR

Pentax SMC DA 50-200mm f/4-5.6 ED WR

Wildlife lens

$197
Zoom range Has way more smaller zoom range
Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 18-200mm f/3.5-6.3 DC Pentax-k
Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Macro lens

$165
Magnification Has better macro
Min focal length Has a slightly narrower wide angle lens
Zoom range Has way more smaller zoom range
Compare the 70-300mm f/4-5.6 Di LD Macro Pentax-k vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k
Compare the 70-300mm f/4-5.6 Di LD Macro Pentax-k vs the 18-200mm f/3.5-6.3 DC Pentax-k

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
Tamron 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f

Tamron 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f

Travel lens

$649
Zoom range More zoom
Weight Slightly lighter
Magnification Slightly less magnification
Compare the 18-270mm f/3.5-6.3 Di II VC PZD Nikon-f vs the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k

Sigma 18-200mm f/3.5-6.3 DC Pentax-k Competitors

Advantages

Disadvantages
Sigma 17-70mm f/2.8-4.5 DC Macro

Sigma 17-70mm f/2.8-4.5 DC Macro

Portrait lens

$369
Magnification More magnification
Aperture Wider aperture
Zoom range Much less zoom
Max focal length Worse telephoto
Compare the 17-70mm f/2.8-4.5 DC Macro vs the 18-200mm f/3.5-6.3 DC Pentax-k
Sigma 18-200mm f/3.5-6.3 II DC OS Pentax-k

Sigma 18-200mm f/3.5-6.3 II DC OS Pentax-k

Travel lens

$499
Image stabilization Image stabilization
Lowest price Slightly more expensive
Compare the 18-200mm f/3.5-6.3 II DC OS Pentax-k vs the 18-200mm f/3.5-6.3 DC Pentax-k
Canon 100-400mm f/4.5-5.6L IS USM

Canon 100-400mm f/4.5-5.6L IS USM

Wildlife lens

$1,499
Image stabilization Image stabilization
Focus motor Has a silent focus motor
Zoom range Much less zoom
Aperture Narrower aperture
Compare the 100-400mm f/4.5-5.6L IS USM vs the 18-200mm f/3.5-6.3 DC Pentax-k

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.

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