Tamron
28-300mm f/3.5-6.3 XR Di Pentax-k
 vs
Sigma
28-300mm f/3.5-6.3 DG Macro Pentax-k

vs

differences

Reasons to consider the Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k
LensHero is not aware of any important advantages of the Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k vs the Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k.
Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k Learn more about
the Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k

Reasons to consider the Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k
LensHero is not aware of any important advantages of the Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k vs the Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k.
Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k Learn more about
the Sigma 28-300mm f/3.5-6.3 DG Macro Pentax-k

similarities

Compared to lenses

Common Strengths Common Weaknesses
Zoom range Incredible zoom Help
10.7x
Max focal length Good telephoto Help
300 mm
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Focus motor No silent focus motor Help
Louder and slower
Fixed aperture Both are variable aperture lenses Help
Narrower aperture at longer focal lengths

Compared to wildlife lenses

Common Strengths Common Weaknesses
Length Short Help
28-300mm f/3.5-6.3 XR Di Pentax-k:84 mm
28-300mm f/3.5-6.3 DG Macro Pentax-k:86 mm
Min focal length Good wide-angle Help
28 mm
Weight Light weight Help
28-300mm f/3.5-6.3 XR Di Pentax-k:420 g
28-300mm f/3.5-6.3 DG Macro Pentax-k:490 g
Lowest price Inexpensive Help
28-300mm f/3.5-6.3 XR Di Pentax-k:$389.95
28-300mm f/3.5-6.3 DG Macro Pentax-k:$299.00
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

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

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

Travel lens

$479
Image stabilization Has image stabilization
Focus motor Has a silent focus motor
Compare the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the 18-250mm f/3.5-6.3 DC OS HSM Pentax-k vs the 28-300mm f/3.5-6.3 DG Macro 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 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the SMC DA 55-300mm f/4-5.8 ED vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k
Tamron 28-200mm f/3.8-5.6 XR Di Nikon-f

Tamron 28-200mm f/3.8-5.6 XR Di Nikon-f

Travel lens
Max focal length Has a slightly longer telephoto lens
Zoom range Has significantly smaller zoom range
Compare the 28-200mm f/3.8-5.6 XR Di Nikon-f vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the 28-200mm f/3.8-5.6 XR Di Nikon-f vs the 28-300mm f/3.5-6.3 DG Macro 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
Max focal length Has a slightly longer telephoto lens
Zoom range Has significantly smaller zoom range
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the SMC DA 18-135mm f/3.5-5.6 ED AL DC WR vs the 28-300mm f/3.5-6.3 DG Macro 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

$247
Max focal length Has a slightly longer telephoto lens
Zoom range Has way more smaller zoom range
Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the SMC DA 50-200mm f/4-5.6 ED WR vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k
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
Max focal length Has a significantly longer telephoto lens
Zoom range Has way more smaller zoom range
Compare the SMC DA 18-55mm f/3.5-5.6 AL WR vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the SMC DA 18-55mm f/3.5-5.6 AL WR vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k
Sigma 18-200mm f/3.5-6.3 DC Pentax-k

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

Travel lens

$249
Max focal length Has a slightly longer telephoto lens
Compare the 18-200mm f/3.5-6.3 DC Pentax-k vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Compare the 18-200mm f/3.5-6.3 DC Pentax-k vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k

Tamron 28-300mm f/3.5-6.3 XR Di Pentax-k Competitors

Advantages

Disadvantages
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
Zoom range More zoom
Max focal length Worse telephoto
Magnification Slightly less magnification
Compare the 18-250mm f/3.5-6.3 Di-II LD IF Macro Nikon-f vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Pentax SMC DA* 300mm f/4 ED SDM

Pentax SMC DA* 300mm f/4 ED SDM

Wildlife lens

$1,397
Focus motor Has a silent focus motor
Prime lens Is a prime lens
Zoom range Much less zoom
Min focal length Much worse wide angle
Compare the SMC DA* 300mm f/4 ED SDM vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
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
Focus motor Has a silent focus motor
Image stabilization Image stabilization
Zoom range Much less zoom
Max focal length Significantly worse telephoto
Compare the 17-70mm f/2.8-4 DC Macro OS HSM Pentax-k vs the 28-300mm f/3.5-6.3 XR Di Pentax-k
Olympus M.Zuiko 75-300mm f/4.8-6.7 ED LNS

Olympus M.Zuiko 75-300mm f/4.8-6.7 ED LNS

Wildlife lens

$549
Zoom range Much less zoom
Aperture Significantly narrower aperture
Compare the M.Zuiko 75-300mm f/4.8-6.7 ED LNS vs the 28-300mm f/3.5-6.3 XR Di Pentax-k

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

Advantages

Disadvantages
Olympus M.Zuiko 75-300mm f/4.8-6.7

Olympus M.Zuiko 75-300mm f/4.8-6.7

Wildlife lens

$900
Zoom range Much less zoom
Aperture Significantly narrower aperture
Compare the M.Zuiko 75-300mm f/4.8-6.7 vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k
Tamron 28-200mm f/3.8-5.6 XR Di Pentax-k

Tamron 28-200mm f/3.8-5.6 XR Di Pentax-k

Wildlife lens

$270
Length Slightly shorter
Weight Slightly lighter
Zoom range Less zoom
Max focal length Worse telephoto
Compare the 28-200mm f/3.8-5.6 XR Di Pentax-k vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k
Tamron 28-300mm f/3.5-6.3 XR Di LD IF Macro Sony-alpha

Tamron 28-300mm f/3.5-6.3 XR Di LD IF Macro Sony-alpha

Travel lens

$419
Compare the 28-300mm f/3.5-6.3 XR Di LD IF Macro Sony-alpha vs the 28-300mm f/3.5-6.3 DG Macro Pentax-k

discussion Which do you think is better?

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