vs

differences

Reasons to consider the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Slightly lighter 435 g vs 0.6 kg
Help
Around 30% lighter
Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k Learn more about
the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k

Reasons to consider the Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k

LensHero is not aware of any important advantages of the Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k vs the Tamron 70-300mm f/4-5.6 Di LD Macro Pentax-k.
Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k Learn more about
the Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k

similarities

Compared to lenses

Common Strengths Common Weaknesses
Max focal length Good telephoto Help
300 mm
Magnification Great zoom Help
1:2 (0.5x)
Prime lens Both are zoom lenses Help
Typically not as sharp as prime lenses
Aperture Very narrow widest aperture size Help
f/4
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 macro lenses

Common Strengths Common Weaknesses
Zoom range Great zoom Help
4.3x
Magnification Poor magnification Help
1:2 (0.5x)
Wide maximum Not very narrow apertures Help
f/22

competitors

Shared Competitors

Advantages

Disadvantages

Sigma 70-300mm f/4-5.6 DG Macro Pentax-k

Sigma 70-300mm f/4-5.6 DG Macro Pentax-k

Macro lens

$159

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

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

Wildlife lens

$397

Magnification Has worse macro
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
Magnification Has worse macro
Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

Sigma 50-200mm f/4-5.6 DC OS HSM Pentax-k

Wildlife lens

$159

Image stabilization Has image stabilization
Focus motor Has a silent focus motor
Max focal length Has a slightly longer telephoto lens
Wide maximum Has a lower max f/stop
Sigma 70-300mm f/4-5.6 DG OS Pentax-k

Sigma 70-300mm f/4-5.6 DG OS Pentax-k

Wildlife lens

$399

Image stabilization Has image stabilization
Wide maximum Has a lower max f/stop
Magnification Has worse macro
Sigma 70-300mm f/4-5.6 APO DG Macro

Sigma 70-300mm f/4-5.6 APO DG Macro

Macro lens

$199

Nikon Nikkor AF-S 55-300mm f/4.5-5.6G ED VR

Nikon Nikkor AF-S 55-300mm f/4.5-5.6G ED VR

Wildlife lens

$397

Image stabilization Has image stabilization
Focus motor Has a silent focus motor
Magnification Has worse macro

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

Advantages

Disadvantages

Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax-k

Sigma 120-400mm f/4.5-5.6 DG APO OS HSM Pentax-k

Wildlife lens

$999

Focus motor Has a silent focus motor
Image stabilization Image stabilization
Magnification Less magnification
Weight Heavier
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

Zoom range Much more zoom
Focus motor Has a silent focus motor
Magnification Less magnification
Max focal length Worse telephoto
Tamron SP 90mm f/2.8 Di Macro Pentax-k

Tamron SP 90mm f/2.8 Di Macro Pentax-k

Macro lens

$460

Prime lens Is a prime lens
Magnification Significantly more magnification
Max focal length Significantly worse telephoto
Zoom range Less zoom

Sigma 70-300mm f/4-5.6 APO DG Macro Pentax-k Competitors

Advantages

Disadvantages

Sigma 70-300mm f/4-5.6 APO DG Macro Nikon-f

Sigma 70-300mm f/4-5.6 APO DG Macro Nikon-f

Macro lens

$199

Nikon Nikkor  70-300mm f/4-5.6G

Nikon Nikkor 70-300mm f/4-5.6G

Wildlife lens

$150

Wide maximum Significantly narrower aperture
Magnification Less magnification
Sigma 300-800mm f/5.6 EX DG APO HSM Four-thirds

Sigma 300-800mm f/5.6 EX DG APO HSM Four-thirds

Wildlife lens

$6,999

Max focal length Much better telephoto
Fixed aperture Has a consant aperture
Length Much longer
Weight Much heavier
Tamron 18-200mm f/3.5-6.3 XR Di-II LD Macro Canon-ef

Tamron 18-200mm f/3.5-6.3 XR Di-II LD Macro Canon-ef

Travel lens

$199

Zoom range Much more zoom
Min focal length Better wide angle
Magnification Less magnification
Max focal length Worse telephoto

discussion Which do you think is better?

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