vs

differences

Reasons to consider the Pentax -DA 15mm f/4 ED AL

LensHero is not aware of any important advantages of the Pentax -DA 15mm f/4 ED AL vs the Pentax DA 21mm f/3.2 AL.
Pentax SMC -DA 15mm f/4 ED AL Learn more about
the Pentax -DA 15mm f/4 ED AL

Reasons to consider the Pentax DA 21mm f/3.2 AL

Wider aperture f/3.2 vs f/4
Help
At its widest, the DA 21mm f/3.2 AL captures marginally more light, 0.6 f-stops
Slightly shorter 25 mm vs 40 mm
Help
Around 40% shorter
Slightly cheaper $510.00 vs $682.66
Help
The best price we've seen is $173 cheaper (around 30% less)
Pentax SMC  DA 21mm f/3.2 AL Learn more about
the Pentax DA 21mm f/3.2 AL

similarities

Compared to lenses

Common Strengths Common Weaknesses
Prime lens Fixed focal length prime lenses Help
Typically very sharp
Length Short Help
-DA 15mm f/4 ED AL:40 mm
DA 21mm f/3.2 AL:25 mm
Max focal length Poor telephoto Help
-DA 15mm f/4 ED AL:15 mm
DA 21mm f/3.2 AL:21 mm
Focus motor No silent focus motor Help
Louder and slower
Zoom range Poor zoom Help
1x
Magnification Poor magnification Help
-DA 15mm f/4 ED AL:1:6.7 (0.1x)
DA 21mm f/3.2 AL:1:7 (0.1x)
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

Disadvantages

Pentax SMC 35mm f/2 FA AL

Pentax SMC 35mm f/2 FA AL

Low light lens

$425

Aperture Has a wider aperture
Sigma 10-20mm f/3.5 EX DC HSM

Sigma 10-20mm f/3.5 EX DC HSM

Wide angle lens

$649

Focus motor Has a silent focus motor
Length Is longer
Prime lens Is a zoom lens
Pentax SMC  DA 35mm f/2.8 Macro

Pentax SMC DA 35mm f/2.8 Macro

Macro lens

$649

Magnification Has better macro

Pentax SMC -DA 15mm f/4 ED AL Competitors

Advantages

Disadvantages

Pentax SMC  DA 14mm f/2.8

Pentax SMC DA 14mm f/2.8

Wide angle lens

$779

Aperture Wider aperture
Magnification Slightly more magnification
Length Longer
Diameter Slightly larger diameter
Rokinon 8mm f/3.5 Pentax-k

Rokinon 8mm f/3.5 Pentax-k

Fisheye lens

$299

Fisheye Fisheye lens
Aperture Wider aperture
Auto focus Auto focus
Weight Slightly heavier
Sigma 10-20mm f/3.5 EX DC HSM Pentax-k

Sigma 10-20mm f/3.5 EX DC HSM Pentax-k

Wide angle lens

Focus motor Has a silent focus motor
Aperture Wider aperture
Prime lens Is a zoom lens
Length Longer
Rokinon 14mm f/2.8 IF ED UMC Canon-ef

Rokinon 14mm f/2.8 IF ED UMC Canon-ef

Wide angle lens

$329

Aperture Wider aperture
Lowest price Slightly cheaper
Auto focus Auto focus
Weight Slightly heavier
Samyang 16mm f/2 ED AS UMC CS Canon-efm

Samyang 16mm f/2 ED AS UMC CS Canon-efm

Low light lens

$385

Aperture Significantly wider aperture
Lowest price Slightly cheaper
Weight Heavier

Pentax SMC DA 21mm f/3.2 AL Competitors

Advantages

Disadvantages

Pentax SMC  FA 31mm f/1.8

Pentax SMC FA 31mm f/1.8

Low light lens

Aperture Significantly wider aperture
Length Longer
Weight Slightly heavier
Pentax SMC 35mm DA L f/2.4 AL

Pentax SMC 35mm DA L f/2.4 AL

Low light lens

$204

Aperture Wider aperture
Lowest price Slightly cheaper
Length Slightly longer
Min focal length Slightly worse wide angle
Pentax SMC  FA 50mm f/1.4

Pentax SMC FA 50mm f/1.4

Low light lens

$702

Aperture Significantly wider aperture
Max focal length Slightly better telephoto
Min focal length Slightly worse wide angle
Length Slightly longer
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

Wide maximum Significantly narrower aperture
Zoom range More zoom
Prime lens Is a zoom lens
Length Longer
Sigma 20mm f/1.8 EX DG DF RF

Sigma 20mm f/1.8 EX DG DF RF

Low light lens

$629

Aperture Significantly wider aperture
Magnification More magnification
Length Longer
Weight Heavier

discussion Which do you think is better?

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