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
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
Zoom range Poor zoom Help
1x
Image stabilization No image stabilization Help
Risk of blur

competitors

Shared Competitors

Advantages

Disadvantages

Sigma 20mm f/1.8 EX DG DF RF

Sigma 20mm f/1.8 EX DG DF RF

Low light lens

$629

Aperture Has a wider aperture
Sigma 12-24mm f/4.5-5.6 EX DG ASP HSM Pentax-k

Sigma 12-24mm f/4.5-5.6 EX DG ASP HSM Pentax-k

Wide angle lens

Aperture Has a narrower aperture
Prime lens Is a zoom lens

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

$735 - $947

Aperture Wider aperture
Length Longer
Weight Slightly heavier
Fujifilm XF 14mm f/2.8 R

Fujifilm XF 14mm f/2.8 R

Lens

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

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

Wide angle lens

$280 - $349

Aperture Wider aperture
Lowest price Slightly cheaper
Auto focus Auto focus
Weight Slightly heavier
Sigma 18-35mm f/1.8 DC HSM Sony-alpha

Sigma 18-35mm f/1.8 DC HSM Sony-alpha

Low light lens

$799

Aperture Significantly wider aperture
Zoom range More zoom
Prime lens Is a zoom lens
Weight Heavier
Samyang 16mm f/2 Samsung-nx

Samyang 16mm f/2 Samsung-nx

Low light lens

$281 - $399

Aperture Significantly wider aperture
Lowest price Slightly cheaper

Pentax SMC DA 21mm f/3.2 AL Competitors

Advantages

Disadvantages

Pentax SMC  FA 43mm f/1.9

Pentax SMC FA 43mm f/1.9

Low light lens

$597 - $747

Aperture Wider aperture
Max focal length Slightly better telephoto
Min focal length Slightly worse wide angle
Pentax SMC  DA 40mm f/2.8

Pentax SMC DA 40mm f/2.8

Lens

$350

Aperture Wider aperture
Lowest price Slightly cheaper
Min focal length Slightly worse wide angle
Zeiss 21mm f/4.5 C Biogon T* ZM Leica-m

Zeiss 21mm f/4.5 C Biogon T* ZM Leica-m

Wide angle lens

$1,199

Focus motor Doesn't have a silent focus motor
Auto focus Auto focus
Sigma 30mm f/1.4 DC HSM Pentax-k

Sigma 30mm f/1.4 DC HSM Pentax-k

Low light lens

Aperture Significantly wider aperture
Weight Slightly heavier
Samsung 20mm f/2.8

Samsung 20mm f/2.8

Lens

Aperture Wider aperture

discussion Which do you think is better?

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