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Compare Pentax DA 15mm F4 vs Pentax-D FA 21mm F2.4ED

Construction

Aperture Blades
9 blades, Rounded aperture diaphragm
8 blades, Rounded diaphragm
Colors
Black, Silver
Black, Silver
Form Factor
Ultra Wide-Angle Prime Lens
Ultra Wide-Angle Prime Lens
Image Size
APS-C
Full-Frame
Lens Barrel
Distance scale, DoF scale
Distance scale, DoF scale
Lens Mount
Pentax K-mount
Pentax K-mount
Material
Aluminum
Motor
Screw drive from camera
Optical Formula | Elements
8 elements
11 elements
Optical Formula | Groups
6 groups
8 groups
Optical Formula | Special Glass
1 Hybrid aspherical element, 1 ED glass element, High-grade multi-layer HD (High Definition) Coating groups
4 ED elements, 1 Super ED element groups

Dimensions

Filter Diameter
49 mm / 1.93 in
67 mm / 2.64 in
Size | Diameter
63 mm / 2.48 in
74 mm / 2.91 in
Size | Length
40 mm / 1.57 in
89 mm / 3.50 in
Weight
189 g / 6.68 oz
416 g / 14.70 oz

Function

Angle Of View
87.8° Diagonal | 77.3° Horizontal | 56.1° Vertical
91.7° Diagonal | 81.2° Horizontal | 59.5° Vertical
Aperture
f/4 ~ f/22
f/2.4–22 ~ f/2.4–22
Autofocus
Yes
Yes
Crop Factor
1.5
Focal Length
15 mm
21 mm
Focal Length (35mm Equivalent)
22.5 mm
Focus Type
Unit
Internal
Image Stabilization
No
No
Weather Resistance
Yes

Performance

Max Magnification
0.15x
0.26x
Min Focus Distance
180 mm / 7.09 in
180 mm / 7.09 in

Production

Accessory
Lens Hood: built-in hood (supplied)
Lens hood included
Debut
2013-08-27
2021-10-21

Reviews

Neofiliac score
59%
76%
Pros
  • Exceptionally light and compact
  • Good weather resistance
  • Weather-sealed
  • Great image quality
  • 8-bladed aperture for sunstars
Cons
  • Not the highest IQ level

Price

Offers (incl. referral links)
Remove
Remove

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