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Compare Samyang 16mm F2 ED AS UMC CS vs Pentax DA 40mm F2.8

Construction

Aperture Blades
8 blades
9 blades, Rounded aperture diaphragm
Colors
Black, Silver
Form Factor
Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale
Distance scale
Lens Mount
Canon EF-M-mount, Canon EF-mount, Micro Four Thirds-mount, Fujifilm X-mount, Micro Four Thirds-mount, Nikon F-mount, Pentax K-mount, Samsung NX-mount, Sony A-mount, Sony E-mount
Pentax K-mount
Material
Metal barrel, metal mount
Motor
Screw drive from camera
Optical Formula | Elements
13 elements
5 elements
Optical Formula | Groups
11 groups
4 groups
Optical Formula | Special Glass
1 ED glass element, 1 aspheric element, 1 hybrid aspheric element groups
High-grade multi-layer HD (High Definition) Coating groups

Dimensions

Filter Diameter
77 mm / 3.03 in
49 mm / 1.93 in
Size | Diameter
83 mm / 3.27 in
63 mm / 2.48 in
Size | Length
89 mm / 3.50 in
15 mm / 0.59 in
Weight
583 g / 20.60 oz
80 g / 2.83 oz

Function

Angle Of View
84.1° Diagonal | 73.7° Horizontal | 53.1° Vertical
39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical
Aperture
f/2 ~ f/22
f/2.8 ~ f/22
Autofocus
No
Yes
Crop Factor
1.5
1.5
Focal Length
16 mm
40 mm
Focal Length (35mm Equivalent)
24.0 mm
60.0 mm
Image Stabilization
No
No

Performance

Max Magnification
0.13x
Min Focus Distance
200 mm / 7.87 in
400 mm / 15.75 in

Production

Accessory
Lens hood included
Lens Hood: MH-RE49 (supplied)
Debut
2013-06-13
2013-08-27

Reviews

Neofiliac score
50%
68%
Pros
  • A bit large for an APS-C lens
  • Exceptionally light and compact
  • Great rendering
Cons
  • Not the best grade of build
  • Not the strongest IQ
  • A bit expensive for a pancake lens

Price

Offers (incl. referral links)
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