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Compare Samyang 10mm F2.8 ED AS NCS CS vs Pentax DA 40mm F2.8

Construction

Aperture Blades
6 blades, Manual aperture setting via lens ring
9 blades, Rounded aperture diaphragm
Colors
Black, Silver
Form Factor
Ultra Wide-Angle Prime Lens
Short Telephoto Prime Lens
Image Size
APS-C
APS-C
Lens Barrel
Physical aperture ring, Distance scale, DoF 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
Motor
Screw drive from camera
Optical Formula | Elements
14 elements
5 elements
Optical Formula | Groups
10 groups
4 groups
Optical Formula | Special Glass
2 aspherical elements, 1 ED glass element groups
High-grade multi-layer HD (High Definition) Coating groups

Dimensions

Filter Diameter
49 mm / 1.93 in
Size | Diameter
86 mm / 3.39 in
63 mm / 2.48 in
Size | Length
77 mm / 3.03 in
15 mm / 0.59 in
Weight
580 g / 20.49 oz
80 g / 2.83 oz

Function

Angle Of View
110.6° Diagonal | 100.4° Horizontal | 77.3° Vertical
39.7° Diagonal | 33.4° Horizontal | 22.6° Vertical
Aperture
f/2.8 ~ f/22
f/2.8 ~ f/22
Autofocus
No
Yes
Crop Factor
1.5
1.5
Focal Length
10 mm
40 mm
Focal Length (35mm Equivalent)
15.0 mm
60.0 mm
Image Stabilization
No
No

Performance

Max Magnification
0.13x
Min Focus Distance
250 mm / 9.84 in
400 mm / 15.75 in

Production

Accessory
Lens Hood: Integrated hood (supplied)
Lens Hood: MH-RE49 (supplied)
Debut
2013-12-06
2013-08-27

Reviews

Neofiliac score
40%
68%
Pros
  • One of the widest rectilinear lens for APS-C
  • Reasonable IQ
  • Bright f/2.8 aperture
  • Exceptionally light and compact
  • Great rendering
Cons
  • Lacks front filter thread
  • A bit expensive for a pancake lens

Price

Offers (incl. referral links)
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