HomeArticlesProductsKeywordsCompanies

Compare Samyang 12mm F2.8 ED AS NCS Fisheye vs Pentax-FA 31mm F1.8

Construction

Aperture Blades
7 blades, Circular blades
9 blades
Colors
Black
Black, silver
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-mount, Nikon F-mount, Pentax K-mount, Sony A-mount, Sony E-mount
Pentax K-mount
Material
Aluminum
Motor
Screw drive from camera
Optical Formula | Elements
12 elements
9 elements
Optical Formula | Groups
8 groups
7 groups
Optical Formula | Special Glass
2 aspherical, 3 ED, nano coating system groups
HD + Super Protect coatings groups

Dimensions

Filter Diameter
58 mm / 2.28 in
Size | Diameter
77 mm / 3.03 in
65 mm / 2.56 in
Size | Length
73 mm / 2.87 in
69 mm / 2.72 in
Weight
515 g / 18.20 oz
341 g / 12.05 oz

Function

Angle Of View
180° Diagonal (fisheye)
69.9° Diagonal | 60.3° Horizontal | 42.3° Vertical
Aperture
f/2.8 ~ f/22
f/1.8 ~ f/22
Autofocus
No
Yes
Focal Length
12 mm
31 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No

Performance

Max Magnification
0.16x
Min Focus Distance
200 mm / 7.87 in
300 mm / 11.81 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2014-11-01
2021-02-24

Reviews

Neofiliac score
40%
50%
Pros
  • 180° FOV
  • Reasonably good sunstar
  • Comes with physical aperture ring
  • Beautifully built
Cons
  • Lacks front filter thread
  • Lacks weather sealing
  • Not the sharpest
  • Only f/1.8 for the price
  • Lacks weather sealing
  • Unusual focal length

Price

Offers (incl. referral links)
Remove
Remove

Related Products

Samyang 20mm F1.8 ED AS UMC Full-Frame Lens (2016)

Samyang 20mm F1.8 ED AS UMC Full-Frame Lens (2016)

Camera Lens · Lenses
59% Neofiliac
Samyang 10mm F2.8 ED AS NCS CS APS-C Lens (2013)

Samyang 10mm F2.8 ED AS NCS CS APS-C Lens (2013)

Camera Lens · Lenses
40% Neofiliac
Samyang MF 14mm F2.8 MK2 Full-Frame Lens (2020)

Samyang MF 14mm F2.8 MK2 Full-Frame Lens (2020)

Camera Lens · Lenses
59% Neofiliac44% External
Samyang 16mm F2 ED AS UMC CS APS-C Lens (2013)

Samyang 16mm F2 ED AS UMC CS APS-C Lens (2013)

Camera Lens · Lenses
50% Neofiliac53% External
Samyang 8mm F2.8 UMC Fisheye II APS-C Lens (2014)

Samyang 8mm F2.8 UMC Fisheye II APS-C Lens (2014)

Camera Lens · Lenses
31% Neofiliac54% External
Samyang 135mm F2.0 ED UMC Full-Frame Lens (2015)

Samyang 135mm F2.0 ED UMC Full-Frame Lens (2015)

Camera Lens · Lenses
50% Neofiliac
Samyang 24mm F1.4 ED AS IF UMC Full-Frame Lens (2011)

Samyang 24mm F1.4 ED AS IF UMC Full-Frame Lens (2011)

Camera Lens · Lenses
59% Neofiliac
Samyang 35mm F1.4 AS UMC Full-Frame Lens (2010)

Samyang 35mm F1.4 AS UMC Full-Frame Lens (2010)

Camera Lens · Lenses
68% Neofiliac
Samyang T-S 24mm F3.5 ED AS UMC Full-Frame Lens (2012)

Samyang T-S 24mm F3.5 ED AS UMC Full-Frame Lens (2012)

Camera Lens · Lenses
40% Neofiliac
Samyang 100mm F2.8 ED UMC Macro Full-Frame Lens (2015)

Samyang 100mm F2.8 ED UMC Macro Full-Frame Lens (2015)

Camera Lens · Lenses
59% Neofiliac64% External
Laowa 15mm f/4 1:1 Macro Full-Frame Lens (2015)

Laowa 15mm f/4 1:1 Macro Full-Frame Lens (2015)

Camera Lens · Lenses
50% Neofiliac
Samyang 50mm F1.4 AS UMC Full-Frame Lens (2015)

Samyang 50mm F1.4 AS UMC Full-Frame Lens (2015)

Camera Lens · Lenses
59% Neofiliac52% External
Add up to 4 products to the comparison using the search bar above
Information on this page is provided on an as-is basis. No warranty on accuracy is implied. This page may contain affiliate links to third-party merchants such as Amazon and eBay. If you make a purchase using the supplied link, we may receive a commission. Neofiliac places the utmost respect for your privacy. We use no cookie whatsoever beyond that needed for the proper functioning of the website.