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Compare Laowa 25mm f/2.8 2.5-5X Ultra Macro vs Pentax-FA 31mm F1.8

Construction

Aperture Blades
8 blades
9 blades
Colors
Black
Black, silver
Form Factor
Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring
Physical aperture ring, Distance scale, DoF scale
Lens Mount
Canon EF-mount, Canon RF-mount, Leica L-mount, Nikon F-mount, Nikon Z-mount, Pentax K-mount, Sony E-mount
Pentax K-mount
Material
Aluminum
Motor
Screw drive from camera
Optical Formula | Elements
8 elements
9 elements
Optical Formula | Groups
6 groups
7 groups
Optical Formula | Special Glass
1 low-dispersion element groups
HD + Super Protect coatings groups

Dimensions

Filter Diameter
58 mm / 2.28 in
Size | Diameter
82 mm / 3.23 in
65 mm / 2.56 in
Size | Length
65 mm / 2.56 in
69 mm / 2.72 in
Weight
400 g / 14.13 oz
341 g / 12.05 oz

Function

Angle Of View
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
69.9° Diagonal | 60.3° Horizontal | 42.3° Vertical
Aperture
f/2.8 ~ f/16
f/1.8 ~ f/22
Autofocus
No
Yes
Focal Length
25 mm
31 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
No

Performance

Max Magnification
5x
0.16x
Min Focus Distance
170 mm / 6.69 in
300 mm / 11.81 in

Production

Accessory
Lens hood sold separately
Lens hood included
Debut
2018-03-07
2021-02-24
Made In
China

Reviews

Neofiliac score
31%
50%
Pros
  • Exceptional maximum magnification
  • Optional LED ring light and tripod collar available
  • Comes with physical aperture ring
  • Beautifully built
Cons
  • Not stabilized
  • No lens hood available
  • Lacks weather sealing
  • Only f/1.8 for the price
  • Lacks weather sealing
  • Unusual focal length

Price

Offers (incl. referral links)
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