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Compare Laowa 25mm f/2.8 2.5-5X Ultra Macro vs Pentax-D FA* 50mm F1.4

Construction

Aperture Blades
8 blades
9 blades
Colors
Black
Black
Form Factor
Wide-Angle Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring
Distance 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
Motor
Ring-type ultrasonic
Optical Formula | Elements
8 elements
15 elements
Optical Formula | Groups
6 groups
9 groups
Optical Formula | Special Glass
1 low-dispersion element groups
1 aspherical + 3 anamalous dispersion elements, Aero Bright II + HD + Super Protect coatings groups

Dimensions

Filter Diameter
72 mm / 2.83 in
Size | Diameter
82 mm / 3.23 in
80 mm / 3.15 in
Size | Length
65 mm / 2.56 in
106 mm / 4.17 in
Weight
400 g / 14.13 oz
910 g / 32.16 oz

Function

Angle Of View
81.8° Diagonal | 71.5° Horizontal | 51.3° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/2.8 ~ f/16
f/1.4 ~ f/16
Autofocus
No
Yes
Focal Length
25 mm
50 mm
Focus Type
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes

Performance

Max Magnification
5x
0.18x
Min Focus Distance
170 mm / 6.69 in
400 mm / 15.75 in

Production

Accessory
Lens hood sold separately
Lens hood included
Debut
2018-03-07
2017-10-26
Made In
China

Reviews

Neofiliac score
31%
68%
Pros
  • Exceptional maximum magnification
  • Optional LED ring light and tripod collar available
  • Bright maximum aperture
  • Weather-sealed
  • Very sharp
Cons
  • Not stabilized
  • No lens hood available
  • Lacks weather sealing
  • On the heavy side
  • Slow autofocus

Price

Offers (incl. referral links)
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