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Compare Samyang 100mm F2.8 ED UMC Macro vs Pentax-D FA* 50mm F1.4

Construction

Aperture Blades
9 blades
9 blades
Colors
Black
Form Factor
Short Telephoto Prime Lens
Normal Prime Lens
Image Size
Full-Frame
Full-Frame
Lens Barrel
Physical aperture ring, Distance scale, DoF scale
Distance scale
Lens Mount
Canon EF-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
Ring-type ultrasonic
Optical Formula | Elements
15 elements
15 elements
Optical Formula | Groups
12 groups
9 groups
Optical Formula | Special Glass
1 HRI + 1 ED element, Ultra Multi Coating groups
1 aspherical + 3 anamalous dispersion elements, Aero Bright II + HD + Super Protect coatings groups

Dimensions

Filter Diameter
67 mm / 2.64 in
72 mm / 2.83 in
Size | Diameter
73 mm / 2.87 in
80 mm / 3.15 in
Size | Length
123 mm / 4.84 in
106 mm / 4.17 in
Weight
720 g / 25.44 oz
910 g / 32.16 oz

Function

Angle Of View
24.4° Diagonal | 20.4° Horizontal | 13.7° Vertical
46.8° Diagonal | 39.6° Horizontal | 27.0° Vertical
Aperture
f/2.8 ~ f/32
f/1.4 ~ f/16
Autofocus
No
Yes
Focal Length
100 mm
50 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
Yes

Performance

Max Magnification
1x
0.18x
Min Focus Distance
310 mm / 12.20 in
400 mm / 15.75 in

Production

Accessory
Lens hood included
Lens hood included
Debut
2015-04-01
2017-10-26

Reviews

Neofiliac score
59%
68%
Pros
  • 1:1 reproduction
  • Clear focusing scale
  • Bright maximum aperture
  • Weather-sealed
  • Very sharp
Cons
  • Lacks weather sealing
  • Not Samyang's strongest build
  • On the heavy side
  • Slow autofocus

Price

Offers (incl. referral links)
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