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Compare Sigma 20mm F1.4 DG HSM vs Leica TL 18mm F2.8

Construction

Aperture Blades
9 blades, Rounded blades
Colors
Black
Silver, black
Form Factor
Ultra Wide-Angle Prime Lens
Wide-Angle Prime Lens
Image Size
Full-Frame
APS-C
Lens Barrel
Distance scale
Lens Mount
Canon EF-mount, Nikon F-mount, Sigma SA-mount, Sony E-mount, Leica L-mount
Leica L-mount
Material
Anodized aluminum
Motor
Ring-type ultrasonic
Optical Formula | Elements
15 elements
8 elements
Optical Formula | Groups
11 groups
6 groups
Optical Formula | Special Glass
Two FLD, five SLD elements + Super Multi-Layer coating groups

Dimensions

Filter Diameter
39 mm / 1.54 in
Size | Diameter
91 mm / 3.58 in
61 mm / 2.40 in
Size | Length
130 mm / 5.12 in
21 mm / 0.83 in
Weight
950 g / 33.57 oz
80 g / 2.83 oz

Function

Angle Of View
94.5° Diagonal | 84.0° Horizontal | 61.9° Vertical
77.4° Diagonal | 67.4° Horizontal | 47.9° Vertical
Aperture
f/1.4 ~ f/16
f/2.8 ~ f/16
Autofocus
Yes
Yes
Crop Factor
1.5
Focal Length
20 mm
18 mm
Focal Length (35mm Equivalent)
27.0 mm
Focus Type
Internal
Internal
Image Stabilization
No
No
Weather Resistance
No
No

Performance

Max Magnification
0.14x
0.07x
Min Focus Distance
300 mm / 11.81 in
300 mm / 11.81 in

Production

Accessory
Lens hood included
Lens hood sold separately
Debut
2015-10-16
2017-11-21
Made In
Japan
Germany

Reviews

Neofiliac score
55%
61%
Pros
  • High level of resolution
  • Bright maximum aperture
  • Compact and lightweight
Cons
  • Large and heavy
  • Lacks front filter thread
  • Lacks weather sealing
  • Lens hood not included
  • Low maximum magnification
  • Lacks weather sealing

Price

Offers (incl. referral links)
Remove
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