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Sigma 17-40mm F1.8 DC | Art Lens vs Sigma 50mm f/1.4 CL DG

Lens

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Optics
Focal Length
17-40mm
50mm
Zoom Ratio
2.4x
-
Max Aperture
f/1.8
f/1.4
Min Aperture
f/16
f/16
Elements / Groups
17 / 11
9 / 6
Special Elements
4 FLD, 4 SLD, 2 aspherical
1 FLD, 3 Aspherical Elements
Coatings
Super Multi-Layer coating + water/oil-repellent front coating
Water and Oil Repellent Coating
Diaphragm Blades
11
14
Max Magnification
0.21x
0.15x
Optical correction & RAW development
Focus
Min Focus Dist.
28cm
45cm
Autofocus
AF Motor Type
HLA motor
RDD (Rotary Direct Drive)
Focus Method
Internal
Whole Unit Extension
Full-time Manual
Distance Scale
Focus Limiter
Physical
Lens Mount
Leica L
Leica L
Weight
535 g
375 g
Dimensions (D x L)
73 x 116 mm
65 x 54 mm
Filter Thread
67 mm
52 mm
Weather Sealing
Hood Supplied
Tripod Collar
Features
Image Stabilization
Zoom Method
Internal
-
Power Zoom
Zoom Lock
Aperture Ring
Breathing Correction
Parfocal
Custom Buttons
2
0
Color
Black
Black
General
Launch Price
USD 919
-
Announce Date
Jun 17, 2025
Oct 23, 2026
Sensor Format
APS-C
Full Frame