Brightin Star 12mm f/2.8 vs Sigma 15mm F1.4 DC | Contemporary

Optics
Focal Length
12mm
15mm
Zoom Ratio
1x
-
Max Aperture
f/2.8
f/1.4
Min Aperture
f/16
f/16
Elements / Groups
15 / 11
13 / 11
Special Elements
2 ASPH aspherical lenses, 2 high-refractive index lenses, 2 ED lenses
1 FLD, 3 SLD, 3 aspherical
Diaphragm Blades
5
9
Max Magnification
0.15x
0.13x
Coatings
-
Water- and oil-repellent coating
Focus
Min Focus Dist.
30cm
17.7cm
Autofocus
AF Motor Type
STM
STM
Focus Method
internal
-
Full-time Manual
Distance Scale
Focus Limiter
Physical
Lens Mount
Sony E
Sony E
Weight
550 g
240 g
Dimensions (D x L)
70 x 97 mm
69 x 62.8 mm
Weather Sealing
Hood Supplied
Tripod Collar
Filter Thread
-
58 mm
Features
Image Stabilization
Power Zoom
Zoom Lock
Aperture Ring
Breathing Correction
Parfocal
Custom Buttons
0
0
Color
Black
Black
General
Launch Price
USD 425
USD 580
Sensor Format
Full Frame
APS-C
Announce Date
-
Feb 24, 2026