Sigma introduces 24mm F2 and 90mm F2.8 DG DN ‘Contemporary’ lenses
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Sigma introduces 24mm F2 and 90mm F2.8 DG DN ‘Contemporary’ lenses

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Sigma has announced a pair of lenses in its ‘I-series’ of premium compact primes: the 24mm F2 DG DN ‘Contemporary’ and 90mm F2.8 DG DN ‘Contemporary’. The lenses, designed for E- and L-mount bodies, are all-metal and feature aperture rings and weather-sealing. Both will be available later this month for $639.

The 24mm F2 DG DN has 13 elements in 11 groups, including two aspherical, one FLD (‘F low dispersion) and two SLD (‘special low dispersion’) elements. A ‘Super Multi-layer’ coating reduces flare and ghosting. The lens’ focus group is quietly driven by a stepping motor.

The minimum focus distance on the 24mm is 0.25m (9.7″), while the maximum magnification comes in at 0.15x. The lens dimension are 70x72mm for the L-mount version and 70x74mm for E-mount. They weigh 365g (12.9oz) and 360 grams (12.7oz), respectively.

The lens comes bundled with a metal hood, and both pinch-type and magnetic lens caps. The lens is threaded for 62mm filters.

The 90mm F2.8 DG DN is a bit smaller than the 24mm, but it’s also a stop slower. It has a total of 11 elements, including one aspherical and five SLD elements. As with the 24mm F2, a stepping motor is used to drive the focus unit on the 90mm.

The minimum focus distance on this lens is 0.5m (19.7″), with a max magnification of 0.2x. The dimensions of the 90mm are 64x60mm for L-mount and 64x62mm for E-mount. Both weigh just 295 grams (10.4 ounces). The 90mm uses 55mm filters.

As mentioned above, both lenses will be available in September for $639.

Sigma 24mm F2 DG DN / 90mm F2.8 DG DN specifications

Sigma 24mm F2 DG DN | C Sigma 90mm F2.8 DG DN | C
Principal specifications
Lens type Prime lens
Max Format size 35mm FF
Focal length 24 mm 90 mm
Image stabilization No
Lens mount L-Mount, Sony FE
Aperture
Maximum aperture F2 F2.8
Minimum aperture F22
Aperture ring Yes
Number of diaphragm blades 9
Optics
Elements 13 11
Groups 11 10
Special elements / coatings 1 FLD + 2 SLD + 2 aspherical elements 1 aspherical + 5 ED elements
Focus
Minimum focus 0.25 m (9.84) 0.50 m (19.69)
Maximum magnification 0.15× 0.2×
Autofocus Yes
Motor type Stepper motor
Full time manual Yes
Focus method Internal
Distance scale No
DoF scale No
Focus distance limiter No
Physical
Weight 365 g (0.80 lb) 295 g (0.65 lb)
Diameter 70 mm (2.76) 64 mm (2.52)
Length 72 mm (2.83) 60 mm (2.36)
Materials Magnesium alloy
Sealing Yes
Colour Black
Filter thread 62 mm 55 mm
Hood supplied Yes

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