The 24mm F2 DG DN 'Contemporary' and 90mm F2.8 DG DN 'Contemporary' are two new lenses in Sigma's 'I-series' of premium compact primes developed for E- and L-mount bodies. Both lenses comes with aperture rings and weather-sealing and will be available for $639 in September 2021.
Sigma 24mm F2 DG DN 'Contemporary'
The 24mm F2 DG DN is made up of 13 elements divided into 11 groups, including two aspherical, one FLD ('F low dispersion') and two SLD ('special low dispersion') elements. Flare and ghosting are reduced by a 'Super Multi-layer' coating. A stepping motor quietly drives the lens' focus group. Lens has a minimum focus distance of 0.25m (9.7ft) "), while the highest magnification is 0.15x. The dimensions and the weights of the lens are slightly different for L-mount and E-mount: 70x72mm for L-mount and 70x74mm, and 365g (12.9oz) and 360g (12.7oz) in weight, respectively.The lens comes with a metal hood as well as pinch-type and magnetic lens caps. The lens has a 62mm filter thread.
Sigma 90mm F2.8 DG DN 'Contemporary'
The 90mm F2.8 DG DN is slightly smaller and lighter than the new 24mm. It has dimensions of 64x60mm for L-mount and 64x62mm for E-mount. Both are only 295 grams (10.4 ounces). The 90mm lens takes 55mm filters. It has 11 elements in total, including one aspherical and five SLD elements. The focus unit on the 90mm is driven by a stepping motor, just like it is on the 24mm F2. This lens has a minimum focus distance of 0.5m (19.7ft) "), with a magnification of up to 0.2x.