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Sigma has introduced its new I-series of compact, premium full-frame lenses for Sony E-mount and Leica/Panasonic/Sigma’s L-mount. The 24mm F3.5, 35mm F2 and 65mm F2 DG DN | Contemporary lenses share similar designs and have weather-sealed metal bodies. All three lenses have aperture rings and by-wire manual focus dials, and are driven by stepping motors.
The 24mm F3.5 DG DN has a total of 10 elements, which include both SLD and aspherical glass. The special elements, along with Sigma’s ‘Super Multi-Layer coating’ help to reduce ghosting and flare. The 24mm F3.5 has a minimum focus distance of 11cm (4.3″) and a max magnification of 1:2 (0.5x). The lens weighs in at just 225 grams (7.9 ounces) and includes a petal-type lens hood.
Next up is the 35mm F2 DG DN. It too has 10 elements and uses SLD and aspherical glass as well as the Super Multi-Layer coating. The minimum focus distance is 27cm (11″) with the max magnification coming in at 0.18x. The lens is slightly heavier at 325g (11.5oz).
Lastly we have the 65mm F2 DG DN, which bumps the number of elements up to 12, and uses the same special elements and coatings as its shorter siblings. It has a minimum focus distance of 55cm (22″) and a maximum magnification of 0.15x. The 65mm weighs in at 405 grams (14.3oz). It comes with a metal tube-style hood.
All three lenses come with both metal lens caps that attach magnetically and with conventional plastic pinch-type lens caps. Sigma will offer a magnetic lens cap holder that’s attached to a carabiner.
The 24mm F3.5, 35mm F2 and 65mm F lenses will be available in mid-January for $ 549, $ 639 and $ 699, respectively.
Press release
SIGMA Introduces Full-Frame Mirrorless I series Premium Compact Prime Lenses
New Lenses Offer Outstanding Performance, Superior Build Quality and Elegant Design
Ronkonkoma, NY – December 1, 2020 – Today, SIGMA Corporation introduces the I series of lenses for full-frame mirrorless cameras. Pairing both for exceptional optical performance and stylish, compact design, the three new lenses – the 24mm F3.5 DG DN | Contemporary, 35mm F2 DG DN | Contemporary, and 65mm DG DN | Contemporary – join the previously released 45mm F2.8 DG DN | Contemporary to establish a new benchmark in compact performance lenses. Featuring all-metal construction for durability and cutting-edge optical designs, the I series lenses are available in L-Mount and Sony E-mount.
“When it comes to mirrorless cameras, striking the proper balance between performance and size is even more crucial. We believe there is a growing demand for compact, high-performance, high-quality lenses,” reports SIGMA America President Mark Amir-Hamzeh. “The introduction of the I series of full-frame mirrorless-exclusive lenses answers this call. The I series represents a new option: premium compact primes that are stylish in appearance with impressive specifications and optical performance.”
Built to the mechanical and operational standards of SIGMA Cine lenses, in compact mirrorless form, the I series have outstanding feel and touch in the hand. The well-damped manual focus ring, aperture ring, and autofocus switches embody true functional beauty.
The I series is being announced with 3 new lenses:
- 24mm F3.5 DG DN | Contemporary (MSRP $ 549)
- 35mm F2 DG DN | Contemporary (MSRP $ 639)
- 65mm F2 DG DN | Contemporary (MSRP $ 699)
The three new lenses will be available for sale through authorized US retailers in mid-January, 2021.
The 45mm F2.8 DG DN | Contemporary, available now (MSRP $ 549), is also part of this series.
Key I series Lens Features:
- All I series lenses feature an all-metal body, with high-precision metal internal parts, and a metal lens hood. The 24mm F3.5 is a petal-type hood.
- All I series lenses feature a manual aperture ring and knurled surfaces for an enjoyable tactile experience.
- The 35mm F2 and 65mm F2 lenses feature a newly-designed arc-type auto/manual focus mode switch.
- The 24mm F3.5, 35mm F2 and 65mm F2 lenses all feature a dust and splash-proof mount
- The three new lenses each ship with both a plastic lens cap and a magnetic metallic cap.
- An optional magnetic cap holder (model CH-11, MSRP $ 29) features a mini-carabiner for clipping to a camera bag, jacket or belt loop, and has a donut-style center hole to easily remove the cap when it is time to place it back on the lens.
Product Specifications:
SIGMA 24mm F3.5 DG DN | Contemporary
Exceptional compact wide-angle prime | 1:2 close-up magnification | Lovely round bokeh | Stepping motor | Designed to minimize flare and ghosting | Super Multi-Layer Coating
|
Lens Construction: |
10 elements in 8 groups (1 SLD, 3 aspherical) |
|---|---|
|
Autofocus Motor: |
STM |
|
No. of Diaphragm Blades: |
7 rounded |
|
Min. Focus Distance: |
4.3 in. (10.8cm) |
| Max. magnification ratio | 1:2 (half macro) |
|
Filter Size: |
55mm |
|
Dimensions (DxL): |
L-Mount: 2.5 x 1.9 in. (64 x 48.8mm) |
|
Weight: |
L-Mount: 7.9 oz. (225g) |
SIGMA 35mm F2 DG DN | Contemporary
Outstanding image quality and bokeh, compact size, perfect for everyday use.
Stepping motor | Designed to minimize flare and ghosting | Super Multi-Layer Coating
|
Lens Construction: |
10 elements in 9 groups (1 SLD, 3 aspherical) |
|---|---|
|
Autofocus Motor: |
STM |
|
No. of Diaphragm Blades: |
9 rounded |
|
Min. Focus Distance: |
10.6 in. (27cm) |
|
Max. Magnification Ratio: |
1:5.7 |
|
Filter Size: |
58mm |
|
Dimensions (DxL): |
L-Mount: 2.8 x 2.6 in. (70 x 65.4mm) |
|
Weight: |
11.5 oz. (325g) |
SIGMA 65mm F2 DG DN | Contemporary
Sharp images with beautiful bokeh | High backlight performance with thorough flare & ghosting control | Stepping motor | Designed to minimize flare and ghosting | Super Multi-Layer Coating
|
Lens Construction: |
12 elements in 9 groups (1 SLD, 2 aspherical) |
|---|---|
|
Autofocus Motor: |
STM |
|
No. of Diaphragm Blades: |
9 rounded |
|
Min. Focus Distance: |
21.7 in. (55cm) |
|
Max. Magnification Ratio: |
1:6.8 |
|
Filter Size: |
62mm |
|
Dimensions (DxL): |
L-Mount: 2.8 x 2.9 in. (72 x 74.7mm) |
|
Weight: |
14.3 oz. (405g) |
Sigma 24mm F3.5 | 35mm F2 | 65mm F2 DG DN specifications
| Sigma 24mm F3.5 DG DN | Sigma 35mm F2 DG DN | Sigma 65mm F2 DG DN | |
|---|---|---|---|
| Principal specifications | |||
| Lens type | Prime lens | ||
| Max Format size | 35mm FF | ||
| Focal length | 24 mm | 35 mm | 65 mm |
| Image stabilization | No | ||
| Lens mount | L-Mount, Sony FE | ||
| Aperture | |||
| Maximum aperture | F3.5 | F2 | |
| Minimum aperture | F22 | ||
| Aperture ring | Yes | ||
| Number of diaphragm blades | 7 | 9 | |
| Optics | |||
| Elements | 10 | 12 | |
| Groups | 8 | 9 | |
| Special elements / coatings | 1 SLD + 3 aspherical elements, Super Multi-Layer coating | 1 SLD + 2 aspherical elements, Super Multi-Layer coating | |
| Focus | |||
| Minimum focus | 0.11 m (4.33″) | 0.27 m (10.63″) | 0.55 m (21.65″) |
| Maximum magnification | 0.5× | 0.18× | 0.15× |
| 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 | 225 g (0.50 lb) | 325 g (0.72 lb) | 405 g (0.89 lb) |
| Diameter | 64 mm (2.52″) | 70 mm (2.76″) | 72 mm (2.83″) |
| Length | 49 mm (1.93″) | 65 mm (2.56″) | 75 mm (2.95″) |
| Materials | Magnesium alloy | ||
| Sealing | Yes | ||
| Colour | Black | ||
| Filter thread | 55 mm | 58 mm | 62 mm |
| Hood supplied | Yes | ||
| Tripod collar | No | ||
Articles: Digital Photography Review (dpreview.com)