Sigma 105mm f/2.8 DG DN Macro Art Lens (Sony E)

The Sigma 105mm f/2.8 DG DN Macro Art is a mid‑telephoto macro prime lens in Sigma’s Art series, engineered specifically for mirrorless cameras, including Sony E‑mount. It delivers true 1:1 life‑size macro reproduction, excellent optical performance, and versatile use beyond close‑up photography — suitable for portraits, nature, and detailed work.

Key Features

• True Macro Capability: 1:1 maximum magnification ratio for life‑size reproduction of small subjects.
• Fast Aperture: Bright f/2.8 maximum aperture for shallow depth of field and smooth background blur.
• Full‑Frame Coverage: Designed for full‑frame sensors (DG) and compatible with APS‑C bodies (equivalent ~157.5mm).
• Optical Design: 17 elements in 12 groups with high‑quality glass to suppress chromatic aberration and deliver sharp, high‑contrast images.
• 9‑Blade Rounded Diaphragm: Produces pleasing, smooth out‑of‑focus backgrounds (bokeh).
• Minimum Focusing Distance: ~29.5 cm (11.6 in) from the sensor to subject at 1:1 magnification.
• Weather‑Sealed Construction: Dust‑ and splash‑resistant design for outdoor shooting.
• Hyper‑Sonic Motor (HSM) AF: Fast and quiet autofocus with full‑time manual focus override.
• Focus Limiter Switch: Helps speed up autofocus by limiting focus range.
• Custom AFL Button: Can be assigned to various camera functions for quick access.
• Physical Aperture Ring: Some versions include an aperture control ring that can be de‑clicked for video use.
• Compact and Portable: Relatively lightweight for a macro lens (~710 g).
• Filter Size: 62 mm front filter thread.
• Supplied Accessories: Lens hood, front and rear caps, soft case.

Optical & Image Quality

The lens is optimized for exceptional sharpness from close‑up to infinity, producing crisp macro images with fine detail and excellent color accuracy. A Super Multi‑Layer Coating helps control flare and ghosting in challenging lighting, enhancing contrast and richness.

Because of its mid‑telephoto focal length and f/2.8 aperture, the lens also performs strongly as a short telephoto prime for portraits and general photography, with pleasing subject isolation and smooth background rendering.

Performance & Use Cases

• Macro Photography: Ideal for insects, flowers, product close‑ups, and other detailed subjects requiring life‑size magnification.
• Portraits: The 105 mm focal length and fast aperture make it well‑suited for portraiture with attractive bokeh.
• General Telephoto Use: Works well for general shooting where mid‑telephoto reach and image quality are desired.
• Outdoor & Nature Photography: Weather‑sealed build and comfortable working distance enhance versatility in varied conditions.

Technical Summary

• Focal Length: 105 mm (prime)
• Maximum Aperture: f/2.8
• Minimum Aperture: f/22
• Lens Construction: 17 elements in 12 groups
• Angle of View: ~23.3°
• Minimum Focus Distance: 29.5 cm / 11.6 in
• Maximum Magnification: 1:1
• Filter Size: 62 mm
• Diaphragm Blades: 9, rounded
• Weight: ~710 g
• Mount: Sony E‑mount