Getting Started with the Sigma 105mm f/2.8 DG DN Macro Art
The Sigma 105mm f/2.8 DG DN Macro Art lens for Sony E-mount is a dedicated macro lens designed for full-frame mirrorless cameras. It offers a true 1:1 magnification ratio, allowing you to capture life-size close-ups of small subjects. This guide covers the key controls and techniques to help you get sharp, well-exposed macro images from the start.
Key Specifications at a Glance
- Sigma 105mm f2.8 Macro DG DN Art Lens For Sony E: Minimum focusing distance of 29.5cm, maximum magnification ratio 1:1 This tells you how close you need to be for true macro shots. At 1:1, a subject the size of a coin fills the frame.
Sigma 105mm f2.8 Macro DG DN Art Lens For Sony E - Sigma 105mm f2.8 Macro DG DN Art Lens For Sony E: Filter size φ62mm, 12 groups 17 elements (1 SLD lens), 9-blade rounded diaphragm The 62mm filter thread is common for adding protective or creative filters. The rounded diaphragm helps produce smooth, natural bokeh.
Setting Up for a Macro Shot
Macro photography rewards a deliberate approach. Here is a step-by-step sequence using the lens's built-in controls.
- 1. Mount the lens and set the aperture ring: The lens has a physical aperture ring. You can set it to 'A' for camera-controlled aperture, or manually select an f-stop. Use the lock button to prevent accidental changes. For macro work, an aperture around f/8 to f/11 often gives the best depth of field.
- 2. Engage the Focus Limiter Switch: This switch limits the focusing range to speed up AF. For close-up work, set it to 0.295m-0.5m. For subjects farther away, use 0.5m-infinity. The FULL setting is for general use but may hunt more in macro.
- 3. Focus manually or use AF with eye/face detection: The lens is optimized for face/eye detection AF. For static subjects, manual focus with focus peaking (if your camera supports it) gives precise control. The minimum focus distance is 29.5cm from the sensor plane, not the front of the lens.
- 4. Use the AFL button for back-button focus: The AFL button on the barrel can be assigned a function via your camera menu. Many photographers use it for back-button autofocus, separating focus from the shutter release.
Macro Technique Tips
At 1:1 magnification, even slight camera movement is magnified. Use a tripod or a fast shutter speed. The lens's dust- and splash-proof construction means you can shoot in damp conditions, but take care not to block the lens barrel controls with debris. For video, the aperture ring can be de-clicked (using the switch on the barrel) for smooth, silent exposure changes during recording.
The Sigma 105mm f/2.8 DG DN Macro Art is also an excellent portrait lens. Its f/2.8 aperture and 9-blade diaphragm produce smooth bokeh, and the optical design minimizes chromatic aberration—important for both macro and portrait work.
Working with Teleconverters (L-Mount Only)
The supplied information notes that the lens is compatible with Sigma's TC-1411 (1.4x) and TC-2011 (2.0x) teleconverters, but only for L-Mount versions. If you are using the Sony E-mount version, teleconverter compatibility is not confirmed by the supplied data. For Sony E users, the 1:1 magnification is already sufficient for most macro subjects.
