Sigma 105mm F2.8 DG DN Macro Art vs Tamron 28-75mm F/2.8 Di III VXD G2
The bottom line
These cover different focal lengths — the Sigma 105mm F2.8 DG DN Macro Art is 105mm, the Tamron 28-75mm F/2.8 Di III VXD G2 is 28-75mm — so they're not really substitutes. Pick by the field of view you actually need: the Sigma 105mm F2.8 DG DN Macro Art for zoom, the Tamron 28-75mm F/2.8 Di III VXD G2 for standard zoom.
Choose the Sigma 105mm F2.8 DG DN Macro Art if…
- ✓You need more reach — it goes to 105mm vs 75mm for distant subjects, wildlife and sport.
- ✓You shoot close-ups — 1x magnification gets you true macro the other can't.
- ✓You prefer a fast, compact single focal length — a 105mm prime over a zoom.
Choose the Tamron 28-75mm F/2.8 Di III VXD G2 if…
- ✓You shoot wide — it starts at 28mm vs 105mm for landscapes, interiors and architecture.
- ✓You want one-lens flexibility — a 28-75mm zoom covers what the fixed 105mm can't reframe.
- ✓You value portability — at 540g (1.19 lb) it's lighter than the 715g (1.58 lb) alternative for travel and all-day carry.
Where they differ
- ›Focal range: Sigma 105mm F2.8 DG DN Macro Art is 105mm, Tamron 28-75mm F/2.8 Di III VXD G2 is 28-75mm — different framing and reach.
- ›Type: the Tamron 28-75mm F/2.8 Di III VXD G2 is a zoom (flexible framing), the Sigma 105mm F2.8 DG DN Macro Art a prime (one focal length, usually brighter and lighter).
- ›Close-up: the Sigma 105mm F2.8 DG DN Macro Art reaches 1x magnification vs 0.34x — more for close-up and macro work.
- ›Weight: the Tamron 28-75mm F/2.8 Di III VXD G2 is 540g (1.19 lb) vs 715g (1.58 lb) — you'll feel the difference handheld.
Frequently asked
Is the Sigma 105mm F2.8 DG DN Macro Art or the Tamron 28-75mm F/2.8 Di III VXD G2 better?
These cover different focal lengths — the Sigma 105mm F2.8 DG DN Macro Art is 105mm, the Tamron 28-75mm F/2.8 Di III VXD G2 is 28-75mm — so they're not really substitutes. Pick by the field of view you actually need: the Sigma 105mm F2.8 DG DN Macro Art for zoom, the Tamron 28-75mm F/2.8 Di III VXD G2 for standard zoom.
Who should choose the Sigma 105mm F2.8 DG DN Macro Art?
Choose the Sigma 105mm F2.8 DG DN Macro Art if you need more reach — it goes to 105mm vs 75mm for distant subjects, wildlife and sport. Choose it if you shoot close-ups — 1x magnification gets you true macro the other can't. Choose it if you prefer a fast, compact single focal length — a 105mm prime over a zoom.
Who should choose the Tamron 28-75mm F/2.8 Di III VXD G2?
Choose the Tamron 28-75mm F/2.8 Di III VXD G2 if you shoot wide — it starts at 28mm vs 105mm for landscapes, interiors and architecture. Choose it if you want one-lens flexibility — a 28-75mm zoom covers what the fixed 105mm can't reframe. Choose it if you value portability — at 540g (1.19 lb) it's lighter than the 715g (1.58 lb) alternative for travel and all-day carry.
What is the main difference between the Sigma 105mm F2.8 DG DN Macro Art and the Tamron 28-75mm F/2.8 Di III VXD G2?
Focal range: Sigma 105mm F2.8 DG DN Macro Art is 105mm, Tamron 28-75mm F/2.8 Di III VXD G2 is 28-75mm — different framing and reach.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 105mm | 28-75mm |
| Lens Type | Prime | Zoom |
| Optical Elements | 17 | 17 |
| Optical Groups | 13 | 14 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/2.8 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 23° | 75° – 32° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | HLA | VXD |
| Focus Limiter | Yes | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 30 cm | 18 cm |
| Max Magnification | 1x | 0.34x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $799 | $799 |
| Filter Size | 62mm | 67mm |
| Diameter | 82.8mm | 75.8mm |
| Length | 142.3mm | 117.6mm |
| Weight | 715g (1.58 lb) | 540g (1.19 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
