Tamron 17-50mm f/4 Di III VXD vs Tamron 28-75mm F/2.8 Di III VXD G2
The bottom line
Similar coverage, different speed: the Tamron 28-75mm F/2.8 Di III VXD G2 opens to f/2.8 versus the Tamron 17-50mm f/4 Di III VXD's f/4 — more light and shallower background blur. The Tamron 17-50mm f/4 Di III VXD gives that up to stay lighter (460g (1.01 lb)). It comes down to how much you value that extra brightness.
Choose the Tamron 17-50mm f/4 Di III VXD if…
- ✓You shoot wide — it starts at 17mm vs 28mm for landscapes, interiors and architecture.
Choose the Tamron 28-75mm F/2.8 Di III VXD G2 if…
- ✓You want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation.
- ✓You need more reach — it goes to 75mm vs 50mm for distant subjects, wildlife and sport.
- ✓You like close-focus work — 0.34x magnification vs 0.24x.
Where they differ
- ›Aperture: the Tamron 28-75mm F/2.8 Di III VXD G2 opens to f/2.8 vs the Tamron 17-50mm f/4 Di III VXD's f/4 — more light and shallower depth-of-field.
- ›Focal range: Tamron 17-50mm f/4 Di III VXD is 17-50mm, Tamron 28-75mm F/2.8 Di III VXD G2 is 28-75mm — different framing and reach.
- ›Weight: the Tamron 17-50mm f/4 Di III VXD is 460g (1.01 lb) vs 540g (1.19 lb) — you'll feel the difference handheld.
Frequently asked
Is the Tamron 17-50mm f/4 Di III VXD or the Tamron 28-75mm F/2.8 Di III VXD G2 better?
Similar coverage, different speed: the Tamron 28-75mm F/2.8 Di III VXD G2 opens to f/2.8 versus the Tamron 17-50mm f/4 Di III VXD's f/4 — more light and shallower background blur. The Tamron 17-50mm f/4 Di III VXD gives that up to stay lighter (460g (1.01 lb)). It comes down to how much you value that extra brightness.
Who should choose the Tamron 17-50mm f/4 Di III VXD?
Choose the Tamron 17-50mm f/4 Di III VXD if you shoot wide — it starts at 17mm vs 28mm for landscapes, interiors and architecture.
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 want more light and background blur — f/2.8 is faster than f/4, better for low light and subject separation. Choose it if you need more reach — it goes to 75mm vs 50mm for distant subjects, wildlife and sport. Choose it if you like close-focus work — 0.34x magnification vs 0.24x.
What is the main difference between the Tamron 17-50mm f/4 Di III VXD and the Tamron 28-75mm F/2.8 Di III VXD G2?
Aperture: the Tamron 28-75mm F/2.8 Di III VXD G2 opens to f/2.8 vs the Tamron 17-50mm f/4 Di III VXD's f/4 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 17-50mm | 28-75mm |
| Lens Type | Zoom | Zoom |
| Optical Elements | 15 | 17 |
| Optical Groups | 11 | 14 |
| Aperture & Iris | ||
| Maximum Aperture | f/4 | 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 | 104° – 47° | 75° – 32° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | VXD | VXD |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 19 cm | 18 cm |
| Max Magnification | 0.24x | 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 | 67mm | 67mm |
| Diameter | 75mm | 75.8mm |
| Length | 86.2mm | 117.6mm |
| Weight | 460g (1.01 lb) | 540g (1.19 lb) |
| Weather Sealed | Yes | Yes |
| Tripod Collar | No | No |
