Tamron 50-300mm F/4.5-6.3 Di III VC VXD vs Tamron 70-300mm F/4.5-6.3 Di III RXD
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Aperture blades: 9 on the 50-300mm F/4.5-6.3 Di III VC VXD, against 7 on the 70-300mm F/4.5-6.3 Di III RXD.
- Closest focus: 0.22 m on the 50-300mm F/4.5-6.3 Di III VC VXD, against 0.80 m on the 70-300mm F/4.5-6.3 Di III RXD.
- Max magnification: 0.50× on the 50-300mm F/4.5-6.3 Di III VC VXD, against 0.20× on the 70-300mm F/4.5-6.3 Di III RXD.
- Optical stabilisation: Yes on the 50-300mm F/4.5-6.3 Di III VC VXD, against No on the 70-300mm F/4.5-6.3 Di III RXD.
- Weight: 545 g on the 70-300mm F/4.5-6.3 Di III RXD, against 665 g on the 50-300mm F/4.5-6.3 Di III VC VXD.
50-300mm F/4.5-6.3 Di III VC VXD or 70-300mm F/4.5-6.3 Di III RXD: which should you buy?
Choose the 50-300mm F/4.5-6.3 Di III VC VXD for its aperture blades, closest focus, max magnification and optical stabilisation.
Choose the 70-300mm F/4.5-6.3 Di III RXD for its weight.
On paper the 50-300mm F/4.5-6.3 Di III VC VXD wins more rows (4 to 1); if the 70-300mm F/4.5-6.3 Di III RXD's strengths are the ones you shoot with, and its price is lower where you buy, it can still be the better buy.
 |  | |
|---|---|---|
| Lowest price today | $699 new | $369 new $349.99 used |
| Optics | ||
| Focal length | 50–300mm | 70–300mm |
| 35mm equivalent | 50–300mm (full frame) | 70–300mm (full frame) |
| Maximum apertureLower f-number lets in more light. A zoom wins only when it is as bright at both ends. | f/4.5–6.3 | f/4.5–6.3 |
| Minimum aperture | f/22 | f/22 |
| Made for | Full frame | Full frame |
| Elements / groups | 19 / 14 | 15 / 10 |
| Aperture blades | 9 (best) | 7 |
| Closest focus | 0.22 m (best) | 0.80 m |
| Max magnification | 0.50× (best) | 0.20× |
| Focus & handling | ||
| Autofocus | Yes (VXD) | Yes (RXD) |
| Optical stabilisation | Yes (best) | No |
| Weather sealed | Yes | Yes |
| Internal zoom | No | No |
| Aperture ring | No | No |
| Teleconverter compatible | No | No |
| Size & weight | ||
| Weight | 665 g | 545 g (best) |
| Diameter × length | 78 × 150 mm | 77 × 148 mm |
| Filter thread | 67 mm | 67 mm |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.