Tamron 70-180mm F2.8 Di III VXD vs Sigma 40mm T1.5 FF (Sony E)
Tamron 70-180mm F2.8 Di III VXD vs Sigma 40mm T1.5 FF (Sony E)
When comparing Sigma 40mm T1.5 FF (Sony E) and Tamron 70-180mm F2.8 Di III VXD, which one is better?
1. Compare weight
The lens that weighs the least of the two is Tamron 70-180mm F2.8 Di III VXD which weighs 815 g, compared to the loser Sigma 40mm T1.5 FF - (Sony E) which weighs 1620 g.
Winner: Tamron 70-180mm F2.8 Di III VXD
Regarding weight: When it comes to the lens's weight, it's actually more important than many people think that the lens weighs as little as possible — it's simply a pain to lug around a lens that's too heavy when you're photographing or filming for several hours, and a few hundred grams can make a real difference.
2. Compare minimum focusing distance
When it comes to minimum focusing distance, that is how close to the subject the lens can focus, Sigma 40mm T1.5 FF - (Sony E) is the winner with a minimum focusing distance of 40 cm. This can be compared with the minimum focusing distance of 85 cm for Tamron 70-180mm F2.8 Di III VXD.
Winner: Sigma 40mm T1.5 FF (Sony E)
Regarding minimum focusing distance: The lens's minimum focusing distance determines how close you can photograph your subject, such as a face or an animal. If the minimum focusing distance is 50 cm then you cannot get closer to your subject than 50 cm. Macro lenses often have a very low minimum focusing distance so that you can take close-up shots (macro photography).
Specifications
Full specifications table of Tamron 70-180mm F2.8 Di III VXD and Sigma 40mm T1.5 FF (Sony E):
| Tamron 70-180mm F2.8 Di III VXD | Sigma 40mm T1.5 FF - (Sony E) | |
 |  | |
| Brand | Tamron | Sigma |
| Weight | 815 g | 1620 g |
| Mount | Sony E | Sony E |
| Focal Length | 70 - 180 mm | 40 mm |
| Largest Aperture | 2.8 | 1.5 |
| Anamorphic Lens | No | No |
| Minimum Focusing Distance | 85 cm | 40 cm |
| Type | Zoom | Prime |
| Filter Thread | 67 | 82 |
| Stabilization | No | Yes |
| Covers a Full Frame Sensor? | Yes | Yes |