Sony FE 50mm F1.2 GM vs Sigma 40mm T1.5 FF (Sony E)
Sony FE 50mm F1.2 GM vs Sigma 40mm T1.5 FF (Sony E)
When comparing Sigma 40mm T1.5 FF (Sony E) and Sony FE 50mm F1.2 GM, which one is better?
1. Compare weight
The lens that weighs the least of the two is Sony FE 50mm F1.2 GM which weighs 778 g, compared to the loser Sigma 40mm T1.5 FF - (Sony E) which weighs 1620 g.
Winner: Sony FE 50mm F1.2 GM
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
Both lenses have the same minimum focusing distance and therefore one is not better than the other when it comes to how close the lens can focus.
Winner: Tied
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 Sony FE 50mm F1.2 GM and Sigma 40mm T1.5 FF (Sony E):
| Sony FE 50mm F1.2 GM | Sigma 40mm T1.5 FF - (Sony E) | |
 |  | |
| Brand | Sony | Sigma |
| Weight | 778 g | 1620 g |
| Mount | Sony E | Sony E |
| Focal Length | 50 mm | 40 mm |
| Largest Aperture | 1.2 | 1.5 |
| Anamorphic Lens | No | No |
| Minimum Focusing Distance | 40 cm | 40 cm |
| Type | Prime | Prime |
| Filter Thread | 72 | 82 |
| Lens Front Diameter (Not Filter Thread) | 87 mm | Missing |
| Stabilization | No | Yes |
| Covers a Full Frame Sensor? | Yes | Yes |