Sony DT 50mm F1.8 SAM vs Sigma 50mm f/1.4 DG HSM Art
Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.
Verdict at a glance
- Sigma 50mm f/1.4 DG HSM Art is faster by 0.7 stops (f/1.4 vs f/1.8), letting in more light.
- Sony DT 50mm F1.8 SAM is lighter by 645g.
| Spec | DT 50mm F1.8 SAM | 50mm f/1.4 DG HSM Art |
|---|---|---|
| Brand | Sony | Sigma |
| Mount | Sony A | Sony A |
| Type | Prime | Prime |
| Focal length | 50mm | 50mm |
| Max aperture | f/1.8 | f/1.4 (faster) |
| Released | 2009 | n/a |
| Blades | 7 | 9 |
| Format | aps-c | full-frame |
| Groups | 5 | 8 |
| Af motor | SAM | HSM |
| Elements | 6 | 13 |
| Weight g | 170 (lighter) | 815 |
| Filter mm | 49 | 77 |
| Length mm | 45.0 | n/a |
| Min focus m | 0.34 (closer focusing) | 0.4 |
| Max magnification | 0.2 | 0.18 |
Sony DT 50mm F1.8 SAM
A short telephoto prime for APS-C A-mount with a bright f/1.8 aperture. It weighs about 170 g and has a 49mm filter thread.
Pros
- Fast f/1.8 aperture
- Small and light
- Close focus of 0.34 m
- Quiet SAM autofocus
Cons
- Plastic mount and body
- APS-C only
- Tight for indoor use on crop bodies
Sigma 50mm f/1.4 DG HSM Art
A very sharp 50mm f/1.4 for full-frame DSLRs, weighing about 815 g with 77mm filters. It focuses as close as 0.4 m.
Pros
- Sharp at f/1.4
- HSM autofocus
- Close focus of 0.4 m
- 9-bladed aperture
Cons
- Heavy at about 815 g
- Large for a 50mm
- No stabilization