Lens Comparison
Samyang AF 18mm f/2.8 FE vs Sony FE 50mm f/1.8
Key Differences
- Samyang AF 18mm f/2.8 FE has a better min focus distance (25 cm vs 45 cm).
- Sony FE 50mm f/1.8 has a better maximum aperture (f/1.8 vs f/2.8).
- Samyang AF 18mm f/2.8 FE has a better weight (128g (4.5 oz) vs 186g (6.6 oz)).
- Sony FE 50mm f/1.8 has a better price (msrp) ($249 vs $299).
- Sony FE 50mm f/1.8 has a better length (59.5mm vs 61.8mm).
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 18mm | 50mm |
| Lens Type | Prime | Prime |
| Optical Elements | 12 | 6 |
| Optical Groups | 8 | 5 |
| Aperture & Iris | ||
| Maximum Aperture | f/2.8 | f/1.8 |
| Minimum Aperture | f/22 | f/22 |
| Aperture Blades | 7 | 7 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | − | 47° – 47° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | STM |
| Focus Limiter | No | No |
| AF/MF Switch | No | No |
| Min Focus Distance | 25 cm | 45 cm |
| Max Magnification | 0.12x | 0.14x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | No |
| Declickable Aperture | No | No |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $299 | $249 |
| Filter Size | 77mm | 49mm |
| Diameter | 72.2mm | 68.6mm |
| Length | 61.8mm | 59.5mm |
| Weight | 128g (4.5 oz) | 186g (6.6 oz) |
| Weather Sealed | No | No |
| Tripod Collar | No | No |
