Samyang AF 35mm f/1.4 FE vs Sony FE 40mm f/2.5 G
The bottom line
These cover different focal lengths — the Samyang AF 35mm f/1.4 FE is 35mm, the Sony FE 40mm f/2.5 G is 40mm — so they're not really substitutes. Pick by the field of view you actually need: the Samyang AF 35mm f/1.4 FE for wide-angle, the Sony FE 40mm f/2.5 G for standard.
Choose the Samyang AF 35mm f/1.4 FE if…
- ✓You want more light and background blur — f/1.4 is faster than f/2.5, better for low light and subject separation.
Choose the Sony FE 40mm f/2.5 G if…
- ✓You value portability — at 173g (6.1 oz) it's lighter than the 435g (15.3 oz) alternative for travel and all-day carry.
- ✓You like close-focus work — 0.23x magnification vs 0.14x.
- ✓You work outdoors — it's weather-sealed against dust and moisture; the other isn't.
Where they differ
- ›Aperture: the Samyang AF 35mm f/1.4 FE opens to f/1.4 vs the Sony FE 40mm f/2.5 G's f/2.5 — more light and shallower depth-of-field.
- ›Focal range: Samyang AF 35mm f/1.4 FE is 35mm, Sony FE 40mm f/2.5 G is 40mm — different framing and reach.
- ›Weight: the Sony FE 40mm f/2.5 G is 173g (6.1 oz) vs 435g (15.3 oz) — you'll feel the difference handheld.
- ›Durability: the Sony FE 40mm f/2.5 G is weather-sealed; the other isn't.
Frequently asked
Is the Samyang AF 35mm f/1.4 FE or the Sony FE 40mm f/2.5 G better?
These cover different focal lengths — the Samyang AF 35mm f/1.4 FE is 35mm, the Sony FE 40mm f/2.5 G is 40mm — so they're not really substitutes. Pick by the field of view you actually need: the Samyang AF 35mm f/1.4 FE for wide-angle, the Sony FE 40mm f/2.5 G for standard.
Who should choose the Samyang AF 35mm f/1.4 FE?
Choose the Samyang AF 35mm f/1.4 FE if you want more light and background blur — f/1.4 is faster than f/2.5, better for low light and subject separation.
Who should choose the Sony FE 40mm f/2.5 G?
Choose the Sony FE 40mm f/2.5 G if you value portability — at 173g (6.1 oz) it's lighter than the 435g (15.3 oz) alternative for travel and all-day carry. Choose it if you like close-focus work — 0.23x magnification vs 0.14x. Choose it if you work outdoors — it's weather-sealed against dust and moisture; the other isn't.
What is the main difference between the Samyang AF 35mm f/1.4 FE and the Sony FE 40mm f/2.5 G?
Aperture: the Samyang AF 35mm f/1.4 FE opens to f/1.4 vs the Sony FE 40mm f/2.5 G's f/2.5 — more light and shallower depth-of-field.
| Product | ||
|---|---|---|
| Optical Design | ||
| Focal Length | 35mm | 40mm |
| Lens Type | Prime | Prime |
| Optical Elements | 11 | 8 |
| Optical Groups | 8 | 7 |
| Aperture & Iris | ||
| Maximum Aperture | f/1.4 | f/2.5 |
| Minimum Aperture | f/16 | f/22 |
| Aperture Blades | 9 | 9 |
| Rounded Aperture | Yes | Yes |
| Coverage & Angle | ||
| Format Coverage | Full-Frame | Full-Frame |
| Lens Mount | Sony E | Sony E |
| Angle of View | 63° | 57° |
| 35mm Equivalent | − | − |
| Focus | ||
| Autofocus | Yes | Yes |
| Focus Motor | STM | XD Linear |
| Focus Limiter | No | No |
| AF/MF Switch | Yes | Yes |
| Min Focus Distance | 30 cm | 25 cm |
| Max Magnification | 0.14x | 0.23x |
| Stabilization & Video | ||
| Optical Stabilization | No | No |
| Aperture Ring | No | Yes |
| Declickable Aperture | No | Yes |
| Parfocal | No | No |
| Internal Zoom | No | No |
| General | ||
| Price (MSRP) | $649 | $599 |
| Filter Size | 67mm | 49mm |
| Diameter | 78.5mm | 68mm |
| Length | 99.5mm | 45.5mm |
| Weight | 435g (15.3 oz) | 173g (6.1 oz) |
| Weather Sealed | No | Yes |
| Tripod Collar | No | No |
