Irix 45mm F1.4 § 03 Head to head
Irix 45mm F1.4 vs Sigma 40mm F1.4 DG HSM Art
Irix 45mm f/1.4 has a longer reach. Sigma 40mm f/1.4 has a wider field of view.
The Irix 45mm F1.4 is a 45mm f/1.4 prime, and the Sigma 40mm F1.4 DG HSM Art is a 40mm f/1.4 prime. On paper the Irix 45mm F1.4 comes out ahead, 5 advantages to 1, but which one suits you depends on what you shoot.
Irix 45mm F1.4 
Sigma 40mm F1.4 DG HSM Art 01
Key differences
Why is the Irix 45mm F1.4 better than the Sigma 40mm F1.4 DG HSM Art?
- Longer reach (45mm vs 40mm)
- 275 g lighter (925 g vs 1200 g)
- 26 mm shorter (105 mm vs 131 mm long)
- Smaller filter thread (77 mm vs 82 mm)
- Newer design (2020 vs 2018)
Why is the Sigma 40mm F1.4 DG HSM Art better than the Irix 45mm F1.4?
- Wider field of view (40mm vs 45mm)
02
Which should you buy?
- street For street photography, the Irix 45mm F1.4 has the edge: it is 275 g lighter to carry.
- travel For travel, the Irix 45mm F1.4 has the edge: it is 275 g lighter to carry.
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Specification
| Specification | Irix 45mm F1.4 | Sigma 40mm F1.4 DG HSM Art |
|---|---|---|
| Focal length | 45mm | 40mm |
| Maximum aperture | f/1.4 | f/1.4 |
| Minimum aperture | f/22 | f/16 |
| Lens type | Standard prime lens | Standard prime lens |
| Format | Full Frame | Full Frame |
| Weight | 925 g (2.04 lbs) ◆ | 1,200 g (2.65 lbs) |
| Dimensions | 87 mm (diameter) x 105 mm (length) | 87.8 mm (diameter) x 131 mm (length) |
| Minimum focusing distance | 0.40 m (15.75 in) | 0.4 m (15.7 in) |
| Maximum magnification | Not specified | 0.15x |
| Image stabilization | No | No |
| Weather sealing | Yes | Yes (dust and splash resistant) |
| Aperture ring | No | No |
| Aperture blades | 9 (rounded) | 9 (rounded) |
| Optical construction | 11 elements in 9 groups (1 aspherical, 4 high refractive index, 1 extra-low dispersion) | 16 elements in 12 groups |
| Filter size | 77 mm ◆ | 82 mm |
| Lens mount | Canon EF, Nikon F, Pentax K | Canon EF, Nikon F, Sigma SA, Sony E |
| Released | 2020 | 2018 |
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Size
- A · Irix
- B · Sigma
- 105 × 87 mm
- 131 × 87.8 mm
The Sigma 40mm F1.4 DG HSM Art is 26 mm longer and 275 g heavier than the Irix 45mm F1.4.
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Sample frames
Irix 45mm F1.4
Sigma 40mm F1.4 DG HSM Art
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Video reviews
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Questions
- Which is lighter, the Irix 45mm F1.4 or the Sigma 40mm F1.4 DG HSM Art?
- The Irix 45mm F1.4 weighs 925 g, 275 g less than the Sigma 40mm F1.4 DG HSM Art (1200 g).
- Do the Irix 45mm F1.4 and the Sigma 40mm F1.4 DG HSM Art have image stabilization?
- No, neither lens has optical image stabilization; rely on in-body stabilization if your camera has it.
- Is the Irix 45mm F1.4 or the Sigma 40mm F1.4 DG HSM Art better for street photography?
- For street photography, the Irix 45mm F1.4 has the edge: it is 275 g lighter to carry.
- Is the Irix 45mm F1.4 or the Sigma 40mm F1.4 DG HSM Art better for travel?
- For travel, the Irix 45mm F1.4 has the edge: it is 275 g lighter to carry.