IRIX 45mm f/1.4 Review
This lens makes beautiful images but feels like it might break in your hands. It's a classic case of sacrificing everything for one great trick.
Overview
This lens is a weird one. It's a heavy, manual focus-only prime that costs over $400, and it's built like a toy from the bargain bin. The one thing you need to know is that it's a one-trick pony: if you want creamy, dreamy bokeh for portraits on a budget, it delivers. But you'll be fighting the build quality and clunky manual focus every step of the way.
Performance
The optical performance is a pleasant surprise. The bokeh quality lands in the 89th percentile, which is genuinely impressive for the price. That f/1.4 aperture gives you that beautiful background separation and lets in a ton of light. But the 'performance' of actually using it is rough. The all-plastic build feels cheap, and the manual focus ring isn't exactly smooth or precise.
Pros & Cons
Pros
- Strong bokeh (89th percentile) 91th
- Strong aperture (88th percentile) 88th
- Strong optical (71th percentile) 74th
Cons
- Below average build (16th percentile)
Specifications
Full Specifications
Optics
| Focal Length Min | 45 |
| Focal Length Max | 45 |
| Elements | 11 |
| Groups | 9 |
Aperture
| Max Aperture | f/1.4 |
| Min Aperture | f/22 |
| Diaphragm Blades | 9 |
Build
| Mount | Nikon F |
| Format | Full-Frame |
| Weather Sealed | Yes |
| Weight | 0.9 kg / 2.0 lbs |
| Filter Thread | 77 |
AF & Stabilization
| Stabilization | No |
Focus
| Min Focus Distance | 400 |
Value & Pricing
It's a tough sell. At $419, you're paying for the optics and the aperture, not the experience. If you're a portrait shooter on a strict budget who doesn't mind manual focus and can live with the plasticky feel, the image quality might justify it. For anyone else, there are better options.
vs Competition
Look at the Viltrox 35mm f/1.7 Z. It's cheaper, has autofocus, and is much lighter. You lose a bit of that magical bokeh, but you gain a usable, modern lens. The Meike 55mm f/1.8 Pro is another alternative; it's also manual but often feels better built. If you need autofocus and a similar look, you'll have to spend more, but you'll get a lens you actually enjoy using.
| Spec | IRIX 45mm f/1.4 | Meike Meike 55mm F1.4 Standard Aperture APS-C Frame AF | Viltrox Air VILTROX 35mm F1.7 f/1.7 Air AF Lens for Fuji X | Tamron Di III Tamron 17-70mm f/2.8 Di III-A VC RXD Lens for Sony | Canon RF Canon RF 24mm f/1.8 Macro IS STM Lens | Fujifilm VILTROX 56mm F1.4 STM APS-C Frame Auto Focus |
|---|---|---|---|---|---|---|
| Focal Length | 45mm | 55mm | 35mm | 17-70mm | 24mm | - |
| Max Aperture | f/1.4 | f/1.4 | f/1.7 | f/2.8 | f/1.8 | f/1.4 |
| Mount | Nikon F | Nikon Z | Fujifilm X | Sony E-Mount, Sony E-Mount, Sony E-Mount, Sony E-Mount, Sony E-M | Canon RF | Fujifilm X |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | false | false | false | false | true |
| Weight (g) | 903 | 281 | 400 | 544 | 272 | 320 |
| AF Type | - | STM | STM | Autofocus | Autofocus | STM |
| Lens Type | - | - | - | Wide-Angle Zoom | Wide-Angle | - |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| IRIX 45mm f/1.4 | 46.4 | 90.8 | 59.5 | 59.8 | 74 | 88.1 | 37.5 | 56.9 | 37.9 |
| Meike 55mm F1.4 Standard Aperture APS-C Frame AF STM Compare | 95.6 | 81.8 | 81.2 | 89.1 | 67.5 | 88.1 | 37.5 | 89.9 | 87.7 |
| Viltrox Air 35mm F1.7 f/1.7 AF Compare | 95.6 | 73.6 | 63.5 | 93.2 | 74 | 80.6 | 37.5 | 95.1 | 87.7 |
| Tamron Di III 17-70mm f/2.8 -A VC RXD Compare | 46.4 | 59.2 | 64.4 | 77.4 | 90.8 | 54.6 | 92.5 | 95.1 | 87.7 |
| Canon RF 24mm f/1.8 Macro IS STM Compare | 46.4 | 81.8 | 87.7 | 81 | 82.5 | 75.8 | 37.5 | 98 | 99.9 |
| Fujifilm VILTROX 56mm F1.4 STM APS-C Frame Auto Focus Standard Prime Compare | 95.6 | 81.8 | 88.9 | 85.2 | 34.6 | 88.1 | 37.5 | 86.7 | 87.7 |
Verdict
Only buy this if you're a dedicated manual focus shooter who values bokeh above all else and can't spend a dime more. For 99% of people, the compromises in build and usability are too great. The Viltrox 35mm f/1.7 Z is a more sensible choice for most, offering 90% of the image quality with 200% more convenience.