IRIX Blackstone 15mm f/2.4
The 15mm f/2.4 prime combines a 15-element optical design with Neutrino Coating to deliver low-distortion ultra-wide shots. Its manual focus with focus lock and weather-sealed build provide reliable tactile control in harsh conditions. This lens suits macro shooters who exploit the 250mm close focus to capture wide perspectives with sharp detail.
Panoramica
Cosa dicono i proprietari
Come è cambiata l'opinione dei proprietari nel tempo
EsclusivaIn base a quando i clienti hanno effettivamente scritto le recensioni, per vedere se gli elogi iniziali sono durati.
- Q2 201963/100
Buyers praised value and astrophotography performance, but one reported severe decentering and quality control concerns.
- Excellent value for landscape and astrophotography, with minimal distortion.
- Severe decentering defect causing softness on one side of the frame.
- Manual focus ring stiffness noted; infinity mark accuracy varies.
- Firefly version recommended over Blackstone for cost savings.
- Q1 201993/100
Buyers praised the lens for sharpness, build quality, and minimal distortion, though one noted a coma issue for astrophotography.
- Sharpness and image quality are excellent.
- Build quality and attention to detail are praised.
- Minimal distortion and easy correction in Lightroom.
- Coma issue for astrophotography; stars appear as comas.
- Q4 201873/100
Buyers praised the lens for sharpness, build quality, and value, but noted focus calibration issues and slow customer service.
- Excellent image quality and sharpness, comparable to L glass.
- Focus scale and confirmation chip can be off, requiring patience.
- Solid build quality with thoughtful features for astrophotography.
- Customer service slow to respond to focus-related complaints.
- Q2 2018100/100
Buyers praised the lens for sharpness, build quality, and astrophotography performance. Minor issues with lens shade fit were resolved by responsive support.
- Excellent image sharpness and color, especially from f/4 onward.
- Great for astrophotography, with accurate infinity focus out of the box.
- Solid build quality, described as 'built like a tank'.
- Lens shade attachment issue reported but quickly resolved by support.
- Q1 201890/100
Buyers praised the lens for sharpness, build quality, and value, especially for landscape and astrophotography. Some noted minor quality control and underexposure issues.
- Sharp image quality and excellent performance for the price.
- Good build quality, smooth focus, and sturdy construction.
- Quality control issues: some lenses sharper on one side than the other.
- Photos tend to be slightly underexposed, requiring exposure compensation.
- Q4 201778/100
Buyers praised sharpness, build quality, and value for astro/landscape, but some reported poor quality control and infinity focus calibration issues.
- Sharp image quality with minimal distortion, excellent for astro and landscape.
- Infinity focus calibration issues out of box; some lenses missing lock screws.
- Solid Blackstone build with weather sealing and included hard case.
- Gel filter system innovative but tricky to use in field.
- Q3 201783/100
Buyers praise sharpness, build quality, and value for astrophotography and landscapes, but note manual focus is impractical for general use.
- Sharpness and image quality are excellent, even wide open.
- Build quality is solid and lens is lightweight for its class.
- Manual focus-only design is impractical given autofocus alternatives.
- Packaging damage reported; lens performance unaffected.
- Q2 2017100/100
Buyers praised excellent image quality, rectilinear distortion, and thoughtful ergonomic design for landscapes and astrophotography. Some noted manual focus challenges in dim light.
- Excellent image quality and sharpness for landscapes and astrophotography.
- Well-thought-out ergonomic features like filter accommodation and focus lock.
- Minimal distortion and great value compared to pricier alternatives.
- Manual focus can be difficult in low light, but overall manageable.
Basato su 69 recensioni dei clienti datate, raggruppate per trimestre solare. L'analisi per periodo è in inglese.
Le prove
Prestazioni
Scheda tecnica
Specifiche tecniche complete
Optics
| Type | Prime |
| Focal Length Min | 15 |
| Focal Length Max | 15 |
| Elements | 15 |
| Groups | 11 |
| Aspherical Elements | 2 |
| ED Elements | 2 |
| Coating | Neutrino coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/2.4 |
| Constant | No |
| Diaphragm Blades | 9 |
Build
| Mount | Pentax K |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.7 kg / 1.5 lbs |
| Filter Thread | 95 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | No |
Focus
| Min Focus Distance | 280 |
| Max Magnification | 1:2 |
Rispetto alla concorrenza
| Spec | IRIX Blackstone 15mm f/2.4 | Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM |
|---|---|---|---|---|---|---|
| Focal Length | 15mm | 18-140mm | 28-75mm | 10-18mm | 12-60mm | 28-70mm |
| Max Aperture | f/22 | f/3.5 | f/2.8 | f/2.8 | f/2.8 | f/22 |
| Mount | Pentax K | Nikon Z | Sony E | Sony E | Micro Four Thirds | Canon RF |
| Stabilization | false | true | false | false | true | true |
| Weather Sealed | true | true | true | true | true | true |
| Weight (g) | 685 | 315 | 540 | 260 | 320 | 495 |
| AF Type | manual focus only | stepping motor | VXD | Autofocus | linear motor | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Prodotto | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Riscontro degli utenti | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| IRIX Blackstone 15mm f/2.4 | 13.9 | 25.9 | 56.9 | 74.4 | 84.1 | 22.6 | 37.3 | 33.6 | 65.4 | 37.9 |
| Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR Compare | 86.9 | 77.7 | 83.8 | 82.6 | 88.5 | 79.7 | 0 | 96.2 | 32.2 | 96.6 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88 | 67.2 | 87.3 | 87.8 | 85.6 | 80.4 | 78.2 | 83.3 | 37.9 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.4 | 87.1 | 93.3 | 81.5 | 85.6 | 80.4 | 69 | 69.2 | 37.9 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88 | 83 | 50.2 | 90.2 | 85.6 | 44.2 | 93.1 | 63.9 | 83.2 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 86.9 | 25.9 | 70.2 | 80.3 | 85 | 22.6 | 98.1 | 77.1 | 88 | 98.5 |