IRIX Blackstone 11mm f/4
The 11mm focal length, constant f/4 aperture, and advanced optic layout with three aspherical and two ED elements ensure sharp, rectilinear images free of distortion, housed in a weather-sealed magnesium alloy body. A manual focus mechanism includes a focus lock, UV fluorescent engraved markings, and a rounded nine-blade diaphragm for precise control and smooth bokeh. This lens suits architectural and interior photographers who demand a rugged, weather-resistant ultra-wide prime for detailed, field-based work.
Resumen
Ventajas y desventajas
Ventajas
- Strong optical (88th percentile) 88th
- Strong macro (73rd percentile) 73rd
Desventajas
- Below average af (15th percentile)
- Below average user sentiment (18th percentile)
- Below average build (20th percentile)
- Below average aperture (24th percentile)
Opinión de los propietarios
Cómo cambió la opinión de los propietarios con el tiempo
ExclusivaSegún cuándo escribieron realmente sus opiniones los clientes, para ver si los elogios iniciales se mantuvieron.
Basado en 21 opiniones de clientes con fecha, agrupadas por trimestre natural. El análisis por periodo está en inglés.
Las pruebas
Rendimiento
Especificaciones
Especificaciones completas
Optics
| Type | Wide-angle |
| Focal Length Min | 11 |
| Focal Length Max | 11 |
| Elements | 16 |
| Groups | 10 |
| Aspherical Elements | 3 |
| ED Elements | 2 |
| Coating | Neutrino coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/4 |
| Constant | Yes |
| Diaphragm Blades | 9 |
Build
| Mount | Pentax K |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.8 kg / 1.7 lbs |
AF & Stabilization
| AF Type | Manual Focus |
| Stabilization | No |
Focus
| Min Focus Distance | 275 |
Frente a la competencia
| Spec | IRIX Blackstone 11mm f/4 | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Canon RF 28-70mm f/2.8 IS STM | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Panasonic LUMIX S S-R28200 | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR |
|---|---|---|---|---|---|---|
| Focal Length | 11mm | 16-300mm | 28-70mm | 18-300mm | 28-200mm | 16-85mm |
| Max Aperture | f/22 | f/3.5 | f/2.8 | f/3.5 | f/4 | f/3.5 |
| Mount | Pentax K | Sony E | Canon RF | Fujifilm X | L-Mount | Nikon F |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | true | true | true | false | true | false |
| Weight (g) | 790 | 615 | 495 | 92 | 413 | 59 |
| AF Type | Manual Focus | HLA | STM | VXD linear motor | Autofocus | AF-S |
| Lens Type | wide-angle | zoom | zoom | zoom | macro | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Producto | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Valoración social | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| IRIX Blackstone 11mm f/4 | 15.3 | 27.9 | 20.3 | 72.6 | 88 | 24.2 | 18.1 | 34 | 55.4 | 35.6 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.7 | 84.3 | 57.9 | 86.5 | 98.8 | 77 | 0 | 99.6 | 83 | 99.1 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 85.5 | 86.2 | 67.2 | 77.4 | 84.4 | 83.8 | 0 | 77.4 | 88 | 98.2 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.1 | 75 | 96.3 | 88.4 | 73.5 | 77 | 34.7 | 99.2 | 83 | 80.5 |
| Panasonic LUMIX S S-R28200 Compare | 54.7 | 77.9 | 73.9 | 89.5 | 90.9 | 71.5 | 0 | 95.7 | 75.3 | 99.4 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 54.7 | 75 | 98.4 | 59.8 | 64.1 | 77 | 83.1 | 94.3 | 88 | 92.2 |
Precio
Relación calidad-precio
Adorama 1 oferta Desde 419 US$
Amazon 1 oferta Desde 419 US$
B&H Photo 1 oferta Desde 419 US$
Price History
Puntuaciones por uso
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