Pentax HD PENTAX-D FA 28050 21mm
Combining a 21mm ultra-wide perspective with a bright f/2.4 aperture and 4 ED elements, this lens delivers sharp, high-resolution images with uniform rendition across the full-frame field. Its weather-resistant construction and close 7.1" minimum focusing distance add practical versatility to the precision-machined Limited-series build. This optic is best for landscape and architectural photographers using Pentax K-mount DSLRs who need durable, all-weather performance.
Focal length 21mm
Aperture f/22
Mount Pentax K
Weather Sealed Sí
Weight 416 g
af type Autofocus
lens type wide-angle
56 Puntuación global
Precio 778 GBP
Resumen
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.
85/100Nuestro análisis de opinión con IA
Basado en 9 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 | 21 |
| Focal Length Max | 21 |
| Elements | 11 |
| Groups | 8 |
| Aspherical Elements | 1 |
| ED Elements | 4 |
| Coating | High-Grade Multi-Layer HD Coating |
Aperture
| Max Aperture | f/22 |
| Min Aperture | f/2.4 |
| Constant | Yes |
| Diaphragm Blades | 8 |
Build
| Mount | Pentax K |
| Format | full-frame |
| Weather Sealed | Yes |
| Weight | 0.4 kg / 0.9 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 180 |
| Max Magnification | 1:3.85 |
Frente a la competencia
| Spec | Pentax HD PENTAX-D FA 28050 21mm | Sigma Contemporary 18-50mm f/2.8 DC DN | Tamron Di III 17-70mm f/2.8 Di III-A VC RXD | Nikon NIKKOR Z 17-28mm f/2.8 | Panasonic Leica DG Vario-Elmarit H-ES12035 | Sony E 18-135mm f/3.5-5.6 OSS |
|---|---|---|---|---|---|---|
| Focal Length | 21mm | 18-50mm | 17-70mm | 17-28mm | 12-35mm | 18-135mm |
| Max Aperture | f/22 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/3.5 |
| Mount | Pentax K | Sony E | Sony E | Nikon Z | Micro Four Thirds | Sony E |
| Stabilization | false | false | true | false | true | true |
| Weather Sealed | true | true | true | true | true | false |
| Weight (g) | 416 | 290 | 544 | 450 | 306 | 326 |
| AF Type | Autofocus | stepping motor | RXD | Stepping Motor | Autofocus | Linear motor |
| Lens Type | wide-angle | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Producto | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Valoración social | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Pentax HD PENTAX-D FA 28050 21mm | 53.7 | 17.9 | 77.6 | 86.5 | 76.5 | 19.8 | 63.7 | 33.7 | 60.8 | 36.7 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 86.8 | 81.1 | 86.4 | 91.4 | 82.4 | 83.3 | 80.9 | 78.6 | 90.2 | 36.7 |
| Tamron Di III 17-70mm f/2.8 Di III-A VC RXD Compare | 53.7 | 86.4 | 69 | 85.5 | 91.2 | 83.3 | 63.7 | 89.6 | 86 | 82.4 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 86.8 | 86.4 | 75.6 | 85.5 | 88.3 | 83.3 | 91.2 | 68.1 | 70.8 | 36.7 |
| Panasonic Leica DG Vario-Elmarit H-ES12035 Compare | 53.7 | 81.1 | 85.7 | 50.7 | 86.6 | 83.3 | 63.7 | 80.6 | 86 | 96.9 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 74.6 | 72.9 | 40.3 | 78.7 | 76.6 | 44.7 | 95.8 | 90.2 | 82.4 |
Precio
Relación calidad-precio
Desde 778 GBP
