Pentax DA 50mm f/1.8
An f/1.8 aperture and built-in stabilization make this a versatile 122g prime for Pentax APS-C cameras, offering sharp portraits with smooth bokeh. Its affordable price and 4.6/5 customer rating across 5,328 reviews highlight its value for budget-conscious photographers. Best for Pentax DSLR owners seeking a lightweight, fast standard lens for portraits and low-light shots.
关于此Lens
The smc DA 50mm f/1.8 Lens from Pentax is a fast f/1.8 lens for cameras with a Pentax K mount. Mounted to a camera with an APS-C sensor, this lens gives an angle of view equivalent to a 76.5mm telephoto lens--ideal for portraits. The wide f/1.8 aperture makes this an essential lens for working in low light, and it also delivers beautiful bokeh (the out-of-focus portion of a photograph). This lightweight (4.3 oz) lens is very compact--just 1.5" (3.8 cm) long. The addition of Pentax Super Protect (SP) coating to the lens helps prevent dust, water, grease and other substances from attaching themselves to a lens and degrading image quality.
- Very Fast f/1.8 Maximum Aperture
- Excellent Low-Light Lens
- Pleasing Bokeh (Out-of-Focus Areas)
- SP Coating Repels Dust, Water, Grease
概述
性能表现
优缺点
Pros
- Strong build (93th percentile) 93th
- Strong user sentiment (91th percentile) 91th
- Strong social proof (76th percentile) 76th
Cons
- Below average bokeh (13th percentile) 13th
- Below average aperture (21th percentile) 21th
- Below average optical (28th percentile) 28th
- Below average versatility (34th percentile) 34th
规格参数
完整规格参数
Optics
| Type | prime |
| Focal Length Min | 50 |
| Focal Length Max | 50 |
| Elements | 6 |
| Groups | 5 |
| Coating | SP Coating |
Aperture
| Max Aperture | 22 |
| Min Aperture | 1.8 |
| Constant | Yes |
| Diaphragm Blades | 7 |
Build
| Mount | Pentax K |
| Format | APS-C |
| Weather Sealed | No |
| Weight | 0.1 kg / 0.3 lbs |
| Filter Thread | 52 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 451 |
| Max Magnification | 1:6.67 |
性价比分析
竞品对比
| Spec | Pentax DA 50mm f/1.8 | Tamron Di III 28-75mm F/2.8 Di III VXD G2 | Meike Neo Series MK-5514STM-Z | Viltrox AF 35mm f1.7 Z | Panasonic LUMIX G H-HS12060 | Sirui Sniper 56mm Autofocus |
|---|---|---|---|---|---|---|
| Focal Length | 50mm | 28-75mm | 55mm | 35mm | 12-60mm | 56mm |
| Max Aperture | 22 | f/2.8 | f/1.4 | f/1.7 | 5.6 | f/1.2 |
| Mount | Pentax K | Nikon Z | Nikon Z | Nikon Z | Micro Four Thirds | E Mount |
| Stabilization | false | false | true | true | true | true |
| Weather Sealed | false | true | false | true | true | false |
| Weight (g) | 122 | 550 | 280 | 180 | 286 | 880 |
| AF Type | Autofocus | VXD linear motor | STM | STM | Autofocus | STM |
| Lens Type | prime | zoom | prime | prime | standard | prime |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Pentax DA 50mm f/1.8 | 53.3 | 13.4 | 92.5 | 55.4 | 27.5 | 20.9 | 91.3 | 34 | 75.5 | 34.5 |
| Tamron Di III 28-75mm F/2.8 Di III VXD G2 Compare | 98 | 81.2 | 63.1 | 83.9 | 87.9 | 79.1 | 79.9 | 78.6 | 89.9 | 34.5 |
| Meike Neo Series MK-5514STM-Z Compare | 85.5 | 94.9 | 72.8 | 94.6 | 49.7 | 94.8 | 79.9 | 34 | 89.9 | 79.7 |
| Viltrox AF 35mm f1.7 Z Compare | 85.5 | 92.7 | 92.8 | 72 | 63.1 | 91.8 | 62.7 | 34 | 89.9 | 79.7 |
| Panasonic LUMIX G H-HS12060 Compare | 53.3 | 56.9 | 83.2 | 94.3 | 63.1 | 57.5 | 91.3 | 93.6 | 72.5 | 79.7 |
| Sirui Sniper 56mm Autofocus Compare | 85.5 | 97.9 | 18.5 | 97.9 | 73.3 | 97.9 | 62.7 | 34 | 89.9 | 79.7 |
使用场景评分
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