Pentax DA 50mm f/1.8 50mm
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.
Focal length 50mm
Aperture 22
Mount Pentax K
Weight 122 g
af type Autofocus
lens type prime
54 Overall Score
Price CA$161
Snapshot
Pros & Cons
Pros
- Strong build (93th percentile) 93th
- Strong user sentiment (92th percentile) 92th
- Strong social proof (83th percentile) 83th
Cons
- Below average bokeh (16th percentile)
- Below average aperture (25th percentile)
- Below average optical (26th percentile)
- Below average versatility (34th percentile)
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
Owner sentiment has improved over time
92/100Our AI sentiment read
Based on 63 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
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 |
vs Competition
| Spec | Pentax DA 50mm f/1.8 50mm | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR | Canon EF-S 18-135mm f/3.5-5.6 IS USM | Sony E SELP1650 | Meike 50mm F1.8 Full Frame STM Auto Focus Prime |
|---|---|---|---|---|---|---|
| Focal Length | 50mm | 18-300mm | 16-85mm | 18-135mm | 16-50mm | 50mm |
| Max Aperture | 22 | f/3.5 | f/3.5 | f/3.5 | f/3.5 | f/1.8 |
| Mount | Pentax K | Fuji X | Nikon F | Canon EF-S | Sony E | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | false | false | false | false | false |
| Weight (g) | 122 | 92 | 59 | 515 | 116 | 369 |
| AF Type | Autofocus | VXD linear motor | AF-S | STM | Stepping motor | STM |
| Lens Type | prime | zoom | zoom | zoom | zoom | Wide-Angle |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Pentax DA 50mm f/1.8 50mm | 55 | 16 | 92.5 | 55 | 26.1 | 25 | 91.6 | 34 | 83 | 35.8 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 76.8 | 96.3 | 88.3 | 73.9 | 78.8 | 30.1 | 99.2 | 83 | 80.8 |
| Nikon NIKKOR AF-S DX NIKKOR 16-85mm f/3.5-5.6G ED VR Compare | 55 | 76.8 | 98.5 | 59.6 | 64.5 | 78.8 | 81 | 94.2 | 87.9 | 92.3 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.2 | 76.8 | 45.9 | 32.9 | 79.5 | 78.8 | 0 | 96 | 77.9 | 92.3 |
| Sony E SELP1650 Compare | 86.2 | 76.8 | 93.5 | 34.9 | 63.5 | 78.8 | 63.8 | 83.5 | 74 | 92.3 |
| Meike 50mm F1.8 Full Frame STM Auto Focus Prime Compare | 86.2 | 96.4 | 62.4 | 95.9 | 37.5 | 93.4 | 86.3 | 34 | 52.8 | 80.8 |
Price
Value & Pricing
From CA$161
B&H Photo 1 offers From CA$161
Amazon.ca 1 offers From CA$177
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
