Desiontal 420-800 420-800mm
Its 420-800mm zoom range on a full-frame Canon EF mount provides extreme reach for distant subjects like wildlife and the moon at a very low entry cost. The fully manual focus and aperture design, combined with UMC-coated optics, forces a deliberate shooting process that builds technical skill while delivering sharp images with notable background bokeh. This lens is best for budget-conscious hobbyists wanting to experiment with super-telephoto photography on older Canon DSLRs without relying on autofocus.
Snapshot
Pros & Cons
Pros
- Strong stabilization (83rd percentile) 83rd
- Strong social proof (70th percentile) 70th
- Strong versatility (69th percentile) 69th
Cons
- Below average af (13th percentile)
- Below average user sentiment (16th percentile)
- Below average build (25th percentile)
- Below average bokeh (30th 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.
- Q1 202667/100
Buyers gave mixed feedback: one praised the lens for moon photos and long distances, but another said it didn't fit the camera as stated.
- Works well for moon photography and long-distance shots.
- Does not fit the camera as advertised.
- Q4 202588/100
Buyers praised build quality and value, but noted the fully manual operation requires practice and a tripod; minor color shift at long distances was mentioned once.
- Fully manual lens: no electronics, must hand-adjust focus/aperture; tripod recommended.
- Excellent build quality and fit; no looseness, produces good images.
- Good value for hobbyists but heavy; requires tripod and practice.
- Color shift at long distances; not true to life.
- Q3 202560/100
Buyers praised the lens for astrophotography and travel use, but several found manual focusing difficult and the build quality lacking.
- Good for astrophotography and travel due to lightweight design and versatile zoom range.
- Manual focus is hard to use smoothly, especially for beginners.
- Heavier than expected, with build quality concerns mentioned.
- Affordable and decent for amateurs, but not without compromises.
- Q1 202433/100
Buyers found the lens hard to focus manually and unusable without a tripod. One unit arrived with a broken adapter. Image quality was decent for the low price.
- Manual focusing is extremely difficult, especially for sun photography.
- Lens is unusable without a sturdy tripod.
- One reviewer received a lens with a broken camera adapter.
- Decent image quality for under $100, exceeding expectations at that price.
Based on 22 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Telephoto |
| Focal Length Min | 420 |
| Focal Length Max | 800 |
| Coating | Ultra Multi Coating |
Aperture
| Max Aperture | f/16 |
| Min Aperture | 8.3-16 |
| Constant | No |
Build
| Mount | Sony E |
| Format | full-frame |
| Weight | 0.8 kg / 1.8 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | Yes |
Focus
| Min Focus Distance | 800 |
vs Competition
| Spec | Desiontal 420-800 420-800mm | Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR | Altura Photo NIKKOR YZ0308 | Fujifilm XC XC13-33mm F3.5-6.3f OIS | Viltrox AF 40mm F2.5 | Canon EF EF-S 18-135mm f/3.5-5.6 IS |
|---|---|---|---|---|---|---|
| Focal Length | 420-800mm | 16-50mm | - | 13-33mm | 40mm | 18-135mm |
| Max Aperture | f/16 | f/3.5 | f/3.5 | f/3.5 | f/2.5 | f/5.6 |
| Mount | Sony E | Nikon Z | Screw-on lens fits camera lenses with a 55mm front filter thread | Fujifilm X | Nikon Z | Canon EF-S |
| Stabilization | true | true | true | true | true | true |
| Weather Sealed | false | false | false | false | false | false |
| Weight (g) | 821 | 135 | 320 | 132 | 397 | 98 |
| AF Type | manual focus only | Stepping Motor | STM | STM | STM | Micro Motor |
| Lens Type | telephoto | zoom | wide-angle | standard-zoom | - | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Desiontal 420-800 420-800mm | 12.8 | 29.6 | 24.9 | 48.1 | 45.2 | 42.2 | 15.8 | 69.1 | 69.8 | 83.4 |
| Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR Compare | 87.4 | 75.9 | 92.6 | 44.4 | 73.8 | 77.9 | 0 | 82.9 | 76.8 | 95.3 |
| Altura Photo NIKKOR YZ0308 Compare | 87.4 | 75.9 | 73.5 | 96.2 | 45.2 | 77.9 | 0 | 33.3 | 71.5 | 83.4 |
| Fujifilm XC XC13-33mm F3.5-6.3f OIS Compare | 87.4 | 85.5 | 93 | 48.1 | 78.4 | 77.9 | 0 | 77.5 | 3.3 | 93.4 |
| Viltrox AF 40mm F2.5 Compare | 87.4 | 85.9 | 52.7 | 96.8 | 41.3 | 89.1 | 80.4 | 33.3 | 80.5 | 83.4 |
| Canon EF EF-S 18-135mm f/3.5-5.6 IS Compare | 53.7 | 52.9 | 97.1 | 91 | 81.9 | 54.7 | 0 | 95.7 | 44.9 | 83.4 |
Price
Value & Pricing
Amazon.ca 2 offers From CA$81
Price History
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
