Big Mike's BM-SLY420NK-K2 420-1600mm
The 420-1600mm zoom range and constant f/8.3 aperture offer extreme reach in a lightweight 989g body, but the lens is entirely manual focus with no electronic communication. Its F-mount compatibility spans a wide range of Nikon DSLRs, making it a low-cost entry point for super-telephoto photography. This lens is best for budget-conscious Nikon DSLR users who are comfortable with manual focus and want to experiment with long-distance wildlife or sports shots in good light.
Focal length 420-1600mm
Aperture f/8.3
Mount Nikon F
stabilization Yes
Weight 989 g
af type Autofocus
lens type telephoto
41 Overall Score
Price MX$0
No listings available
Snapshot
Pros & Cons
Pros
- Strong versatility (86th percentile) 86th
- Strong stabilization (83rd percentile) 83rd
Cons
- Below average user sentiment (4th percentile)
- Below average build (5th percentile)
- Below average optical (18th 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.
55/100Our AI sentiment read
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Telephoto |
| Focal Length Min | 420 |
| Focal Length Max | 1600 |
Aperture
| Max Aperture | f/8.3 |
| Constant | Yes |
Build
| Mount | Nikon F |
| Weight | 1.0 kg / 2.2 lbs |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | Yes |
Focus
| Min Focus Distance | 420 |
vs Competition
| Spec | Big Mike's BM-SLY420NK-K2 420-1600mm | Nikon NIKKOR Z 17-28mm f/2.8 | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Panasonic Leica DG Vario-Elmarit H-ES12060 | Canon RF 28-70mm f/2.8 IS STM |
|---|---|---|---|---|---|---|
| Focal Length | 420-1600mm | 17-28mm | 28-75mm | 10-18mm | 12-60mm | 28-70mm |
| Max Aperture | f/8.3 | f/2.8 | f/2.8 | f/2.8 | f/2.8 | f/22 |
| Mount | Nikon F | Nikon Z | Sony E | Sony E | Micro Four Thirds | Canon RF |
| Stabilization | true | false | false | false | true | true |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 989 | 450 | 540 | 260 | 320 | 495 |
| AF Type | Autofocus | Stepping Motor | VXD | Autofocus | linear motor | STM |
| Lens Type | telephoto | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Big Mike's BM-SLY420NK-K2 420-1600mm | 54.6 | 53.9 | 5 | 60.7 | 18.4 | 56 | 3.6 | 86 | 58.9 | 83.2 |
| Nikon NIKKOR Z 17-28mm f/2.8 Compare | 87 | 88.1 | 73.7 | 86.3 | 87 | 85.8 | 90.8 | 68.1 | 64.5 | 38 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88.1 | 67.3 | 87.3 | 87.8 | 85.8 | 80.3 | 78.2 | 83 | 38 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.5 | 87.4 | 93.3 | 81.6 | 85.8 | 80.3 | 69.1 | 68.7 | 38 |
| Panasonic Leica DG Vario-Elmarit H-ES12060 Compare | 98 | 88.1 | 83.2 | 50.4 | 90.2 | 85.8 | 44.2 | 93.1 | 63.4 | 83.2 |
| Canon RF 28-70mm f/2.8 IS STM Compare | 87 | 26 | 70.2 | 80.4 | 85 | 22.6 | 98.1 | 77.2 | 87.8 | 98.5 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
