Big Mike's SLY500 500mm
Focal length 500-1000mm
Aperture f/8
Mount T Mount
stabilization Yes
Weight 1157 g
af type manual focus only
lens type telephoto
37 Overall Score
Price $120
Snapshot
Pros & Cons
Pros
- Strong stabilization (81st percentile) 81st
- Strong versatility (72nd percentile) 72nd
Cons
- Below average user sentiment (6th percentile)
- Below average af (15th percentile)
- Below average build (15th 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 held steady over time
62/100Our AI sentiment read
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Telephoto |
| Focal Length Min | 500 |
| Focal Length Max | 1000 |
| Coating | multi-coated |
Aperture
| Max Aperture | f/8 |
| Min Aperture | f/8 |
| Constant | Yes |
Build
| Mount | T Mount |
| Weight | 1.2 kg / 2.6 lbs |
| Filter Thread | 67 |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | Yes |
Focus
| Min Focus Distance | 500 |
vs Competition
| Spec | Big Mike's SLY500 500mm | Tamron Di III VC 28-300mm f/4-7.1 VXD | Sony E PZ 16-50mm f/3.5-5.6 OSS | Nikon NIKKOR 2178 | Viltrox Air 20mm F2.8 FE | Pentax Limited Series HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom |
|---|---|---|---|---|---|---|
| Focal Length | 500-1000mm | 28-300mm | 16-50mm | 16-85mm | 20mm | 20-40mm |
| Max Aperture | f/8 | f/4 | f/3.5 | f/3.5 | f/2.8 | f/2.8 |
| Mount | T Mount | Sony E | Sony E | Nikon F | Sony E | Pentax K |
| Stabilization | true | true | true | true | true | true |
| Weather Sealed | false | true | true | false | false | true |
| Weight (g) | 1157 | 590 | 107 | 485 | 157 | 283 |
| AF Type | manual focus only | VXD linear motor | Autofocus | AF-S | STM | Autofocus |
| Lens Type | telephoto | zoom | zoom | zoom | wide-angle | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Big Mike's SLY500 500mm | 14.5 | 52.9 | 14.9 | 56.3 | 41.7 | 54.7 | 5.7 | 72.2 | 62.7 | 80.9 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 97.7 | 81.1 | 63.7 | 85 | 96.4 | 69.4 | 91 | 97.9 | 50.2 | 80.9 |
| Sony E PZ 16-50mm f/3.5-5.6 OSS Compare | 54.1 | 78.7 | 98.3 | 42.5 | 66.5 | 80.4 | 64 | 83.5 | 80 | 92.8 |
| Nikon NIKKOR 2178 Compare | 54.1 | 78.7 | 55.2 | 64.3 | 67.5 | 80.4 | 80.8 | 94.3 | 90.2 | 92.8 |
| Viltrox Air 20mm F2.8 FE Compare | 85.5 | 84.6 | 88.8 | 91.7 | 69.8 | 86.5 | 0 | 33.6 | 85.5 | 80.9 |
| Pentax Limited Series HD DA 20-40mm F2.8-4 Limited DC WR Wide Zoom Compare | 54.1 | 89.2 | 85.9 | 96.7 | 59.3 | 86.5 | 45.3 | 72.2 | 54.6 | 80.9 |
Price
Value & Pricing
From $120
Amazon 1 offer From $120
We started tracking prices for this product on Aug 14, 2026. The chart appears once we have more data.
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
