New
Kosiy 20100
Focal length 105mm
Weight 630 g
34 Overall Score
Price R$7,969
Snapshot
Pros & Cons
Pros
- Strong aperture (70th percentile) 70th
- Strong bokeh (68th percentile) 68th
Cons
- Below average macro (12th percentile)
- Below average build (16th percentile)
- Below average optical (18th percentile)
- Below average versatility (34th percentile)
The proof
Performance
Specifications
Full Specifications
Optics
| Focal Length Min | 105 |
| Focal Length Max | 105 |
Aperture
| Min Aperture | f/2.8 |
Build
| Weight | 0.6 kg / 1.4 lbs |
vs Competition
| Spec | Kosiy 20100 | Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR | Tamron Di III 28-75mm f/2.8 VXD G2 | Sigma Contemporary 10-18mm f/2.8 DC DN | Sony G SELP28135G.SYX | Panasonic LUMIX S S-R2060 |
|---|---|---|---|---|---|---|
| Focal Length | 105mm | 18-140mm | 28-75mm | 10-18mm | 28-135mm | 20-60mm |
| Max Aperture | - | f/3.5 | f/2.8 | f/2.8 | f/4 | f/3.5 |
| Mount | - | Nikon Z | Sony E | Sony E | Sony E | L-Mount |
| Stabilization | false | true | false | false | true | false |
| Weather Sealed | false | true | true | true | true | true |
| Weight (g) | 630 | 315 | 540 | 260 | 420 | 350 |
| AF Type | - | stepping motor | VXD | Autofocus | SSM | stepping motor |
| Lens Type | - | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | Versatility | Stabilization |
|---|---|---|---|---|---|---|---|---|
| Kosiy 20100 | 54.6 | 68.4 | 16.3 | 11.8 | 18.4 | 69.8 | 33.6 | 37.9 |
| Nikon NIKKOR Z DX 18-140mm f/3.5-6.3 VR Compare | 86.9 | 77.7 | 83.9 | 82.6 | 88.5 | 79.7 | 96.2 | 96.6 |
| Tamron Di III 28-75mm f/2.8 VXD G2 Compare | 54.6 | 88 | 67.2 | 87.3 | 87.8 | 85.7 | 78.2 | 37.9 |
| Sigma Contemporary 10-18mm f/2.8 DC DN Compare | 54.6 | 83.5 | 87.3 | 93.3 | 81.6 | 85.7 | 69.1 | 37.9 |
| Sony G SELP28135G.SYX Compare | 94.2 | 80.1 | 75.5 | 31.1 | 86.9 | 69.8 | 92.3 | 92.8 |
| Panasonic LUMIX S S-R2060 Compare | 86.9 | 86.1 | 80.6 | 66.2 | 76.4 | 79.7 | 81.4 | 37.9 |
Price
Value & Pricing
From R$7,969
Amazon.com.br 1 offer From R$7,969
We started tracking prices for this product on Jul 18, 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.
