New
Panasonic MK-3.5mm F2.8 4mm
The 220° diagonal field of view and compact 190g build create a dramatic circular fisheye perspective on Micro Four Thirds bodies. Its f/2.8 aperture and close 95mm minimum focus distance allow creative wide-angle macro shots with a 10-element optical construction. This lens is best for M4/3 photographers who need a lightweight circular fisheye for panoramic and extreme wide-angle close-up work.
Focal length 4mm
Aperture 16
Mount Micro Four Thirds
Weight 190 g
af type manual focus only
lens type fisheye
48 Overall Score
Price MX$0
Snapshot
Pros & Cons
Pros
- Strong macro (92th percentile) 92th
- Strong build (84th percentile) 84th
- Strong user sentiment (81th percentile) 81th
Cons
- Below average af (15th percentile)
- Below average social proof (29th percentile)
- Below average optical (32th 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 cooled since launch
88/100Our AI sentiment read
Based on 5 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | fisheye |
| Focal Length Min | 4 |
| Focal Length Max | 4 |
| Elements | 10 |
| Groups | 7 |
Aperture
| Max Aperture | 16 |
| Min Aperture | 2.8 |
| Constant | No |
Build
| Mount | Micro Four Thirds |
| Format | micro-four-thirds |
| Weight | 0.2 kg / 0.4 lbs |
| Filter Thread | 61 |
AF & Stabilization
| AF Type | manual focus only |
Focus
| Min Focus Distance | 95 |
vs Competition
| Spec | Panasonic MK-3.5mm F2.8 4mm | Sigma Contemporary 16-300mm f/3.5-6.7 DC OS | Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD | Nikon NIKKOR Z 28-400mm f/4-8 VR | Canon EF-S 18-135mm f/3.5-5.6 IS USM | Sony E SELP1650 |
|---|---|---|---|---|---|---|
| Focal Length | 4mm | 16-300mm | 18-300mm | 28-400mm | 18-135mm | 16-50mm |
| Max Aperture | 16 | f/3.5 | f/3.5 | f/4 | f/3.5 | f/3.5 |
| Mount | Micro Four Thirds | Sony E | Fuji X | Nikon Z | Canon EF-S | Sony E |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | true | false | false |
| Weight (g) | 190 | 615 | 92 | 726 | 515 | 116 |
| AF Type | manual focus only | HLA | VXD linear motor | STM | STM | Stepping motor |
| Lens Type | fisheye | zoom | zoom | zoom | zoom | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Panasonic MK-3.5mm F2.8 4mm | 14.6 | 35.4 | 83.7 | 92.3 | 31.9 | 50 | 80.8 | 34.1 | 28.9 | 35.9 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.9 | 84.6 | 58.3 | 85.9 | 98.9 | 77.5 | 0 | 99.6 | 78 | 99 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 75.5 | 96.4 | 87.8 | 74.3 | 77.5 | 30.3 | 99.2 | 83.1 | 81.1 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.6 | 78.4 | 50.8 | 81.2 | 97 | 71.8 | 0 | 98.9 | 83.1 | 98.2 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.6 | 75.5 | 46.6 | 33.2 | 79.8 | 77.5 | 0 | 96 | 78 | 92.5 |
| Sony E SELP1650 Compare | 86.6 | 75.5 | 93.6 | 35.1 | 64.4 | 77.5 | 63.6 | 83.5 | 74.1 | 92.5 |
Usage Scores
A full written review is coming soon. The specs, scores, prices and charts above are always up to date.
