Brightin Star 7.5mm F2.8 III 8mm
Its extraordinary 190-degree field of view and bright f/2.8 aperture capture expansive skies and tight interiors with minimal light falloff, aided by an 11-element, 9-group optical design that includes low-dispersion glass. The lens weighs just 260g and uses a 5-blade aperture to produce 10-point star effects, making it a compact, creative tool for dramatic wide-angle shots. This manual-focus fisheye is best for astrophotographers and architecture shooters on Canon EF-M mount who prioritize a distinct, sweeping perspective over autofocus convenience.
Snapshot
The 30-Second Version
A 190-degree field of view and stabilization in the 79th percentile make this sub-$140 lens a standout value for Canon EF-M fisheye fun. But it's manual focus only, the aperture often locks at f/5.6, and macro performance is one of the worst we've seen at the 9th percentile. For creative wide-angle shots, it's a cheap ticket to a unique look if you can live with its quirks.
Pros & Cons
Pros
- 190-degree field of view for dramatic ultra-wide shots 88th
- Stabilization at the 79th percentile helps handheld shooting 81th
- Solid metal build praised by most owners 69th
- Excellent value for around $140
- Decent bokeh (71st percentile) for a fisheye
Cons
- Manual focus only, no autofocus support
- Fixed aperture at f/5.6 despite f/2.8 labeling
- Edge softness drags optical score to 43rd percentile
- Terrible macro capability (9th percentile)
- Flimsy lens cover design falls off easily
What owners think
The Word on the Street
The proof
Performance
Stabilization is the surprise hero here, placing this lens well above average at the 79th percentile. It helps keep handheld fisheye shots usable, which is a godsend when you're framing such an extreme view. Aperture clocked in at the 75th percentile, but there's a catch: we can't confirm if it actually opens to f/2.8, as multiple users report a fixed f/5.6. Bokeh comes in at a solid 71st percentile, giving it a decent blur quality for a fisheye. On the flip side, optical sharpness drags it down, with center clarity that's acceptable but edges that go soft fast. That nets a 43rd percentile overall optical score, so don't expect corner-to-corner critical detail. Macro performance is abysmal at the 9th percentile, effectively a non-feature.
Specifications
Full Specifications
Optics
| Type | fisheye |
| Focal Length Min | 8 |
| Focal Length Max | 8 |
| Elements | 11 |
| Groups | 9 |
| ED Elements | 2 |
Aperture
| Max Aperture | 16 |
| Min Aperture | 2.8 |
| Constant | No |
| Diaphragm Blades | 5 |
Build
| Mount | Canon EF-M |
| Format | APS-C |
| Weight | 0.3 kg / 0.6 lbs |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | Yes |
Focus
| Min Focus Distance | 150 |
vs Competition
Stacked against the competition, this lens occupies a niche no one else touches at this price. The Meike 50mm F1.8 and Viltrox AF 56mm are sharper and have autofocus, but they're normal focal lengths, not fisheyes. The Nikon NIKKOR Z DX 50-250mm is a zoom lens with broader versatility and better optical quality, but it's also over twice the price and nowhere near 190 degrees. If you want a true fisheye on Canon EF-M, the Brightin Star undercuts everything else and gives you a shot you simply can't get with standard glass, even if you sacrifice autofocus and aperture consistency.
| Spec | Brightin Star 7.5mm F2.8 III 8mm | 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 | Panasonic LUMIX G Leica DG Vario-Elmarit H-ES50200 | Canon EF-S 18-135mm f/3.5-5.6 IS USM |
|---|---|---|---|---|---|---|
| Focal Length | 8mm | 16-300mm | 18-300mm | 28-400mm | 50-200mm | 18-135mm |
| Max Aperture | 16 | f/3.5 | f/3.5 | f/4 | f/2.8 | f/3.5 |
| Mount | Canon EF-M | Sony E | Fuji X | Nikon Z | Micro Four Thirds | Canon EF-S |
| Stabilization | true | true | true | true | true | true |
| Weather Sealed | false | true | false | true | true | false |
| Weight (g) | 260 | 615 | 92 | 726 | 655 | 515 |
| AF Type | manual focus only | HLA | VXD linear motor | STM | linear motor | STM |
| Lens Type | fisheye | zoom | zoom | zoom | telephoto | zoom |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| Brightin Star 7.5mm F2.8 III 8mm | 15.1 | 10.3 | 68.8 | 88.3 | 51.1 | 51.3 | 51.8 | 34 | 36.5 | 80.8 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 55 | 85.6 | 57.6 | 86.4 | 98.9 | 78.8 | 0 | 99.6 | 77.9 | 99 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.2 | 76.8 | 96.3 | 88.3 | 73.9 | 78.8 | 30.1 | 99.2 | 83 | 80.8 |
| Nikon NIKKOR Z 28-400mm f/4-8 VR Compare | 86.2 | 79.7 | 50.1 | 81.6 | 97 | 73.3 | 0 | 98.9 | 83 | 98.2 |
| Panasonic LUMIX G Leica DG Vario-Elmarit H-ES50200 Compare | 98.2 | 87.2 | 53.9 | 22.4 | 95.9 | 85.1 | 91.6 | 88.3 | 65.9 | 96.3 |
| Canon EF-S 18-135mm f/3.5-5.6 IS USM Compare | 86.2 | 76.8 | 45.9 | 32.9 | 79.5 | 78.8 | 0 | 96 | 77.9 | 92.3 |
Price
Value & Pricing
At a street price hovering around $140, the price-to-fun ratio is hard to fault. You get a 190-degree perspective and stabilization that most budget fisheyes lack. Just be warned: online prices are a mess, with some third-party sellers listing this lens at an absurd $28,978 (likely a data error). Stick to trusted storefronts like Amazon, where it's consistently under $150, and you're getting an affordable creative tool that punches above its pay grade for wide-angle experimentation.
Read more
Overview
The Brightin Star 7.5mm F2.8 III lands in our database with a 79th percentile stabilization score and a 71st percentile bokeh rating, both impressive for a sub-$140 lens. But the overall optical performance is just 43rd percentile, weighed down by soft edges and a fixed aperture that many users report is stuck at f/5.6, not the advertised f/2.8. For Canon EF-M mirrorless shooters, it's a manual focus affair through and through, so autofocus is off the table entirely. Still, that 190-degree field of view is a unique hook.
Common Questions
Q: Is this lens really f/2.8 or is it fixed at f/5.6?
The spec sheet says f/2.8, but many owners report a fixed f/5.6 aperture. Our database ranks it at the 75th percentile for aperture, which suggests it can open up, but real-world results vary. Check sample images from other Canon EF-M users before buying if fast aperture matters to you.
Q: Can it autofocus on Canon EF-M cameras?
No, it's fully manual focus. The 54th percentile AF score simply reflects that some manual lenses score even lower in our database, but there's no motor. You'll rely entirely on focus peaking or zone focusing.
Q: How soft are the edges really?
The optical score sits at the 43rd percentile, mainly due to edge softness. Center sharpness is adequate for casual use, but corners get noticeably fuzzy, especially wide open. Stopping down helps a bit, but don't expect pro-level corner-to-corner sharpness.
Who Should Skip This
Autofocus-dependent shooters and video creators should pass—manual focus is a nonstarter for fast-moving scenes. Macro enthusiasts will be disappointed by the 9th percentile macro score, meaning close-up detail is a blurry mess. Travel photographers will also struggle, as the low 32.1/100 travel score underscores poor low-light performance and no weather sealing. If edge-to-edge sharpness matters, the 43rd percentile optical quality will frustrate you. This lens lives for creative fun, not critical work.
Verdict
By the numbers, this lens is a rollercoaster: stabilization (79th percentile) and bokeh (71st) shine, but optical quality (43rd) and especially macro (9th) are rough. User sentiment sits at a middling 51st percentile, yet overall satisfaction is surprisingly high with a 4.2-star average across 1,280 reviews. For Canon EF-M shooters itching to try fisheye photography without a big investment, the Brightin Star 7.5mm is a scrappy, fun choice. Just know you'll be wrestling with manual focus, a wonky lens cap, and an aperture that may not do what the box says.