Artra Lab Oculilumen Oculilumen 7.5mm f/2.8 Fisheye 8mm
Its 7.5mm f/2.8 fisheye design captures a 130° field of view and uses a 10-blade diaphragm for smooth bokeh, while the fast aperture handles dim stages or underwater lighting. The lightweight 320g body and multilayer nano coating—which resists oil, dust, and scratches—add durability without slowing handheld work. This lens suits sports and concert photographers who want precise manual focus to produce exaggerated, immersive perspectives.
Snapshot
The 30-Second Version
A cheap, all-manual fisheye that's weirdly great for close-up chaos. Optical quality is middling overall, but you're buying it for the distortion and the fun factor, not pixel-perfect corners.
Pros & Cons
Pros
- Delivers that unmistakable circular fisheye distortion for creative shots. 98th
- Solid metal construction feels way more expensive than it is. 91th
- Freakishly close 12cm minimum focus opens up fun pseudo-macro framing.
- Smooth manual focus ring with a nice long throw.
Cons
- Edge sharpness is pretty mushy, even stopped down.
- No autofocus limits you to slower, deliberate shooting.
- f/2.8 is fine, but not as bright as some other cheap manual primes.
- Zero weather sealing means dusty adventures are a gamble.
What owners think
The Word on the Street
The proof
Performance
Optically, it's just okay. Center sharpness is decent at f/5.6, but the edges stay soft even when stopped down, and flaring can creep in despite the nano coating. The real surprise is how close it focuses, down to 12cm. That lets you pull off exaggerated near-far compositions that look wild, and the manual focus ring is damped nicely enough to nail those shots with patience.
Specifications
Full Specifications
Optics
| Type | fisheye |
| Focal Length Min | 8 |
| Focal Length Max | 8 |
| Elements | 9 |
| Groups | 8 |
| Coating | Multilayer Nano Coating |
Aperture
| Max Aperture | 22 |
| Min Aperture | 2.8 |
| Constant | No |
| Diaphragm Blades | 10 |
Build
| Mount | Micro Four Thirds |
| Format | APS-C |
| Weight | 0.3 kg / 0.7 lbs |
AF & Stabilization
| AF Type | manual focus only |
| Stabilization | No |
Focus
| Min Focus Distance | 120 |
vs Competition
Direct MFT fisheye competition is scarce. The Samyang 7.5mm f/3.5 is a close rival, often cheaper but a third of a stop slower and with equally soft corners. If you want autofocus and a wider standard view, the Viltrox 9mm f/1.8 is a better all-rounder, though it's not a true fisheye. And for sheer versatility, the Sigma 10-18mm f/2.8 zoom runs circles around this lens, but it can't touch that trippy distortion.
| Spec | Artra Lab Oculilumen Oculilumen 7.5mm f/2.8 Fisheye 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 2166 | Viltrox 13mm F1.4 f/1.4 E STM Auto Focus Ultra Wide Angle | Panasonic LUMIX S S-R28200 |
|---|---|---|---|---|---|---|
| Focal Length | 8mm | 16-300mm | 18-300mm | 55-200mm | 13mm | 28-200mm |
| Max Aperture | 22 | f/3.5 | f/3.5 | f/4 | f/1.4 | f/4 |
| Mount | Micro Four Thirds | Sony E | Fuji X | Nikon F | Sony E | L-Mount |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | true | false | false | false | true |
| Weight (g) | 320 | 615 | 92 | 255 | 415 | 413 |
| AF Type | manual focus only | HLA | VXD linear motor | Silent Wave Motor | STM | Autofocus |
| Lens Type | fisheye | zoom | zoom | telephoto | Wide-Angle | macro |
| Compare | Compare | Compare | Compare | Compare |
| Product | Af | Bokeh | Build | Macro | Optical | Aperture | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|
| Artra Lab Oculilumen Oculilumen 7.5mm f/2.8 Fisheye 8mm | 14 | 37.9 | 59.3 | 90.5 | 44.5 | 24.4 | 34.2 | 98.2 | 36 |
| Sigma Contemporary 16-300mm f/3.5-6.7 DC OS Compare | 54.5 | 84.3 | 59 | 85.9 | 98.9 | 76.9 | 99.6 | 78 | 99.1 |
| Tamron Di III 18-300mm f/3.5-6.3 Di III-A VC VXD Compare | 98.3 | 74.9 | 96.6 | 87.7 | 74.6 | 76.9 | 99.2 | 83.1 | 81.3 |
| Nikon Nikkor 2166 Compare | 54.5 | 69.6 | 77.4 | 81.3 | 66.8 | 71.2 | 85.3 | 83.1 | 92.6 |
| Viltrox 13mm F1.4 f/1.4 E STM Auto Focus Ultra Wide Angle Compare | 86.9 | 96.6 | 42.1 | 89.4 | 82.6 | 96.4 | 34.2 | 74 | 81.3 |
| Panasonic LUMIX S S-R28200 Compare | 54.5 | 77.8 | 74.5 | 70.8 | 91.2 | 71.2 | 95.6 | 62.2 | 99.5 |
Price
Value & Pricing
At $250 to $340, this lens is priced squarely in impulse territory for a creative add-on. It's not a workhorse, but if you treat it as a special effect tool, the cost per weird smile is excellent. Just don't expect it to replace a proper wide zoom.
B&H Photo 1 offers From CA$340
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Overview
The Artra Lab Oculilumen 7.5mm f/2.8 is a pure manual fisheye built for Micro Four Thirds shooters who want that warped, 130-degree look without breaking the bank. It's small, all-metal, and feels way more solid than the price suggests, though you definitely need to know what you're getting into.
Common Questions
Q: Does this lens work for astrophotography?
You can try it, but f/2.8 is only so-so for light gathering, and edge softness will make stars look mushy in the corners. Better options exist if astro is your main goal.
Q: Is it weather-sealed?
No, there's no weather sealing at all, so avoid rain, dust storms, and splashing waves.
Q: Will it work on a full-frame camera with a speed booster?
It's designed for MFT coverage, and even with a booster the image circle won't cover larger sensors. Stick to Micro Four Thirds bodies.
Who Should Skip This
Skip this if you need autofocus, weather sealing, or corner-to-corner sharpness. Videographers who rely on smooth rack focus pulls will find manual-only operation frustrating, and anyone expecting a crisp, distortion-free ultrawide should look at a standard zoom instead.
Verdict
Grab this if you're an MFT shooter itching to experiment with fisheye perspectives, especially close-up details that pop with that exaggerated depth. It's a one-trick pony, but it does the trick with charm and a price that's easy to swallow.
