Meike 3.5mm f/2.8 Fisheye 4mm

A pocket-sized 220-degree circular fisheye that's sharp, metal, and cheap. If you want wild perspectives without wild prices, this is it.

For a lens this cheap, the optics are surprisingly sharp. The 10 elements in 7 groups with multi-layer nano-coating keep flare under control, and the f/2.8 aperture lets in enough light for night-sky shots without cranking ISO to the moon. The 95mm minimum focus distance means you can get close to subjects and still keep that wild circular perspective. Manual focus only, but at 4mm with a 220-degree field of view, basically everything is in focus anyway. The real surprise is the build quality. All-metal barrel, 190 grams, feels like it costs twice as much. The tight mount on some MFT bodies is a minor annoyance, but it also means zero wobble once it's on.

The Meike 3.5mm f/2.8 doesn't really have direct competitors at this price point. The Nikon 6mm f/2.8 fisheye that one reviewer mentioned is a legendary lens, but it's huge, heavy, and costs thousands. The Tamron 28-300mm and Viltrox 85mm are completely different beasts, standard zooms and portrait primes that don't touch the circular fisheye niche. If you want a circular fisheye on MFT, this Meike is basically the only game in town under $500. The closest alternative would be adapting an old manual fisheye, but that adds bulk and hassle.

At $136-140 USD, this lens is an absolute steal for what it does. You're getting a solid metal fisheye with sharp optics and a unique 220-degree perspective for less than most kit lenses. If you've ever wanted to try circular fisheye photography without selling a kidney, this is the way in.

The Meike MK-3.5mm f/2.8 is a tiny, all-metal circular fisheye that turns your Micro Four Thirds camera into a 220-degree fun machine. It's not a lens you'll use every day, but when you want that full-circle, planetarium-style shot, nothing else at this price comes close. The one thing to know: this is a specialty lens that nails its specialty, and it costs less than a decent dinner for two.

If you're looking for a general-purpose wide-angle lens for landscapes or vlogging, this isn't it. The circular image circle is a very specific look, and you'll be cropping heavily if you want a normal rectangular photo. Go get a standard wide-angle prime or zoom instead. This is for people who want the full fisheye circle effect.

Buy it if you want to play with circular fisheye photography. The Meike 3.5mm f/2.8 is sharp, well-built, and stupidly affordable. It's not a lens for everyday shooting, but for creative projects, astrophotography, and just having fun, it's a no-brainer. The tight mount and mediocre lens cap are minor annoyances, not dealbreakers.