Mitakon Zhongyi Speedmaster 20mm f/0.95 20mm

The Mitakon 20mm f/2 4.5x Super Macro lens delivers extreme magnification for Pentax K at a bargain price, but its awful bokeh, soft corners, and finicky manual operation make it a love-it-or-hate-it tool. It's brilliant for dedicated macro shooters on a budget, and a terrible choice for literally anything else.

In our macro performance database, this lens literally tops the charts. It's in the absolute best tier for its category, and the 4.5x magnification is the star of the show. You can fill the frame with the eye of a housefly or the texture of a grain of salt at a minimum working distance of just 0.8 inches. That's insane reach for a lens you can pocket. The center sharpness is acceptable for documenting tiny subjects, but the optical quality as a whole is a real letdown. It falls into the bottom 1% of all lenses we've tested, with soft corners and noticeable distortion that get ugly fast once you step away from the macro sweet spot.

The bokeh is another weak point. That three-blade aperture creates some of the harshest background rendering we've seen, and it's not something you can easily fix in post. For scientific or purely documentary work where aesthetics don't matter, it's fine. But if you're hoping for dreamy macro images with smooth out-of-focus areas, you'll be disappointed. And because there's no stabilization, you'll need a rock-solid tripod and good lighting to get the most out of the extreme magnifications. Handheld shots at 4.5x are basically impossible unless you have surgeon hands and a burst of flash.

Stacking the Mitakon against general-purpose primes like the Fujifilm XF 35mm F2 XC or the Sirui Sniper 56mm Autofocus is like comparing a scalpel to a butter knife. Those lenses are built for portraits and everyday shooting with snappy autofocus and smooth bokeh, while the Mitakon is a hyper-specialized macro tool that falls apart at normal distances. For Pentax K users, direct competition at this magnification is practically nonexistent in this price range. You might look at a Laowa 25mm f/2.8 2.5-5x macro, but that's pricier and still manual. The real alternative is a set of extension tubes on a standard macro lens, which can get you similar magnification with better overall image quality at the cost of a less convenient setup. If you need 4.5x now and on a budget, the Mitakon wins by default. But if image quality matters more than raw magnification, skip it and explore extension tube combos or a used Pentax 100mm f/2.8 macro.

At its cheapest, around $149, this lens is a steal if you desperately need 4.5x magnification and can live with its flaws. But the price wobbles a lot across vendors, climbing as high as $369 depending on the seller. That upper end puts it dangerously close to used traditional macro lenses with autofocus and way better image quality, albeit with lower magnification. The value here is all about that extreme close-up ability. If that's your top priority, grab it when you see a low price and don't look back. For anyone else, even an old manual macro lens paired with extension tubes will give you more pleasant images for less money.

If you're deep into macro photography and hunting for extreme magnification on a Pentax K body without blowing four figures, the Mitakon Zhongyi Creator 20mm f/2 4.5x Super Macro lens probably crossed your radar. It's a weird little manual prime that can get you up to 4.5x life-size for somewhere between $149 and $369, depending on where you shop. That's a wild bargain if you only care about getting impossibly close to your subject. But this isn't your average 20mm lens. It's a specialized tool that strips away every convenience, and the trade-offs hit hard the moment you use it for anything other than its one party trick.

The build quality is surprisingly solid for the price. The metal barrel feels tough and the whole thing weighs just 230g, so it won't weigh down your bag on a macro hike. The manual focus ring is damped well enough for precise adjustments, which you'll be doing constantly because there's no autofocus, no stabilization, and a razor-thin depth of field at these magnifications. The three-blade diaphragm is a head-scratcher though. It produces aperture shapes that make backgrounds look jagged and distracting, so don't expect creamy bokeh.

This lens is for macro purists who love the craft of slowly dialing in focus on a tripod, probably with a flash and a rail. If that sounds like your jam, the Mitakon delivers detail that most lenses can't even approach. But if you're just curious about macro or want a lens that can pull double duty for portraits or walkaround shots, this thing will fight you every step of the way.

Skip this lens if you need autofocus, smooth background blur, or sharp images outside of macro work. Videographers should run far away (it scored a pitiful 14/100 in our video tests). Casual photographers who just want to dabble in close-ups will find the Mitakon more frustrating than fun. Instead, grab a used Pentax 100mm f/2.8 macro with autofocus, or simply add extension tubes to a lens you already own. The extreme 4.5x magnification here is overkill for anyone not obsessed with microscopic detail.

Buy this lens only if you know exactly what you're signing up for. It's a dedicated super macro instrument that rewards patience and punishes anyone who expects point-and-shoot convenience. Bug photographers who already work on a tripod with manual focus and flash will adore the crazy magnification and won't mind the optical quirks. But if you're new to macro or want a versatile lens that can handle portraits or everyday snaps, this isn't it. The learning curve is real, and the background blur is so ugly you'll probably crop it out anyway. For the right weirdo, it's brilliant. For everyone else, it's a paperweight.