Summary: The Pentax K-01 is a bit of an odd duck. It's a mirrorless camera that's as big as digital SLRs, which sort of defeats the purpose of being mirrorless in the first place. Photo quality is among the best out there, but other cameras offer better AF performance and more compact/usable designs.
Pros: Excellent photos quality; low noise through ISO 1600 in low light and 6400 in good light, Eye-catching design (love it or hate it) with solid build quality, Huge lens selection due to use of K-mount; all lenses will have shake reduction built-in, courtesy of sensor-shift IS system, Lots of manual...
Cons: Autofocus system lags behind the competition, especially in low light, Chunky body defeats the purpose of mirrorless design; ergonomics leave something to be desired, Display on LCD screen can be hard to see in bright light, Redeye a problem, no in-camera removal tool, Unusually severe rolling sh...
Summary: The K-mount is a boon if you have a stock of compatible lenses, but it means the Pentax K-01 needs to be large to accommodate it. If you're happy to accept this, you won't be disappointed by the excellent image quality. The price below is for the body only.
Pros: Wide selection of compatible lenses; Pin-sharp results with 40mm pancake lens; Good colour reproduction; Decent noise control.
Cons: Some degradation when shooting movies while walking; Large chassis.
Excerpt: The K-01 is one of the best-looking specimens in the compact system camera category. Thank industrial designer Marc Newson, who simplified the exterior and controls while preserving Pentax’s K lens mount and finding room for advanced guts that exceed the company’s top DSLR in some areas.
Pros: Shoots video at three resolutions and 11 frame rates. Works with Pentax’s entire range of lenses.
Cons: No dedicated viewfinder. What weight savings?
Summary: Available for £679 with a lens, the K-01 carries a similar asking price as the Olympus E-P3 . The Olympus is as expensive as non-viewfinder Compact System Cameras come, so Pentax’s mirrorless model is also a pricey purchase. The Pentax K-01 isn’t like anything else on the market.
Pros: Great image quality, K-mount compatibility with all Pentax lenses
Cons: Noisy autofocus isn’t fast enough, no viewfinder possible, large body size, lack of prominent grip
Excerpt: Possessing a 16MP APS-C CMOS sensor, the K-01 is a new mirrorless system camera from Pentax that is compatible with all of its existing K-mount lenses. It features a unique body designed by renowned designer, Marc Newson, but is the K-01 a competent camera or is it just all looks and no substance?
Pros: Works with K-mount lenses, Good image quality, Simple, clean design
Cons: Unique design may not appeal to everyone, Bulkier than other mirrorless system cameras, Heavy, Pricey
Conclusion: Larger than its peers, but interestingly designed, the Pentax K-01 can capture sharp photos in all types of light and delivers full compatibility with every Pentax K-mount lens ever produced.
Pros: Extremely sharp lens. Excellent high ISO performance. Full compatibility with Pentax K-mount lenses. In-body image stabilization. Selectable video frame rates.
Cons: Larger than other cameras in its class. Slow autofocus. No EVF option. Fixed rear LCD.
Summary: As photographers, we should be interested in how our photographs, not our cameras, look and to judge the K-01's appearance in this test would be purely subjective. What is important about a camera, though, is that it feels comfortable for a photographer to use, and while all the K-01's controls are...