CANON 22MM F/2 STM REVIEW

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Review by Klaus Schroiff, published September 2015IntroductionWelcome khổng lồ our first reviews for the Canon EOS M system! Canon has been very reluctant in the marketing as well as the developmentof their mirrorless system ... Thus also our limited enthusiasm to lớn "invest" our time into it. The first two EOS M cameras were downrightmiserable and a phối of just four lenses is hardly thrilling compared khổng lồ the wealth of options that you canaccess on the other side of the mirrorless fence. Odd kinh doanh statements that small DSLRs are better anyway certainly didn"t exactlyhelp khổng lồ boost sales and Canon didn"t even bother to market the EOS M3 in the US at the time of the first announcement.However, now it seems as if Canon finally beginning to realize that they can"t turn back the time anymore.So let"s start simple ... With the Canon EF-M 22mm f/2 STM.As of the time of this article, it"s the only native prime lens of the system. However, it is a fairly interestingone. First of all it"s a pancake lens thus about as small as it gets but despite the small form size it is still prettyfast. Unlike its cousins (Canon EF-S 24mm f/2.8 STM (APS-C) và EF 40mm f/2.8 STM (Full Format)), it sticks to lớn thefield of view of a classic "35mm" lens (22mm * 1.6x) so it"s still wide enough for many applications - especiallystreet photography. The full bộ with the Canon EOS M3 is also super compact making it a take-me-everywhere option - almostat least.The build unique of this little Canon lens is pretty good which also originates in the simple fact that there aren"t manymoving parts in the first place. The lens consists of a mixed plastic/metal body based on a metal mount. The tiny focus ringoperates smoothly. The length of the lens (inner tube) changes a tiny bit during focusing operations. It"s also worth to lớn notethat the front element of the lens is surprisingly small despite the comparatively large max. Aperture.Just like other mirrorless systems, Canon EOS M uses a stepping motor (STM) for focus operations. This works noiselessly andreasonably fast although it stays short of the best competitors here. Manual focusing works "by-wire" thus you actually drivethe AF motor by turning the focus ring. This works nicely và it"s very precise actually.The product images provide a comparison of the EF-M 22mm f/2 STM (left) to the EF-S 24mm f/2.8 STM (for APS-C EOS DSLRs).You may debate whether the difference in size is significant (percentage-wise that is) but remember that the EF-M lens isa full stop faster & a bit wider!
Specifications

Equiv. Focal length	"35.2mm" (full format equivalent)
Equiv. Aperture	"f/3.2" (full format equivalent in terms of depth-of-field)
Optical construction	7 elements in 6 groups including 1x aspherical element
Number of aperture blades	7 (rounded)
min. Focus distance	0.15m (max. Magnification ratio 1:4.7)
Dimensions	60.9x23.7mm
Weight	105g
Filter size	43mm (non-rotating)
Hood	barrel shaped, optional
Other features	-