Canon EF-M 18-55 IS STM lens review by Ken Rockwell: This EF-M 18-55 IS STM is the best 18-55mm lens I've tested for Canon.

Canon EF-M 18-55 IS STM lens review by Ken Rockwell: This EF-M 18-55 IS STM is the best 18-55mm lens I've tested for Canon.
Canon EOS-M with EF-M 18-55mm f/3.5-5.6 IS STM Lens Review
Canon EF-M 18-55 IS STM lens review by Ken Rockwell: This EF-M 18-55 IS STM is the best 18-55mm lens I've tested for Canon.

This Canon EF-M 18-55 IS STM is the best 18-55mm lens I've tested for Canon. This makes perfect sense because the EF-M format allows the lens designers the freedom to place the rear elements much closer to the sensor than the EF-S lenses which have to be designed around avoiding the flipping mirror of DSLRs  I'm sort of ashamed on Sony's part, but the Sony DT 18-55mm SAM and Sony NEX E 18-55mm OSS are poor by comparison. The Sony lenses are much softer and more distorted. Canon doesn't screw around when it comes to lenses; Canon is an optical company first and foremost, not a stereo equipment company like Sony.

The EF-M 18-55mm IS STM has much more than the usual amount of ghosts if you push your luck shooting into the sun and putting dark things in place to see the ghosts, and giving enough exposure. It is much worse than the 22mm f/2 STM.

Manual focus is awful; don't bother trying to use the manual focus ring. The ring is merely an input to a computer, which in turn controls the lens motor — if you have everything else set properly. It only works if the camera is both on and awake. There is little direct relationship between the motion of the ring and the motion of the lens, and there is some time delay.

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