ISO 12233 chart, flare, distortion and vignetting test results along with measurements & specifications have been added to the Canon EF-M 18-55mm f/3.5-5.6 IS STM Lens Review
Note that the Canon EOS M
shares the Canon EOS Rebel T4i/650D
imaging system. This includes the slightly sharper images output at our standard ISO 12233 test sharpness setting of "1" (with the Neutral Picture Style). The difference in sharpness is about the equivalence of a +1 sharpness setting.
As you have already guessed, I'm trying to decide if the EOS-M-tested lenses should be processed at Sharpness = 0 to be more equally represented with the rest of the lens tests - or if the standard setting should be adhered to.
All that said, I think that the Canon EF-M 18-55 is the lens that most people wanting a compact EOS M setup should be considering right now.