Take the IS II version. Then you will be pleasantly surprised by comparing it with other lenses. Personally, I myself try to use the settings of 35 mm aperture 5.6, I am satisfied with the quality. Specifically compared with the Nikon whale DX 18-55 G VR. The EF-S 18-55 IS II is sharper across the entire 18mm to 55mm range (more light and fine detail visible). 35-55 less distortion, less soap around the edges. But it limps a little more by 18 mm.
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