 This lens has been criticized by one review as prone to flare when used without a hood, and especially with low-quality photographic filters.The 17–55 suffers from vignetting at 2.8 of 0.5–1 EV throughout the focal range, though current Canon bodies are able to correct this by storing the vignetting data within the camera memory.Chromatic aberration is a relative weakness at the wide end (at the edges and corners), but is quite low for a zoom lens in this range.