COLOUR Fringing

Fringing can be noticeable around high-contrast edges

with superzoom lenses, fringing (coloured lines around high-contrast edges, especially towards the corners of the frame) is typically worst at both ends of the zoom range, but less of an issue at mid-sector zoom settings. The amount of short-zoom colour fringing is very similar from all the lenses in the group, apart from the Tamron 16-300mm in which fringing is rather more evident. This lens is also worst for fringing at the long end, with the Tamron 18-270mm performing only slightly better. Automatic in-camera corrections are available in recent DSLRS, when using own-brand Canon lenses.