12-16-2011, 09:32 AM
Has anyone got experience of both these lenses? Is the Tamron worth the extra money in terms of IQ and AF speed over the 55-250? I own a 60D and aleady have a tamron 17-50 VC and have been very impressed with this lens. I would like to add telephoto but in the scheme of things it will probably be my least used lens. Is the AF fast and accurate enough for a running 3 year old? Is BIF possible? I know I can get a used 55-250 for £139 which is very reasonable or I culd save for another year and get the Tamron? How does the Bokeh compare? I see from the les review the 55-250 has greater distortions. Any advice appreciated.