For some time now I have looked at the users of the Sigma and Tamron 150 - 600mm superzooms with curiosity and wondered how they compared to Canon options.
Being and owner and regular user of a Canon 400mm f/4.0 DO IS lens I wanted to test this against these superzooms and a Canon 100 - 400mm option at 400mm and see what the other lenses looked like at 600mm.
London Camera Exchange in Guildford obliged and I was able to take images with both the Contemporary and Sports versions of the Sigma 150 - 600 mm lenses and with a Canon 100 - 400 mm with a 1.4 teleconverter attached to compare with my Canon 400 mm DO.
The results were very interesting with the Sigma contemporary appearing to be marginally sharper and having more contrast then all the other lenses.
If anyone would like to see the test images then please feel free to get in touch.
Eddie Hyde
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