Nah, the Ixus V has a 2 times zoom but the Ixus 300 has a 3 times optical (up to 7.5 with digital option).

Jazz
(List 112, Mk2 12 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)
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Jazz (List 112, Mk2 42 gig #40. Mk1 4 gig #30. Mk3 1.6 16v)