Re: Canon EF-S 17-85mm f/4-5.6 IS USM vs. Canon EF-S 15-85mm f/3.5-5.6 IS USM Lens
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Digital.. Canon EOS 40D | Canon EF 24-70mm f/2.8L USM | Canon EF 35mm f/1.4L USM | Canon SpeedLite 580EX II
Film..... Canon EOS 650 | Canon EF 35-70mm f/3.5-4.5 | Canon SpeedLite 430EX II