EF 24-105mm f/4L IS USM
This is a standard zoom lens covering a wide range from 24mm wide-angle to 105mm medium-telephoto shooting. In addition to achieving a broad zoom range, the optical system made up of 18 elements in 13 groups contains only nvironmentally-friendly lead-free glass. The various types of aberration are well compensated using one super UD lens and three aspherical lenses (replica and molded glass), and this enables high quality images befitting L-series lenses .
EF-S 17-55mm f/2.8 IS USM
This large-aperture EF-S Series standard zoom lens features an optical system consisting of 19 lens elements in 12 groups. Three aspherical lens elements (one glass-molded and two replica surfaces) efficiently compensate for aberration fluctuations over the entire zoom range while enabling a large f/2.8 aperture and high image quality. Two UD lenses also reduce secondary chromatic aberrations to produce high-resolution, high-contrast images without colour bleeding around subject edges . The inner focus and a ring-type USM achieve silent, high-speed autofocusing, ........
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本來諗好左要A16, 但係尋日朋友仔借我玩陪NSD煮野食又好好玩wor....
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