What's the difference between Canon lens 15-85 and 17-85?

Difference:

The most obvious difference between I, 15-85 and 17-85 lies in the image quality of edges and corners. The former is much sharper, especially at the wide-angle end, and the difference is more obvious. Undoubtedly, two aspherical lenses and one UD lens have made great contributions to the improvement of the image quality of 15-85 < P > Second, the focal lengths of the lenses are different. Canon lens 15-85 has a wide angle of 24 mm, which is rare in EF-S lens at present. Achieve effective 4-level anti-shake USM motor; Canon lens has a lens focal length of 17-85mm, which is installed on an APS-C SLR camera. After the focal length is converted, it takes into account the wide angle to the medium telephoto end.

third, the scope of use is different. 15-85 full-time manual focusing, very intimate and practical. 7-blade circular aperture, which can achieve beautiful blur and starlight effect. Good sharpness. The mirror body is short, which is helpful for carrying. 17-85 is suitable for hanging up the lens for tourism. IS optical anti-shake effect is obvious, which can provide anti-shake effect of nearly three gears, and adjust ISO according to light in time.

Extended information:

Features of Canon Lens 15-85. The standard zoom lens, which can cover 24-136mm focal length after the focal length is converted to 35mm, has a zoom ratio of about 5.7 times. 24mm wide-angle end (converted to 35mm focal length) can adapt to a wide range of fields from scenery to indoor shooting.

features of canon lens 17-85. About equivalent to 27-136mm viewing angle. Built-in image stabilizer, which is equivalent to improving the shutter speed of the third gear. Using glass mold double-sided aspheric lens and optimized lens coating, the imaging quality is excellent. Adopt circular aperture, which can focus manually all the time.

Reference: Canon EF-S 15-85mm _ Zhongguancun Online.