70 – 210 mm f/4 (model: A034) provides an excellent optical performance throughout the zoom range The application of three LD (Low Dispersion) lens elements means that this model A034 effectively correct chromatic aberrations Equipped with a fluorine coating and moisture resistant construction lightweight and compact, this telephoto zoom is ideal for travel Compatible with Tamron Duplicator and tap in console Compatible with full Framey APSC format.Tamron A034 lens for Canon was designed for use with Canon full-frame and APS-C format DSLR cameras with EOS mount.