Internal Focusing System

Internal lens elements move when focusing, so the overall length does not change -- creating a lens that focuses more quickly and doesn’t change balance.

Aspherical Lens Elements

Three aspherical elements correct visual aberrations more effectively across the entire zoom range and help reduce weight.

ED (Extra-low Dispersion) Glass

Two ED Glass lenses minimize flare and greatly reduce chromatic aberration, giving you sharp, clear shots even at full telephoto extension.

Circular Aperture

Because aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect.

Advisory when using DT lenses with full-frame (35mm equivalent) DSLR cameras.<>/c>

Sony α (alpha) lenses with the Digital Technology (DT) designation are ideal for use on APS-C size DSLR cameras and are not recommended for use with full frame DSLR camera bodies (such as the DSLR-A900). Although DT lenses can be used with full frame cameras, they can only realize a maximum of 11MP image size (when using the DSLR-A900), and are not guaranteed to provide accurate Auto Exposure performance.