Sigma launches a new lens with a nicely wide aperture: a medium/short tele, Macro 70mm F2.8 EX DG. Certainly a good lens needed to draw some of the macro photo enthusiasts (1:1 ratio) and whose quality should be high enough to keep the flag of the EX line quite high (gold ring at the front of the lens). Notice that this lens includes a small â€˜Focus Limiter Switchâ€™ button to improve focusing speed in extreme conditions.
Beware: It should not be used with full-frame sensors, 35mm analog cameras, and other sensors of larger size than the common APS-C format (risk of significant vignetting).
Immediately available for Sigma AF, Canon EOS and Nikon AF. Sony and Pentax AF will come later.