Compared to any 24mm wide angles, the 25mm Zeiss lens has the great advantage to produce no "egg-heads" at the image corners, due to its special optical design! I am using the 25mm Distagon since decades very successfully for society and wedding photography, beside others. AF functions are absolutely not required! The superb 25mm Distagon is one of my most important wide angle glasses on my Contax RTSIII, AX, and 5DII.