The new SP AF180mm F/3.5 Di LD [IF] MACRO 1:1 is a
medium telephoto lens that gives the user a longer working distance needed
even in macro photography. In addition, to meet the needs of this dual-format
world (silver-halide and digital), the optical system of the lens is designed
to provide optimum performance when used with the latest digital SLR cameras
that are becoming more popular than ever.
This lens employs an IF (Internal Focusing) system that maintains the overall
length of the lens during focusing. Uses two LD (Low Dispersion) glass elements
that effectively compensate for chromatic aberration. Provides high-contrast,
outstanding image quality and a soft out-of-focus background effect. Incorporates
an AF/MF one touch switchover mechanism built into the focus ring(for Canon & Nikon
only). Super performance series provides high performance through outstanding
design specifications.
Features the new FEC (Filter Effect Control) function that enhances operational
ease of Polarising Filter use. The new Filter Effect Control is designed
to rotate the filter to the desired position while the hood is attached.
This is accomplished by turning the FEC ring that in turn rotates the portion
of the filter mount where the filter is mounted.