Sigma 180mm f/2.8 OS EX DG HSM APO Macro - Canon EF

Sigma's flagship macro telephoto lens for a full-size image sensor. Also suitable for the APS-C sensor. The lens' three SLD (Special Low Dispersion) lens elements, plus multiple lens diaphragms, improve image sharpness by eliminating excess light dispersion. Image sharpness and contrast are excellent even when shooting at full aperture. With Sigma's original OS -Optical Stabilizer. HSM -autofocus motor (ultrasonic motor) focuses quickly and quietly. Manual focus option. Built-in floating focus system that moves the two groups of lenses inside the lens, reducing diffraction and distortion, enabling extremely high optical image quality from infinity to 1:1 macro. Lens construction: 19 elements in 14 groups Angle of view: 13.7° Number of blades: 9 Minimum aperture: F22 Closest focusing distance: 47cm Max magnification ratio: 1:1 Filter thread: 86mm Size: 95mm×203,9mm Weight: 1 640g   The product comes with a 1+4 year warranty (requires registration). Sigma additional guarantee: register here