All metal;Reversible center post;Easy Grip foam cushioned 1.25 inch diameter legs;Bubble levels;69.25 inch max height;25 inches folded;Holds up to 9 pounds!
Sigma 135-400/4.5-5.6 APO Zoom Lens f/Nikon AFD USA Description
Most frequently used focal lengths, from mid to long-range telephoto.
Handle unprecedented range of subjects from landscapes to fast action sports. 5-group zoom system to achieve sharp, high contrast results throughout entire zoom range.
3 SLD glass elements eliminate the secondary spectra effect normally associated with telephotos.
Rear focus system keeps front lens from rotating, giving you easier use of polarizing filters.
Convenient built-in rotary tripod mount eliminates vibration during shutter release.