Tekpower Accu-Focus TP-AS1 Zoom Lens Focus Guide for Camera Cable Type:Canon 3-Pin Cameras Two aspherical elements are also

Two aspherical elements are also featured to limit spherical aberrations for improved sharpness

Optical Glass

Five straight diaphragm blades are used to render crisp 10-point sun-stars when photographing point light sources with smaller aperture sizes

the lens measures 1

The locks disengage to extend the legs along with the rapid center column from a folded length of 17

Tekpower Accu-Focus TP-AS1 Zoom Lens Focus Guide for Camera Cable Type:Canon 3-Pin Cameras Two aspherical elements are alsoHot shoe mounted dot sight with patented design for tracking and shooting distant, and fast moving objects such as wildlife, suitable for both digital mirrorless cameras and DSLRs, a handy accessory to use with long telephoto lenses. Powered by 2 AAA batteries (NOT included) Helps free your eyes from the cameras viewfinder to track the subject in motion and be aware of its surroundings, and keeps the subject laser focused and dead centered when a