Lightweight and compact fixed focal length lens. AF speed - 1.8. Max. magnification (x) - 0.15. Diagonal angle of view: 46°. Lens construction (elements/groups): 6/5. No. of diaphragm blades: 5. Minimum aperture: 22. Closest focusing distance (m): 0.45. AF actuator: MM. Filter diameter (mm): 52. This is the lightest EF lens of all at a mere 130g. Very compact and providing a high performance for a standard lens. Gaussian optics provide sharp delineation from near to far focusing distances. The colour balance is excellent for a standard lens. Exterior design matches all EOS models. Size - Max.diameter x length (mm) - 68.2 x 41. Weight 130g.