this is the number of millimeters a lens will make a sharp image at, usually from its back element. 50mm is usual on 35mm film cameras-i.e.as your eye sees a subject. Digital is different for each camera.
There are many ways one can order a Canon EF 75-300mm lens. One can order a Canon EF 75-300mm lens by making an account with the official Canon website, with Amazon, or with eBay.
Yes.
R10 reinforcement, at every 300mm
300mm is 9.72 x 10-18 parsecs.
450mm x 300mm 45cm x30cm 1350cm
Millimeter if you're American, millimetre if you're not.
The Canon EF 75 300 mm is a lens for the Canon SLR cameras. This lens is special as it offers a high degree of zoom, takes high scope and quality pictures, and covers up to 300 mm in lengths.
30cm
..about 300mm
About 300mm a year
11.8110236
32cm