The Canon EF 300 mm f/2.8 L IS II USM, although it has the II Roman numeral in its name, is, in fact, the third generation of the EF 300 mm f/2.8 USM lens which was launched in 1987. In July 1999 a new version was shown, equipped with optical image stabilization. After more than a decade of its presence on the market it was substituted by the EF 300 mm f/2.8 L IS II USM model. Although in the meantime stabilization was added, the USM motor and the optical construction improved, every version of this lens was physically lighter than the previous one. Because of that the difference in weight between the first and the latest model amounts to almost half a kilo – quite a lot. This chart presents a summary of properties of all 300 mm lenses available in the Canon line-up and featuring the EF mount.
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