– Included with the 200mm f/2 lens is the dedicated 1.4x teleconverter, which extends the effective focal length to 280mm, for an equivalent focal length of 427mm.
– Optical design has seven elements in four groups, including one aspherical element to reduce distortion and maintain high sharpness.
– Retains all AF, AE, and image stabilisation functions of the 200mm f/2 lens, as well as the same minimum focusing distance of 5.9′.
– Requires one additional stop of light, making the effective maximum aperture f/2.8.
– Teleconverter adds an additional 1.5cm to the overall length of the lens system along with an additional 130 grams of weight.




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