EXCERPT page containing first few paragraphs. 2021-12-04 14:46:57
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Adding the 1.4X Extender II drops the maximum aperture to f/4, and increases the focal length to 280mm, for a 98-280mm f/4 zoom. I did not test shorter focal lengths, as in my view the loss of speed and quality at f/4 are simply not a good idea; the combination makes sense in order to extend the long end eg the 150-200mm range.
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