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.
Capture and processing
ISO 400 was used to keep minimum shutter speed of 1/400. Remote release and Live View used to ensure sharpness. Multiple aperture series were shot and checked.
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