Canon EF 8-15 mm f/ 4 L USM Fisheye Lens 技术手册
ENG-11
Attaching a 250D or 500D (58mm) Close-up
Lens enables close-up photography.
The magnification will be as follows.
Close-up Lenses
(Sold separately)
8
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Close-up Lens 250D: 0.23x - 1.04x
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Close-up Lens 500D: 0.11x - 0.66x
MF mode is recommended for accurate focusing.