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Firmware: Canon EF 400mm f/4 DO IS II USM v1.0.9
Canon has released new firmware for the Canon EF 400mm f/4 DO IS II USM, which fixes an issue with the IS jumping. Firmware Version Read more...
Canon has released new firmware for the Canon EF 400mm f/4 DO IS II USM, which fixes an issue with the IS jumping. Firmware Version Read more...