Canon EF300mm f/2.8L IS II USM Manuel d'instructions - Page 15

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9. Infinity Compensation

Mark

Distance index

To compensate for shifting of the infinity focus

point that results from changes in temperature.

The infinity position at normal temperature is the

point at which the vertical line of the distance

scale L mark is aligned with the distance index.

For accurate focusing in MF on subjects at infinity

distance, look through the viewfinder while rotating

the focusing ring.

Infinity compensation mark

10. Hood

The special hoods that come with all these

lenses cut out unwanted light and protect the

front of the lens from rain, snow, and dust.

To attach the hood, loosen the hood lock knob

by turning it counterclockwise. Fit the hood onto

the lens's hood mount, and tighten the lock knob

to fix it in place. Use the same procedure, in

reverse, to remove the hood.

ENG-14