Canon EF11-24mm f/4L USM Podręcznik użytkownika - Strona 9

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4. I nfinityCompensation

Mark

To compensate for shifting of the infinity focus

point that results from changes in temperature,

there is a margin at the infinity (∞) position.

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 manual focusing of subjects at infinity,

look through the viewfinder or look at the magnified

image* on the LCD screen while rotating the

focusing ring.

* For cameras with Live View shooting capability.

Infinity compensation

mark

Distance index

5. Infrared Index

The infrared index corrects the focus setting

when using monochrome infrared film. Focus on

the subject manually, then adjust the distance

setting by moving the focusing ring to the

corresponding infrared index mark.

Some EOS cameras cannot use infrared film. See

the instructions for your EOS camera.

●

The infrared index position is based on a

wavelength of 800 nm.

●

The compensation amount differs depending on

the focal length. Use the indicated focal length

as a guide when setting the compensation

amount.

●

Be sure to observe the manufacturer's

instructions when using infrared film.

Use a red filter when you take the picture.

●

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