Canon EF 70-300mm f/4.5-5.6 IS USM Instructie - Pagina 12
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8. Infinity Compensation Mark
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 L mark is
aligned with the distance indicator on the
distance scale.
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.
9. 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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