ENG-84. InfinityCompensationMarkFor accurate manual focusing of subjects at infinity,look through the viewfinder or look at the magnifiedimage* on the LCD screen while rotating thefocusing ring.To compensate for shifting of the infinity focuspoint that results from changes in temperature,there is a margin at the infinity (∞) position.The infinity position at normal temperature is thepoint at which the vertical line of the distancescale L mark is aligned with the distance index.Distance indexInfinity compensationmark* For cameras with Live View shooting capability.5. Infrared Index● The infrared index position is based on awavelength of 800 nm.● The compensation amount differs depending onthe focal length. Use the indicated focal lengthas a guide when setting the compensationamount.● Be sure to observe the manufacturer’sinstructions when using infrared film.● Use a red filter when you take the picture.Some EOS cameras cannot use infrared film. Seethe instructions for your EOS camera.The infrared index corrects the focus settingwhen using monochrome infrared film. Focus onthe subject manually, then adjust the distancesetting by moving the focusing ring to thecorresponding infrared index mark.COPY