Canon EF70-200mm f/4L USM User Manual

Also see for IMAGE STABILIZER EF70-200MM F/4L IS USM: Instruction

Contents

ENG-65. Infinity Compensation MarkTo compensate for shifting of the infinity focuspoint that results from changes in temperature.The infinity position at normal temperature is thepoint at which the vertical line of the L mark isaligned with the distance indicator on thedistance scale.103015 ftm701005For accurate manual focusing on subjects atinfinity distance, look through the viewfinder whilerotating the focusing ring.Infinity compensation markDistance indexThe 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.• 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.6. Infrared Index103015 ftm701005Some EOS cameras cannot use infrared film. Seethe instructions for your EOS camera.