Canon EF 70-300mm f/4-5.6 IS II USM User Manual - Page 19

7. Infinity Compensation Mark 8. Depth-of-Field Scale See "6. Lens Information Display" and switch the display mode to "Focusing distance display mode." Infinity compensation mark See "6. Lens Information Display" and switch the display mode to "Focusing distance display mode." Distance index 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. * When using the lens with cameras capable of Live View shooting, the infinity position can be checked by magnifying the image. The depth of field is the distance in front of and behind the plane of focus on the subject that appears sharp. The depth of field is indicated by the area between the depth-of-field scale lines below the distance scale. The numbers on the scale are F values. ●● The depth-of-field scale position changes due to zooming. For f/8, when the display space becomes narrow the display disappears and only the scale which shows f/8 is displayed. When moving closer to the telephoto end (300 mm), the scale which shows f/8 also disappears. ●● The depth-of-field scale is only to serve as a guide. ENG-18