Depth-Of-Field Scale - Canon EF70-300mm f/4-5.6 IS II USM Instructions Manual

7. 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.
Infinity compensation mark

8. Depth-of-Field Scale

See "6. Lens Information Display" and switch
the display mode to "Focusing distance display
mode."
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