Canon EOS-1D Dicas e técnicas - Página 21

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General Purpose Combo

This isn't really a combination, except that we included C.Fn 17-1 as an option so it's

a little more reliable when you're using a single focusing point in poor lighting.

But, it is a very useful combination of settings because it gives more versatility to the

photographer.

Shooting

AF Mode

Focus

Situation

Activation

Examples

button

General

AI Servo or

photography

One-Shot

Focus

Activation

with Shutter

release button

Background

Many photographers are more comfortable using the shutter release to initiate

autofocus, but some still want the ability to change focusing methods quickly.

This is very much like the Action Combo, but it's probably better suited to all-purpose

shooting; and it also lends itself to both One-Shot and AI Servo AF settings.

Operation

Decide how you will most often choose the focusing points (AFPS or Single Point AF).

Whichever method you will use less often, assign to the Assist Button as a HP. Then set

the more often used method using the AF Point Selection Button.

Photographers who use AFPS most of the time can set the HP to a single point (center

for those who might shoot some action, or off-center for those who shoot occasional

vertical portraits). Sports shooters could use a single point most of the time and register

AFPS as their HP for an alternative.

Shoot normally with your chosen focusing point selection method. While holding in the

Assist Button, you will have your pre-registered focusing point or AFPS. Let go and you're

back to your normal method.

Summary

Practice with these three combinations to get a feel for them. Trying these Custom

Function combinations will give you an idea of what some of the settings are capable of

I. CAMERA FEATURES AND OPERATION

C.Fn Set

Function

18-2

While being pressed, changes the focusing

points or pattern that the camera uses to the

HP setting. Release and the camera defaults

to the method chosen by the photographer.

17-1

This expands the AF activation area if

(optional)

needed in lowered contrast situations.