Canon EOS-1D Dicas e técnicas - Página 16

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Personal Function 15 disables the AF-Assist beam of compatible EX-series Speedlites.

This can be helpful when working with other photographers, to prevent your AF-Assist

beam from appearing in their photos. The downside is that you lose the benefits of the

AF-Assist beam for your own photos.

Personal Function 16 allows the camera to fire automatically when autofocus is

achieved and the shutter button is fully depressed. This can be effective for handheld

macro photography or when the camera is set for remote operation and waiting for the

subject to come into the field of view. Remote operation can be achieved by using

Remote Switch RS-80N3 or Timer Remote Controller TC-80N3 with or without one or more

Extension Cord ET-1000N3 sets to release the shutter.

Personal Function 17 disables AFPS. This function can be convenient when you are

manually selecting focusing points near the edge of the Area AF ellipse but don't want

the camera to switch to Automatic Focus Point Selection mode.

Personal Function 18 enables AFPS when C.Fn 11-2 has been set. (AFPS is normally

disabled in C.Fn 11-2 as mentioned earlier.)

Combining

As you can see from reading the section on Custom Functions, there are a great many

Custom Functions:

C.Fns that relate to the navigation of the EOS-1 class 45-point Area AF sensor. Used

Advanced Operations

individually they can go a long way towards simplifying and easing the operation of the

camera. As an example, C.Fn 4-1 (or, 4-3), where the rear (*) button is used to activate

the focusing system, is almost universally accepted by professional photographers as

the best way to shoot sports. But by combining this function with C.Fn 18-2 and

registering a Home Position (HP) with the Assist Button, it can be a much more valuable

and versatile tool.

We will look at a few combinations and how they relate to different types of

photography. A combination that's useful for sports may be frustrating for shooting a

wedding or event, whereas a different combination might be ideal for those

applications. Some combinations lend themselves better to photographers who shoot

in AI Servo AF, but others make more sense for One-Shot AF. We will begin by covering

the Assist Button.

Assist Button

Out of the box, the Assist Button really doesn't do much and is often overlooked or not

recognized as the very functional tool that it is. The key feature of the Assist Button is

that you can register it to do something (with Personal Function 6, for example, you can

use it to toggle back and forth between a pre-registered shooting mode and metering

pattern that are different than the settings you are currently using). Here we will be

using it to pre-register either individual focusing points or AFPS. This pre-registered

focusing point (or AFPS) is called the Home Position (HP).

Assigning the Home Position (HP)

I. CAMERA FEATURES AND OPERATION