Canon EOS-1 Manuale di servizio

AI Servo AF Custom Function

ISO Speed Settings Guide

AI Servo AF Custom Function &

ISO Speed Settings Guide

AI Servo AF Custom

Functions

ISO Speed Settings

Custom functions for personalized

AI Servo AF settings to capture

moving subjects more effectively

A wide range of normal ISO speeds

(ISO 100 – 12800) and ISO

expansion options (ISO 50, 25600,

51200, 102400) are available

The EOS-1D Mark IV offers photographers a variety of

options to customize AF and Continuous shooting

operation. These can be found in the third Custom

Function group (C.Fn III). Among the Custom Function

options are those that can be set for a variety of subjects

when using AI Servo AF which is the best AF mode for

moving subjects. As introduced on page 4, the Custom

Function settings provide a greater level of versatility for a

wide variety of shooting situations. Depending on the

shooting conditions, it is possible for the AI SERVO AF

mode to focus more accurately on fast moving subjects by

selecting an appropriate Custom Function. This guide

describes the features of these key Custom Functions, and

how to select and use the most appropriate settings.

A major feature of the EOS-1D Mark IV is its outstanding

image quality at high ISO speeds. Image quality

improvements brought about as a result of the newly

developed 16 megapixel CMOS sensor and Dual "DIGIC

4" image processing make it possible to use a maximum

standard ISO speed of 12800, with an ISO expansion of

up to ISO 102400. Until now, images at ISO speeds of

3200 and 6400 were of such a quality that usage was

generally due to the need for an image rather than a

desire to have the best possible image quality. With the

EOS-1D Mark IV, image quality has improved so much that

the normal ISO range up to 12800 is now suitable for a

much greater range of photographic situations. The

second half of this guide introduces the superior image

quality of the EOS-1D Mark IV including use of high ISO

speeds, and offers tips for getting the best results at all

ISO speed settings.

Contents

AI Servo AF

4Default Settings: Basic Settings with the Greatest Versatility

Notable New Custom Functions

06 [C.Fn III-11] ‘Switch to Registered AF Point’ Instantly Applies Preselected AF Points

08 [C.Fn III-16] ‘Orientation-Linked AF Point Selection’ Switches Focusing Points Automatically When

Changing Between Vertical and Horizontal Camera Positions

10 [C.Fn III-6] Pinpoint Focusing with ‘Spot AF’

Important Custom Functions for AI Servo AF

12 [C.Fn III-2] Tracking Sensitivity: Use ‘Intermediate Slow’ for Fast Moving Subjects

14 [C.Fn III-2] Tracking Sensitivity: Use ‘Slow’ For Subjects that Appear and Disappear Intermittently

16 [C.Fn III-8-2, C.Fn III-8-3] AF Expansion with Selected Point: Capture Subjects with Rapid Movement

by Selecting Surrounding AF Point Expansion

18 [C.Fn III-8-1] AF Expansion with Selected Point: Capture Subjects with Fast Side to Side Movement

by Selecting Left/Right AF Point Expansion

20 [C.Fn III-4-1] AI Servo AF Tracking Method: Shift Focus to Foreground Subject with Continuous AF

Tracking Priority

22 [C.Fn III-4-0]

AI Servo AF Tracking Method: Continuously Follow One Subject with Main Focus Point Priority

24 [C.Fn III-3] AI Servo 1st/2nd Image Priority: Determine the Relationship between AF Operation and

Shutter Release During Continuous Shooting

26 Mutual Association of Important C.Fn: How Camera Operation Will Change When Combining C.Fn

III-2, 4, 8

Special Hints for Sharp Photos

28 Collecting Predictive AF Data for 0.5 Seconds Before Shutter Release Raises the Probability of

Accurate Focusing

30 Using AF Point Expansion to Prevent Mistakes with Focus Shifting to the Background

32 Using AI Servo AF Tracking Method to Prevent Focus Shifting to Obstructions in the Foreground

34 Deal with Slightly Out of Focus Photos from Minor Shaking with Even Faster Shutter Speeds

ISO Speed Settings

36 Normal ISO Speeds of ISO 100 – 12800 Achieve High Image Quality

38 ISO Expansion from ISO 25600 – 102400 Adds a New Dimension to Shooting

40 Image Quality at Each Setting with High ISO Speed Noise Reduction

42 Auto ISO Function is Useful for Shooting Conditions with Great Differences in Contrast

44 Confirming How to View Noise at High ISO Speeds with Print Size

46 Low ISO Speed Expansion ISO 50 can be Useful for Shooting Expression

47 Various Custom Functions that can be Applied to Shooting

The basic settings have great levels of versatility and can

handle a wide variety of shooting opportunities and subjects

AI Servo AF

Default settings

EOS-1D Mark IV Custom Functions related to AI Servo AF are

included in the C.Fn III AF/Drive group. This group's default Custom

Function settings are the basic settings for AI Servo AF.

Basic Settings are the most general settings, capable of handling the

majority of shooting conditions. The Custom Functions that will be

introduced later, when set for specific conditions can raise the

probability and precision of focusing. However, when the settings are

not appropriate, the probability and precision of focusing may actually

be reduced.

AI Servo AF on the EOS-1D Mark IV uses a new AF algorithm, and

the tracking performance of moving subjects has been significantly

improved. So, first try shooting with just the default settings and

none of the Custom Functions selected. Then after considering the

shooting conditions try setting the Custom Functions for even higher

consistency and precision of focusing.

Custom Functions related to AI Servo

AF are included in the C.Fn III AF/

Drive group.

The default out of the

box settings are the

simplest settings and are

more than capable of

handling shooting for a

variety of subjects.

Photo taken with the default settings, and not using any of the C.Fn

III AF/Drive Custom Functions. This setting will get the best possible

performance when shooting subjects that generally do not move.

Default settings are the easiest to use, however, when

you want to consistently capture subjects that move

extremely quickly, C.Fn III-8 AF expansion, and C.Fn III-4

AI Servo AF tracking method: Option 1 (Continuous AF

track priority) will be effective. Refer to the description

pages (pp. 16, 20).

EF400mm f/2.8L IS USM 1/2000 sec. f/2.8 ISO100

Setting hints

When even more stability is required than that provided by the Default Settings, using the

options within C.Fn III-8 (AF expansion),and C.Fn III-4(AI Servo AF tracking method) are also effective

AI Servo AF Custom Function C.Fn III-11

Switch to Registered AF Point

Notable function

With the C.Fn III-6 option, when lenses with an AF stop button are attached, selection of registered AF point with the AF stop button is possible.

You can instantly shoot with a different

registered AF point

Registered points can be applied with one button

The 45-point AF system on the EOS-1D Mark

IV makes it possible to capture the subject

within a wide area. However, when shooting

sports where the players move around quickly,

switching from a manually selected AF point

while shooting can be difficult. In situations like

this, Custom Function C.Fn III-11 Switch to

registered AF point is useful.

This function allows instant switching to a

previously registered AF point with just one

button. Registration of AF points can be carried

out during normal shooting conditions by

manually selecting the AF point, then while

pressing the AF point selection button, press the

ISO button to register. Then when C.Fn III-11 is

set to option 1 or 2 switching to the registered

AF point is possible.

Because it is possible to switch the AF point

with just one button, while shooting with a

manually selected AF point on the left edge, it

is also possible to instantly switch and shoot

with a registered AF point on the right side.

This function is convenient for registering an

AF point that is frequently used.

Press the

Multi-controller once,

While pressing the AE

lock button

In the manual AF point selection mode select the desired

AF point, by pressing the AF point selection button. Once

the required point has been chosen, then press the ISO

button, the AF point will then be registered and this is

confirmed by a beep.

Manually selected AF point Switch to registered AF point

For illustrative purpose, all AF points are displayed superimposed.

EF300mm f/2.8L IS

USM 1/1600 sec.

f/2.8 ISO3200

EF300mm f/2.8L IS

USM 1/1600 sec.

f/2.8 ISO3200

In order to capture the skater on the right hand side

while shooting with a manually selected AF point

on the left hand side, this photo was shot by

switching to a registered AF point on the right. This

feature is effective for shooting sports where there

is a lot of left-right, right-left movement.

It is possible to instantly

switch between two AF

points

Manually selected

AF point

Switch to registered

AF point

AI Servo AF Custom Function C.Fn III-16

Orientation linked AF point selection

Notable function

Three AF Points with differing orientations can be set

Automatically switch between set AF points for each different hold

With the EOS-1D Mark IV, it is possible to select

individual AF points according to the camera

orientation (horizontal position, vertical position

with grip on top, and vertical position with grip

on bottom) for the AF points. First, select C.Fn

III-16 Orientation linked AF point Option 1:

Select different AF points, then while holding

the camera in each different orientation, select

each AF point. Then, by switching back and

forth between horizontal and vertical positions,

the preset points will automatically switch

according to the orientation.

By using this it is possible to shoot in rapid

succession without button operation, additional

moving from the horizontal position with the

AF point on the right, to the vertical position

with the AF point at the top.

This function is effective for shooting subjects

where changes in framing are required.

Different AF points can be set to

three orientations. Changing the

orientation of the camera will

automatically switch to the preset

AF point

Set C.Fn III-16 Orientation

linked AF point to Option 1:

Select different points, and

then while holding the camera

in each orientation, carry out

the AF point registration.

Vertical position, with

grip on top

Horizontal position Vertical position, with

grip on bottom

Shoot with the set AF point in the vertical position

(center of the screen), then right away in the horizontal

position shoot when automatically switched to the AF

point at the top right of the screen. By using AF point

selection for each orientation, this kind of shooting is

possible.

EF300mm f/2.8L IS USM 1/1600 sec. f/2.8 ISO3200

For illustration, all AF points are shown at once.

Automatically switch AF points

between the vertical and

horizontal positions

Among the EOS-1D Mark IV AF functions, a

new function that stands out is Spot AF.

This function narrows the operation area of

each individual AF point. As focus can be

attained on a smaller area of the image, it can

be effective when used in situations like sports

when aiming at players through a net, or when

attempting to focus on the eyes of a race driver

wearing a helmet. (When using a normal line

sensor, the probability of focusing on a net in

the foreground or on the edge of the helmet is

higher, this will make it possible to focus on the

AI Servo AF Custom Function C.Fn III-6-7

Spot AF

Notable function

Pinpoint focusing is possible

Spot AF narrows the operating area of the AF sensor

Spot AF can be used by

selecting Custom Function

C.Fn III-6 Lens/Stop Button

Function for setting: 7 Spot

AF. (Illustration is the AF

sensor during AF. Actual

length not displayed.)

* This function can only be used when lenses with an AF stop button are attached.

EF200mm f/2L IS USM 1/1000 sec. f/2.8 ISO3200

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