Focusing an Off-Center Subject | Canon EOS-3 guide

6. Focusing an Off-Center Subject

To focus a subject not covered by the area AF ellipse, follow the procedure below. This technique is called focus lock.

•Focus lock works only in the One-Shot AF mode. See page 35.

1Aim the focusing point on the subject and press the shutter button halfway to focus.

2 Keep pressing the shutter button halfway (this locks the focus) and recompose the picture as desired.

3 Press the shutter button completely to take the picture.

Evaluative metering is recommended for use with the One-Shot AF mode which locks the autoexposure setting (AE lock) at the same time focus is achieved. The exposure metering is linked to the focusing point.

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Image 49

Canon EOS-3 manual Focusing an Off-Center Subject

Contents

Instructions Page Thank you for purchasing a Canon product Precautions Quick Start With Page Camera Care and Storage Handling Precautions LCD Panel Handling PrecautionsBlinking on the LCD panel Low Battery Power About the Battery Nomenclature Nomenclature Side Door Buttons LCD Panel Exposure compensation Viewfinder InformationScale Conventions Used in this Instructions Booklet Attaching the Strap Before You Start Basic Operation Main SwitchShutter Button Basic Operation Halfway pressing Using the Electronic DialsComplete pressing Basic Operation Reverting to the Default Settings Custom Functions Settings retained Installing the Battery Installing the Battery and Checking the Battery Level 2CR5 Lithium Battery Life No. of Rolls Checking the Battery LevelInstalling the Battery and Checking the Battery Level Mounting and Detaching a Lens On the lens, set the focus mode switch to AFMounting a Lens Detaching the Lens Insert the film cartridge at an angle as shown in the figure Loading Film Loading Film Setting the Film Speed ISO film speed Basic Terminology Midroll Rewind Unloading Film Quick Start With Program AE Quick Start With Program AE Exposure Warnings Shifting the Program Dioptric Adjustment Lenses Autofocus AF AF Mode Selection AF Mode Selection AF Modes AF Mode SelectionOne-Shot AF for Still Subjects About Predictive AF AI Servo AF for Moving Subjects Area AF Ellipse and Focusing Points Focusing Point Selection Focusing Point SelectionAutomatic Selection Manual Selection Focusing Point Selection Using the dial to select a left or right focusing point Eye-Control Focusing Point Selection About Eye-Control AF Eye-Control Calibration Calibration Procedure Turn the dial to select a blinking channel No Hold the camera vertically and press the shutter button Eye-Control Calibration Refinement Set the switch to to end the calibration procedure Deleting Eye-Control Calibration Data Set the switch to Turn the dial to select a CAL No Eye-Control One-Shot AF ModeTake the picture Eye-Control AI Servo AF Mode Focusing an Off-Center Subject AF Sensitivity and the Lens’ Maximum Aperture When Autofocus Fails Manual Focusing Metering Modes Selecting a Metering Mode Evaluative Metering Metering ModesPartial Metering Spot Metering Focusing Point-Linked Spot Metering Centerweighted MeteringMetering Modes Multi-Spot Metering Multi-Spot Metering Display Metering Modes Page Shooting Modes With a fast shutter speed Shutter Speed-Priority AE Tv You Set the Shutter Speed Checkpicture. the aperture and take Shutter Speed-Priority AE Tv You Set the Shutter SpeedBasic Terminology Shutter speed Exposure Warnings With a large aperture Aperture-Priority AE Av You Set the Aperture Check the shutter speed and take the picture Aperture-Priority AE Av You Set the ApertureBasic Terminology Aperture Exposure Warnings Depth-of-field AE DEP You Set the Depth of Field Depth-of-field AE with a Manually-Selected Focusing Point Depth-of-field AE DEP You Set the Depth of Field Depth-of-field AE with a Camera-Selected Focusing Point Depth-of-field AE with Eye-Selected Focusing Points Depth-of-field AE DEP You Set the Depth of Field Exposure Warnings Manual Exposure M You Set the Shutter Speed and Aperture Using the Built-in Exposure Meter Manual Exposure M You Set the Shutter Speed and Aperture Exposure Compensation with the Dial Setting Exposure Compensation Exposure Compensation with the Button Setting Exposure Compensation Press Hold Down Button Button simultaneously Autoexposure Bracketing AEBTurn the dial to set the desired bracketing amount Autoexposure Bracketing AEB Canceling AEBFollow steps 1 and 2 to set the AEB to AE Lock AE Lock Press and hold down the button and button simultaneously Setting the Film Speed Manually Multiple Exposures Multiple Exposures BuLb Exposures Single-frame Shooting Switching the Film Advance ModeContinuous Shooting Press Hold down Button and button Simultaneously Switching the Film Advance Mode When , , , or BlinksContinuous Shooting Rates Self-timer Operation Attaching the Eyepiece Cover Self-timer Operation Press the shutter button complete- ly. The mirror locks up Mirror Lockup LCD Panel Illumination Depth-of-field Preview Flash Photography Flash Photography with Speedlite 550EX Wireless Multi-flash E-TTLHigh-Speed Sync FP Flash FE Flash Exposure Lock TTL Autoflash in Other Shooting Modes Full Auto FlashFlash Photography with Speedlite 550EX High-Speed Sync FP Flash Check that the Speedlite’s pilot lamp is lit FE Lock Composepicture. the shot and take Release the button and the normal display returns Flash Exposure Compensation Modeling Flash FEB Flash Exposure Bracketing Wireless multi-flash system Wireless Multi-Flash System 100 Using Other EOS-Dedicated Speedlites Sync Speed Using Non-Canon Flash UnitsPC Terminal + plus Minus 102 Basic Terminology Depth of Field 103 Custom Functions Setting a Custom Function Setting and Canceling Custom Functions104 Canceling All Custom Functions Canceling a Custom FunctionSetting and Canceling Custom Functions Altered Custom Function Indicator 106 Custom Function Settings 107 108 109 Custom Function Settings 110 111 112 113 114 115 116 117 118 119 120 121 122 Using Custom Functions CF-4 and CF-7 Together 123 Using Custom Functions CF-5 and CF-11 Together 124 Index of Custom Functions 125 Index of Custom FunctionsPage 127 Reference Section 128 Troubleshooting Guide 129 Troubleshooting Guide 130 Exposure Warning List Program Line Description Program Line131 Shutter speed readout Shutter Speed and Aperture Readouts 133 Interchanging the Focusing Screen Ec-series Interchangeable Focusing Screens Interchanging the Focusing Screen134 Major Accessories Battery Magazine BM-E2 Major Accessories Ni-MH Pack NP-E2Ni-MH Charger NC-E2 136 Speedlite Transmitter ST-E2 Major Accessories EX-series SpeedlitesOff-Camera Shoe Cord 137 Ed-Series Dioptric Adjustment Lenses Major Accessories Date Back DB-E2Timer Remote Controller TC-80N3 Remote Switch RS-80N3 Wireless Controller LC-4 Major Accessories Extension Cord ET-1000N3Remote Switch Adapter RA-N3 139 140 Major Specifications 141 Major Specifications Shutter 142 Film Transport 143 144 145 Custom Function Symbols 146