Join Richard Harrington for an in-depth discussion in this video Changing ISO, part of Learning the Canon Rebel T4i and T5i (EOS 650D and 700D).
IOS is a useful adjustment that modifies the sensitivity of your camera's sensor. As you increase ISO, you can use faster shutter speeds and smaller apertures. This is a typical adjustment you make when shooting in lower light. Keep in mind, though, that higher ISOs can add some noise, but the benefit is that they give you the option to use smaller apertures to catch deeper depth of field, and to use faster shutter speeds to truly freeze the action. To change ISO, press the ISO speed setting button.
Then, turn the command dial to choose a new ISO. Press the set button to apply the change, or just wait for the camera to auto apply the item. You can choose between settings that range from ISO 100 to ISO 12,800. With higher ISOs, you increase the likelihood of adding noise. Because these settings yield a lot of image noise and color distortion, you should use them as a last resort. Essentially, when it comes down to being very dark, and you don't wait to use the flash.
Is it the choice of getting the shot, or missing the shot? It's always a good idea for you to test out the IOS settings when you get a camera, and really review the images on your computer to truly see them. This will help you get familiar with the amount of noise, and decide which settings you're comfortable shooting with. To learn more about ISO, be sure to check out the Foundations of Photography Exposure Class here on Lynda.com, as well as the DSLR Video Tips Series.
Author
Released
10/27/2014Want to get up and running even faster? Check out the "Quick Start" chapter to learn how to use your T4i or T5i straight out of the box.
- Reviewing the lens controls
- Changing image format and size
- Adjusting ISO and exposure compensations
- Using Program Shift mode
- Exploring Autofocus
- Focusing manually
- Shooting in Continuous (burst) mode
- Switching between metering modes
- Shooting with flash
- Shooting video
Skill Level Beginner
Duration
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Introduction
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Welcome1m 37s
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1. Quick Start
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Powering up3m 59s
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2. A Closer Look at the Camera
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Touring the viewfinder2m 54s
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Autofocus basics2m 30s
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Lens controls1m 55s
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Image review and playback2m 59s
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3. Shooting in Program Auto Exposure Mode
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Changing ISO1m 28s
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Using Program Shift mode1m 13s
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4. Exploring Autofocus
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Focus modes2m 15s
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Focusing manually1m 34s
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5. Understanding Shutter-Release Modes
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Using the self-timer2m 35s
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Mirror Lockup mode1m 55s
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6. Understanding Exposure Controls
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Exposure lock51s
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Aperture-Priority mode1m 19s
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Shutter-Priority mode1m 26s
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Manual mode3m 10s
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Auto exposure bracketing2m 14s
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White balance2m 27s
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7. Beyond the Basics
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More playback options3m 20s
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Shooting with built-in flash2m 19s
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Using Picture Styles5m 4s
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Using Live View3m 20s
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Shooting video3m 50s
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Conclusion
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Goodbye49s
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Video: Changing ISO