A higher ISO speed makes it easier to capture shots of a dimly-lit scene. The ISO speed setting varies constantly when the Auto setting is selected. Learn more about aperture in: Camera Basics #1: Aperture The selectable aperture value range varies according to the lens in use. A smaller value means the aperture is more widely open, which allows more light to be captured. This value indicates the extent to which the aperture blades inside the lens are open.

In this case, 1'3 means 1.3 seconds.įind out more about shutter speed in: Camera Basics #2: Shutter Speed Compare that with the ISO range of the entry-level Canon EOS Rebel T3i, which extends from 100-6400, and you can easily identify which camera has the better ability to get shots in low-light situations like the one seen below. Shutter speeds slower than 1/4 second are indicated as, for example, 0''3, 0''4, 0''5, 0''6, 0''8, 1'', or 1''3. Mid-range cameras like the FujiFilm X100T shown above range from ISO 100-51200, giving it good low-light performance. Increasing the parameter value shortens the time interval the shutter remains open. However, only the parameter value is shown in the viewfinder. The shutter speed value is denoted in the '1/parameter' format. Indicates the time interval during which the shutter is open. Lets begin this discussion by defining what ISO means. But what ARE these things - ISO and image noise - and how do they play a role in the photos that you take with your camera Lets find out The Definition of ISO. You can choose to select an AF point automatically or manually. The larger the digital sensor, the less noise it creates even when the camera is set to extremely high ISO settings. The selected AF point will be highlighted in red. Indicates the position of the focus during AF (autofocus) shooting. Here are some tutorials on how to use your built-in flash to achieve interesting effects:įlash Techniques #1: How to Deal with Harsh Shadows Caused by Backlightįlash Techniques #6: How to Create Magical Bokeh Circles on a Rainy Day

The flash may be automatically fired in some modes.

When needed, you can fire the flash to capture a shot in a dimly-lit scene.

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