Top of camera controls

On top of the camera all controls are located on the right side either beside or on top of the hand grip. Here you'll find the shutter release button, three function buttons and the drive mode selection button.

All described in more detail below:

Record Mode

Toggle LCD / EVF

With the LCD fully reversed and clipped into the rear of the camera you can press this button to switch between the LCD and the Electronic Viewfinder display.
Spot Metering

Enables / Disables spot metering. Only available in P, Tv, Av and M exposure modes. When spot metering is enabled the camera meters only from a small rectangle in the center of the frame, this rectangle is shown on the rear LCD (if enabled). Spot metering status is displayed on the top LCD and rear LCD (if enabled).
Drive Mode

Allows selection of drive mode: Single Shot, Continuous Shooting and Self-Timer / Infrared Remote control.

Play Mode

Toggle Thumbnail view

Toggles between display of full screen image or 3 x 3 thumbnails on the LCD screen.
Playback Zoom

Zoom the displayed image either 2.5 or 5.0 times, the 4-way controller can be used to scroll smoothly around the zoomed image.

Jump through playback images by 10 frames forward or backward.

Rear of camera controls

On the back of the Pro90 you'll find the flip-out LCD, beside this are a variety of other buttons. Each of the buttons is described in more detail below:

Record Mode

Auto Exposure Lock (AE-L)

Takes an exposure reading and locks it for the next shot. Only available in P, Tv and Av exposure modes. If you have the flash enabled the camera will fire the flash and take a meter reading against the flash output, lock it and use it for the next shot. Once the shot is taken metering is reset.
Multifunction Button

This button scrolls between four different camera settings:

Exposure compensation: +/-2 EV in 0.3 EV steps
White balance: Auto, Sunny, Cloudy, Incandescent, Fluorescent, Flash, Manual Preset
Bracketing: 3 frames: 0/+/- 0.3, 0.7, 1.0, 1.3, 1.7 or 2.0 EV
Flash output compensation: +/-2 EV in 0.3 EV steps

Use the left / right arrows to select different values.
DISPLAY LCD / EVF Display Mode

Toggles between two display modes: Image only display or Image and camera settings display.

Setting / Menu confirm

Used to confirm changed camera settings or options in the camera menus.

The Pro90 has the same "delete before saving" shortcut seen on other Powershot cameras, if you're looking at an image review, press SET then * to call up the delete yes/no dialog.

MENU Enter / Leave the Record Menu

Play Mode

DISPLAY Display Mode

Toggles between three LCD display modes: Image only display, Image and brief frame information, Image and detailed exposure information.
SET Setting / Menu confirm

Used to confirm changed camera settings or options in the camera menus.
MENU Enter / Leave the Play Menu