Canon PowerShot G2 Review
Top of camera controls
Top of the camera are a variety of controls, at the top right of this image is the shutter release button surrounded by newly shaped the zoom controller (not proportional, simply zoom in / zoom out). Below this is the drive control button (normal, continuous, self-timer, remote). Beside this is the main power / record / play dial which surrounds the exposure mode sub-dial, each exposure mode is described in more detail below:
Immediately switches to shooting mode, lens extends (if it is not already) zoom resets to the last used position and camera prepares to shoot (depending on exposure mode - below).
Switches the camera off, lens retracts. If there are any images still in the cameras buffer it will continue to write them out to the storage card before fully powering off.
Displays the last image shot (or the last image on the storage card). All controls revert to their play mode function. Remote control is automatically enabled.
Something new with the G2 - when you power the camera on it plays a little 'tadada' tune and displays 'PowerShot' on a blue clouds background on the LCD.
Zoom Controller (Record mode)
Zooms the camera's lens towards the telephoto setting, maximum optical zoom of 102 mm (35mm equiv.). A full zoom from wide to tele takes 2.8 seconds. If the camera is already at maximum optical zoom and digital zoom is enabled the camera will apply increasing levels of digital zoom.
|Zoom wide angle
Zooms the camera's lens towards the wide angle setting of 34 mm (35mm equiv.). A full zoom from tele to wide takes 2.8 seconds.
Zoom Controller (Play mode)
|Image magnify (zoom
Magnifies the displayed image, the first press goes to 3x, the second to 6x.
|Image magnify (zoom
If the displayed image is magnified pressing the zoom lever towards wide zooms out of the magnification.
Drive / Self-Timer Mode Button
Selects between different exposure drive modes:
Continuous (either normal or high speed - menu option)
Self-Timer (remote control enabled)
Camera has complete control over exposure, point-and-shoot operation, the majority of manual features are disabled, you can't alter exposure compensation, ISO or use RAW mode. You can set flash mode, macro and image size.
Program Auto Exposure
Shutter Priority Auto Exposure
Aperture Priority Auto Exposure
Full Manual Exposure
On major operation niggle was that certain settings (spot metering, macro focus mode) are lost at power-off.
* Aperture / Shutter speed rule
Just like the G1 the G2 is limited by the fact that it uses a single iris mechanism for both aperture and shutter. The iris opens at the beginning of the exposure to a certain size for the selected (or metered) aperture and then closes again at the end of the exposure. The speed at which the iris can go from a wide aperture (such as F2.0) to completely closed creates a limitation as to the maximum shutter speed available at different apertures.
The G2 is slightly different in that there's now a sliding scale of maximum shutter speeds versus aperture, on the G1 the aperture was simply locked at F8 for shutter speeds greater than 1/640 sec.
|Aperture Value||Maximum Shutter Speed|
|F2.0 - F3.2||1/500 sec|
|F3.5 - F4.5||1/640 sec|
|F5.0 - F7.1||1/800 sec|
Scene Exposure Modes
The exposure modes described below are designed to be easy to use camera presets. Macro focus, image adjustments (ISO, contrast, sharpening, saturation), AEB, AE Lock, FE Lock, metering and RAW mode can not be selected in these modes.
In this mode the focal length is locked to maximum wide angle (you cannot zoom). No auto focus is performed, instead the focus is locked (much like a fixed focus lens camera) which allows very fast (almost lag free) shots to be taken. Useful for situations when you need a fast reaction.
In this mode apertures are kept as large as possible (small F number) to produce a blurred background to help define the subject in a portrait shot. Note: Macro focus IS available in Portrait mode.
In this mode the flash is by default disabled (although you can enable it) and focus is locked at infinity. Apertures are kept as small as possible (large F numbers) to produce the largest possible depth of field. Macro focus is also disabled. Designed to be used for taking landscape shots.
Known on other cameras as "Slow Sync Flash". Put simply in this mode slow shutter speeds are used to capture a dimly lit background (buildings at night for example) and the flash fires briefly to illuminate a foreground subject.
Other Exposure Modes
This new exposure mode replaces the B&W setting on the G1. It allows you to select between four different colour settings. Each of these settings has a slightly different effect on colour output:
Vivid - colours are enhanced (saturation increased)
Neutral - colours are toned down (saturation decreased)
Sepia - image takes on a slightly brown cast B&W
B&W - image is shot in black and white
Designed to make shooting of panorama / stitch shots easier. You have a choice of five different stitch modes: left-right, right-left, down-up, up-down or 4-frames in a square. The display changes to show previously shot frames in the sequence to help alignment of each frame. Exposure and White Balance are locked to the first frame.
Record short movie clips:
320 x 240, 15 fps, max 30 secs (including audio)
160 x 120, 15 fps, max 120 ses (including audio)
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