Canon PowerShot A640

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FEATURES

4x Optical Zoom Lens

This camera is equipped with a 4x optical zoom lens with a focal length of 7.3–29.2 mm (35 mm film equivalent 35–140 mm), f/2.8–f/4.1, which is ideal for a wide range of photography including snapshots and scenic shots.

LCD Monitor

Wide Viewing Angle 2.5-inch type, low-temperature polycrystalline silicon TFT color LCD

Approx. 115,000 pixels, Picture coverage 100%
Vari-angle type

The LCD monitor can be used to check an image during shooting, to play back recorded images or to adjust menu settings.

Set the language for menus and messages on the LCD monitor from 25 languages by selecting [Language] in the “Set up Menu”.

AF Frame

AiAF
The camera automatically selects between 9 AF frames to focus on according to the shooting conditions.
Center
The camera focuses using the center AF frame. This is convenient for making sure the focus is exactly where you want it.
FlexiZone (Manual setting)
You can move the AF frame manually to the desired position. This is convenient for focusing accurately on your chosen subject to obtain the composition you desire.

Mechanical shutter + electronic shutter

Shutter speed is 15–1/2500 sec. This camera applies special processing to images shot at shutter speeds slower than 1.3 seconds to eliminate the noise. The fastest shutter speed for flash synchronization is 1/500 second.

Exposure Compensation

The settings can be adjusted in 1/3 stops in the range -2 to +2. Adjust the exposure compensation to a positive value to avoid making the subject too dark when it is backlit or shot against a bright background. Adjust the exposure compensation to a negative value to avoid making the subject too bright in night shots or when shot against a dark background.

Metering Methods

Evaluative
Appropriate for standard shooting conditions, including backlit scenes. The camera divides images into several zones for metering. It evaluates complex lighting conditions, such as the position of the subject, the brightness, the direct light, and the backlighting, and adjusts the settings to the correct exposure for the main subject.
Center Weighted Average
Averages the light metered from the entire frame, but gives greater weight to the subject matter at the center.
Spot
Meters the area within the spot AE point frame. The frame can be selected from Center and AF Point.

ISO Speed

Shoot with Auto, High ISO Auto, ISO 80, ISO 100, ISO 200, ISO 400, and ISO 800 equivalent. Raise the ISO speed to use a fast shutter speed when you wish to reduce the effects of camera shake or avoid blurry subjects, or to turn the flash off when shooting in a dark area.

White Balance

Normally, the Auto white balance setting selects an optimal white balance. When the Auto setting cannot produce natural looking colors, change the white balance using a setting appropriate for the light source.

White Balance Settings

Auto, Day Light, Cloudy, Tungsten, Fluorescent, Fluorescent H
Underwater
Appropriate for shooting images underwater with the Waterproof Case WP-DC8 (sold separately). This mode yields image data in the optimal white balance to record images with natural hues by reducing the bluish tone.
Custom
You can set a custom white balance to obtain the optimal setting for the shooting conditions by having the camera evaluate an object, such as a piece of white paper or cloth.

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PICTURES

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SPECIFICATION

PowerShot A640

Sensor • 1/1.8 " Type CCD
• 10.0 million effective pixels

Image sizes • 3648 x 2736
• 2816 x 2112
• 2272 x 1704
• 1600 x 1200
• 640 x 480
• 3648 x 2048

Movie clips • 640 x 480 @ 15/30fps
• 320 x 240 @ 15/30fps
• 160 x 120 @ 15fps

File formats • JPEG (Exif v2.2)
• DPOF
• AVI Motion JPEG

Lens • 35-140mm (35mm equiv)
• 4x optical zoom
• F2.8-4.1

Image stabilization No

Conversion lenses Yes

Digital zoom up to 4x

Focus TTL

AF area modes • 9-point AiAF
• 1-point AF

AF assist lamp Yes

Focus distance Closest focus distance 1cm

Metering • Evaluative
• Center-weighted average
• Spot (center or linked to focusing frame)

ISO sensitivity • Auto
• ISO 80
• ISO 100
• ISO 200
• ISO 400
• ISO 800

Exposure compensation +/- 2EV in 1/3 stop increments

Shuttter speed 15-1/2500 sec

Aperture F2.8-4.1

Modes • Auto
• Program AE
• Shutter Priority AE
• Aperture Priority AE
• Manual
• Custom
• Portrait
• Landscape
• Night Scene
• Stitch Assist
• Movie
• Special Scene
• Single
• Continuous

Scene modes • Night Snapshot
• Kids & Pets
• Indoor
• Foliage
• Snow
• Beach
• Fireworks
• Underwater
• Color Accent
• Color Swap

White balance • Auto
• Daylight
• Cloudy
• Tungsten
• Fluorescent
• Fluorescent H
• Underwater
• Custom

Self timer 2 or 10sec, custom

Continuous shooting Approx 1.5fps

Image parameters My Colors (My Colors Off, Vivid, Neutral, Sepia, B&W, Lighter Skin Tone, Darker Skin Tone, Positive Film, Custom Color)

Flash • Auto, Flash On, Flash Off, SLow Sync, Red-eye reduction
• Flash compensation: +/- 2EV in 1/3 stop increments
• Second curtain
• Range: 45cm - 4.2m (wide) / 3m (tele)

Viewfinder Real-image zoom, optical viewfinder

LCD monitor • 2.5-inch Vari-angle P-Si TFT
• 115,000 pixels

Connectivity • USB 2.0 Hi-Speed
• AV out

Print compliance PictBridge

Storage • SD, SDHC, MMC compatible
• 32 MB card supplied

Power • 4x AA Alkaline or NiMH batteries
• Optional AC adapter

Weight (no batt) 245 g

Dimensions 109.4 x 66 x 49.1 mm