Canon Digital Cameras - Canon PowerShot A640

 
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Canon PowerShot A640 Digital Camera Review

Canon PowerShot A640 has high-precision, high-speed DIGIC II image processing engine and incorporates a 10.0-megapixel CCD sensor. For improved visibility during playback and capture, the digital camera incorporate a vari-angle 2.5-inch LCD monitor and in their predecessors it enlarge from 2.0 inches. It also offer full manual operation and has the highest level of image quality.



IMAGE SENSOR  
Type 1/1.8" CCD 
Effective Pixels Approx.10.0M 
Colour Filter Type Primary Colour 
IMAGE PROCESSOR  
Type DIGIC II with iSAPS technology
LENS  
Focal Length 7.3 – 29.2 mm (35mm equivalent 35-140 mm)
Zoom Optical 4x. Digital approx. 4x (with Digital Tele-converter approx. 1.4x or 2.3x and Safety Zoom ¹) ². Combined approx. 16x
Maximum f/number f/2.8-f/4.1
Construction 8 elements in 7 groups (2 aspherical elements)
FOCUSING  
Type TTL
AF System / Points 9-point AiAF, 1-point AF (Any position is available or fixed centre)
AF Point Selection Manual selection using FlexiZone AF/AE
AF Lock On/Off Selectables
AF Assist Beam Yes
Manual Focus Yes
Closest Focusing Distance 1cm
EXPOSURE CONTROL  
WHITE BALANCE Type TTL
Metering Modes Evaluative, Centre-weighted average, Spot (centre or linked to focusing frame)
AE Lock Locked when shutter button is pressed half way
Exposure Compensation +/- 2 EV in 1/3 stop increments
ISO Speed Equivalent AUTO, High ISO Auto, 80, 100, 200, 400, 800
SHUTTER  
Speed 15 – 1/2,500 sec
(Available shutter speeds vary depending on the shooting mode)
WHITE BALANCE  
Type TTL
Settings Auto, Daylight, Cloudy, Tungsten, Fluorescent, Fluorescent H, Underwater, Custom
VIEWFINDER  
Viewfinder Real-image zoom, optical viewfinder
LCD MONITOR  
Monitor Vari-angle 2.5" P-Si TFT, approx. 115,000 pixels
Coverage 100%
FLASH  
Modes Auto, Manual Flash On / Off
Slow Sync Speed Yes
Red-eye Reduction Yes
Flash Exposure Compensation +/- 2 EV in 1/3 stop increments
Flash Exposure Lock Yes
Second Curtain Synchronisation Yes
Built-in Flash Range 45cm - 4.2m (W) / 3m (T) (at ISO AUTO equivalent)
External Flash Canon's High Power Flash HF-DC1
SHOOTING  
Modes Auto, Program AE, Shutter priority AE, Aperture priority AE, Manual, Custom, Portrait, Landscape, Night Scene, Stitch Assist, Movie, Special Scene (Night Snapshot, Kids & Pets, Indoor, Foliage, Snow, Beach, Fireworks, Underwater, Color Accent, Color Swap)
Photo Effects My Colors (My Colors Off, Vivid, Neutral, Sepia, Black & White, Lighter Skin Tone, Darker Skin Tone, Positive Film, Custom Color)
Drive Modes Single, Continuous, Self-Timer
Continuous Shooting Approx.1.5 fps ¹ (until memory card becomes full) ²
RECORDING PIXELS / COMPRESSION  
Image Size (L) 3648 x 2736, (M1) 2816 x 2112, (M2) 2272 x 1704, (M3) 1600 x 1200, (S) 640 x 480, (W) 3648 x 2048 (Postcard Date Imprint) 1600 x 1200
Compression Superfine, Fine, Normal
Movies (L)640 x 480, 30/15fps
(M)320 x 240, 30/15fps (S)160 x 120, 15fps
Movie Length Up to 1GB or 1 hour (L and M). Up to 3 min (S) ¹
FILE TYPES  
Still Image Type JPEG compression, (Exif 2.2 [Exif Print] compliant) / Design rule for Camera File system, Digital Print Order Format [DPOF] Version 1.1 compliant
Movies AVI [Motion JPEG compression + WAVE (monaural)]
Sound Files WAVE (monaural)
DIRECT PRINT  
Canon Printers Canon SELPHY Compact Photo Printers and PIXMA Printers supporting PictBridge (ID Photo Print, Fixed Size Print and Movie Print supported on SELPHY CP & ES printers only)
PictBridge Yes
OTHER FEATURES  
My Camera Start-up image and camera sounds customisation
Sound Memo Up to 60 sec per image
Intelligent Orientation Sensor Yes
Histogram Yes
Playback Zoom Approx. 2x - 10x
Self Timer Approx. 2 or 10 sec. or Custom
Menu Languages English, German, French, Dutch, Danish, Finnish, Italian, Norwegian, Swedish, Spanish, Simplified Chinese, Chinese (traditional), Japanese, Russian, Portuguese, Korean, Greek, Polish, Czech, Hungarian, Turkish, Thai, Arabic, Ukrainian, Romanian
INTERFACE  
Computer USB 2.0 Hi-Speed (Mini-B, PTP)
Other A/V output (PAL/NTSC)
MEMORY CARD  
Type Secure Digital (SD) Card or Secure Digital High-Capacity (SDHC) Card or MultiMediaCard (MMC),
16MB Memory card supplied
SUPPORTED OPERATING SYSTEM  
PC Windows 98SE / Me / 2000 SP4 / XP / XP SP1-2
Macintosh OS X v10.2 - 10.4
SOFTWARE  
Browsing & Printing ZoomBrowser EX / ImageBrowser
Other PhotoStitch, RemoteCapture
Drivers TWAIN (Windows 98 / 2000), WIA (Windows Me)
POWER SOURCE  
Batteries 4x Size-AA Alkaline or NiMH Batteries(NB4-200) (Alkalines supplied)
Battery Life Approx. 280 shots ¹ (with supplied batteries)
Approx. 500 shots (with optional Canon NB-2AH batteries) ¹
Approx. 20 hours. playback (with supplied batteries)
Approx. 20 hours. playback (with Canon NB-2AH batteries)
AC Power Supply Optional, AC Adapter CA-PS500
ACCESSORIES  
Case Soft Case DCC-300
Waterproof / Weatherproof Waterproof Case (40m) WP-DC8 , Waterproof Case Weight WW-DC1
Lenses Conversion Lens Adapter, LA-DC58F
Tele-Converter 1.75x TC-DC58N,
Wide converter 0.7x WC-DC58N
Flash High Power Flash HF-DC1
Power Supply & Battery Chargers Battery Charger Kit CBK4-300, Ni-MH Batteries NB4-300, AC Adapter Kit ACK600
PHYSICAL SPECIFICATIONS  
Operating Environment 0 - 40 °C, 10 - 90% humidity
Dimensions 109.4 x 66.0 x 49.1mm (excluding protrusions)
Weight (body only) Approx. 245g

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