Comparisons / Comparison of Canon PowerShot SD770 IS and Pentax Optio A20

Comparison of Canon PowerShot SD770 IS and Pentax Optio A20 [S]ave

Attribute
Canon PowerShot SD770 IS ×
Pentax Optio A20 ×
General
ModelCanon PowerShot SD770 ISPentax Optio A20
BrandCanonPentax
Manufacturer urlhttps://www.usa.canon.com/https://us.ricoh-imaging.com/
Model numberSD770 ISA20
Camera formatUltra CompactCompact
Release year (year)20082006
Tripod mount+-
Length (mm)8689
Width (mm)2023
Height (mm)5455
Weight (g)151145
Waterproof--
Image Sensor
Sensor typeCCDCCD
Effective megapixels (MP)1010
Sensor format1/2.3 inch1/1.8 inch
Sensor area (mm²)28.0738.2
Sensor width (mm)6.177.18
Sensor height (mm)4.555.32
Approximate pixel pitch (micron)1.691.97
Aspect ratio4:3, 16:94:3
Color filter typeRGBGRGBG
Self-cleaning--
Sensor shift image stabilization--
On-sensor phase detect--
Image Capture
Image resolution
  • 1600 x 1200(1.9 mp 4:3)
  • 2272 x 1704(3.9 mp 4:3)
  • 2816 x 2112(5.9 mp 4:3)
  • 3648 x 2048(7.5 mp 16:9)
  • 3648 x 2736(10.0 mp 4:3)
  • 640 x 480(0.3 mp 4:3)
  • 1024 x 768(0.8 mp 4:3)
  • 1600 x 1200(1.9 mp 4:3)
  • 2048 x 1536(3.1 mp 4:3)
  • 2592 x 1944(5.0 mp 4:3)
  • 3072 x 2304(7.1 mp 4:3)
  • 640 x 480(0.3 mp 4:3)
Image file format
  • jpeg (exif 2.2)
  • jpeg (exif 2.2)
Continuous-mode (fps)1.4-
Video Capture
Can take movies++
Movie resolution
  • 160x120
  • 320x240
  • 640x480
  • 320x240
  • 640x480
Image Storage
Movie file formatAVI (Motion JPEG)AVI (MPEG-4 DivX)
Composite video out++
Ntsc/pal switchable video++
Lens and Optics
LensCanon Zoom Lens (6 elements in 5 groups, including 2 aspherical)smc Pentax
Focal length (35mm equivalent) (mm)35.00 - 105.0037.00 - 112.00
Focal length (actual) (mm)6.007.00
Zoom ratio (x)33
Aperture range (f)0.07 - 0.360.19 - 0.36
Integrated nd filter--
Min focus range (cm)3035
Macro focus range (cm)3 - 506 - 40
Optical image stabilization+-
Digital zoom++
Digital zoom values (x)
  • 4
  • 4
Auto Focus
Auto focus++
Auto focus type9-point Contrast Detect AF with Face Detection5 point contrast detection w/ spot, tracking, infinity landscape, and pan focus modes
Auto focus assist light+-
Manual focus-+
Viewfinder
ViewfinderOptical / LCDLCD
Viewfinder typeReal-image optical zoom; 16mm eyepoint-
Focus peaking--
Display
Eye-level viewfinder+-
Rear display++
Rear display size (inch)2.52.5
Rear display resolution (dots)230,000232,000
Touchscreen--
Articulating screen--
Tilt swivel screen--
Selfie screen--
Max playback zoom (x)108
Exposure
Iso settingsAuto, 80, 100, 200, 400, 800, 1600Auto, 64, 100, 200, 400, 800, 1600* (blur reduction mode)
Auto iso mode+-
White balance settings
  • auto
  • cloudy
  • custom
  • daylight
  • fluorescent
  • fluorescent h
  • tungsten
  • auto
  • daylight
  • fluorescent light
  • manual
  • shade
  • tungsten light
Shutter speed range (s)1/1500 - 151/2000 - 4
Bulb mode--
Exposure compensation+/- 2.0EV in 0.3EV steps+/- 2.0EV in 0.3EV steps
Explosure metering modesEvaluative, Center-weighted average, Spot, Face Detect AETTL metering: Multi-segment, Center-weighted, Spot
Program auto exposure++
Aperture priority--
Shutter priority-+
Full manual exposure--
Creative exposure modesPortrait, Night Snapshot, Kids & Pets, Indoor, Sunset, Foliage, Snow, Beach, Fireworks, Aquarium, Underwater, Color AccentAuto Scene, Night scene, Movie, Voice record, Landscape, Flower, Portrait, Kids, Blur reduction, Surf & Snow, Candle Light, Text
Self timer (s)
  • 1
  • 30
  • 2
  • 10
High resolution composite--
Flash
Built-in flash++
Flash modes
  • auto
  • auto red-eye correction
  • fe lock
  • flash off
  • flash on
  • red-eye reduction
  • slow synchro
  • auto
  • auto + red-eye reduction
  • auto backlight compensation
  • flash-off
  • flash-on
  • flash-on + red-eye reduction
Flash range descriptionAuto ISO 11 ft / 3.3 m (W), 6.6 ft./ 2.0 m (T)Wide: 0.20 - 23 ft (0.06 – 7.1 m); Tele: Approx. 1.15 – 11 ft (0.35 – 3.5 m)
Max flash sync (s)1/500-
Usable memory types
  • sd
  • sdh
  • sd
  • sdh
Dual card slots--
Raw capture support--
Included memory (MB)-24
Included memory type-built-in memory
Connectivity
Built-in wi-fi--
NFC--
Bluetooth--
Built-in gps--
Microphone jack--
Headphone jack--
External connections
  • usb 2.0 high speed
  • usb 1.1
Pictbridge compliant++
Dpof compliant++
Remote control-+
Connections (extended)
  • multipurpose usb/av connector
  • dc input
Performance Timing
Max cycle time for jpeg shooting (s/frame)1.98-
Camera penalizes early shutter press--
Jpeg shooting speed in burst mode (max resolution) (fps)1.4-
Shutter lag (full af, wide/mid) (s)0.75-
Shutter lag (full af, tele) (s)0.86-
Shutter lag (full af, with flash) (s)1.7-
Shutter lag (prefocused) (s)0.07-
Startup time (s)1.6-
Play -> record time (s)3-
Flash cycle time, full power (s)6-
Power
Battery life, stills (cipa rating monitor/live view) (shots)300-
Battery form factorProprietary NB-6LProprietary D-LI8
Usable battery types
  • lithium-ion rechargeable
  • lithium ion rechargeable
Batteries included1 x Proprietary NB-6L Lithium-ion rechargeable1 x Proprietary D-LI8 Lithium Ion rechargeable
Battery charger included (dedicated charger or ac/usb adapter)++
Software
Included software
  • canon software suite cd-rom
  • software (s-sw42)
Os compatibility
  • mac os
  • windows
  • mac os
  • windows
Miscellaneous
Notes and featuresOptical Image Stabilization, Motion Detection technology, Hi-ISO Auto and Noise Reduction technology, Face DetectionSoftware blur reduction mode locks resolution to 5 megapixels. Frame composition mode locks resolution to 3 megapixels.



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