• 1/2.5 inch 24.7mm2
  • 8.1 megapixels
  • 37.00mm - 112.00mm (35mm eq.)
  • 1/2.5 inch 24.7mm2
  • 8.0 megapixels
  • 35.00mm - 140.00mm (35mm eq.)
  • Detailed specifications
  • Pentax Optio E50
  • Canon PowerShot A590 IS
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: E50 A590 IS
Alternate Model Number(s):    
Camera Format: Ultra Compact Compact
Currently Manufactured: No No
Retail Price: $149.95 $179.99
Street Price:   $219.00
Date Available: 2008-03-30 2008-03-30
Tripod Mount: Yes Yes
Weight: 4.2 oz (119 g)
includes batteries
7.8 oz (221 g)
includes batteries
Size: 3.8 x 2.4 x 0.9 in.
(97 x 61 x 23 mm)
3.7 x 2.6 x 1.6 in.
(94 x 66 x 41 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CCD
Sensor Manufacturer:    
Effective Megapixels: 8.1 8.0
Sensor Format: 1/2.5 inch 1/2.5 inch
Sensor size: 24.7104mm2 (5.76mm x 4.29mm) 24.7104mm2 (5.76mm x 4.29mm)
Approximate Pixel Pitch: 1.76 microns 1.76 microns
Focal Length Multiplier: n/a n/a
Aspect Ratio: 4:3 4:3, 16:9
Color Filter Type: RGBG  
Anti Aliasing Filter:    
Self-Cleaning: No No
Sensor shift image stabilization: No No
On-Sensor Phase Detect: No No
DxO Sensor Score:    
DxO Color Depth Score (bits):    
DxO Dynamic Range Score (evs):    
DxO Maximum Effective ISO Score (iso):    
Image Capture
Image Resolution: 3264 x 2448 (8.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2304 x 1728 (4.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1600 x 1200 (1.9 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
3264 x 2448 (8.0 MP, 4:3),
3264 x 1832 (6.0 MP, 16:9),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1600 x 1200 (1.9 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
Image File Format: JPEG (EXIF 2.2) JPEG (EXIF 2.2)
Continuous-mode frames/second: n/a 1.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30/​15)
320x240 (30/​15)
640x480 (20)
320x240 (30)
160x120 (15)
Movie File Format: TBA AVI (Motion JPEG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder:
HD Video Out:
HD Video Connection:
Lens & Optics
Lens Mount: n/a n/a
Lens: Pentax zoom lens, 6 elements in 5 groups with 3 aspherical elements Canon Zoom Lens (7 elements in 5 groups, 2 aspherical)
Focal Length (35mm equivalent): 37 - 112mm 35 - 140mm
Focal Length (actual): 6.2 - 18.6mm 5.8 - 23.2mm
Zoom Ratio: 3.00x 4.00x
Aperture Range: f/2.8 (wide) / f/5.2 (tele) - ??? f/2.6 (wide) / f/5.5 (tele) - f/8.0
Integrated ND Filter: No No
Normal Focus Range: 40 cm to Infinity
15.7 in to Infinity
45 cm to Infinity
17.7 in to Infinity
Macro Focus Range: 15 cm to Infinity
5.9 in to Infinity
5 - 45 cm
2.0 - 17.7 in
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: Yes Yes
Digital Zoom Values: 4x up to 4x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 3-point TTL contrast detection 9- or 1-point Contrast Detect with Face Detect
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: LCD Optical / LCD
Viewfinder Type:   Real-image optical zoom
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):    
Viewfinder Magnification (nominal/claimed):    
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.4 2.5
Rear Display Resolution: 110,000 dots 115,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 8.0x 10.0x
Top Deck Display:
Exposure
Maximum ISO (native):    
Minimum ISO (native):    
ISO Settings: Auto (100 - 800), 1600 in Digital SR mode Auto, High ISO Auto, 80, 100, 200, 400, 800, 1600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto Auto, Daylight, Cloudy, Tungsten, Fluorescent, Fluorescent H, Custom
Shutter Speed Range: 1/2000 - 4 sec 1/2000 - 15 sec
Bulb Mode: No No
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: TTL multi-segment Evaluative, Center-weighted average, Spot Metering (frame is fixed to the center), Face Detect
Program Auto Exposure: Yes Yes
Aperture Priority: No Yes
Shutter Priority: No Yes
Full Manual Exposure: No Yes
Creative Exposure Modes: Night Scene, Landscape, Flower, Portrait, Surf & Snow, Sport, Digital SR, Kids, Pet, Panorama, Frame Composite Easy mode, Portrait, Landscape, Night Snapshot, Kids & Pets, Indoor, Night Scene, Sunset, Foliage, Snow, Beach, Fireworks, Aquarium
Self Timer: 2 or 10 seconds 1 to 30 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Flash On, Flash Off, Red-eye Reduction Auto, Flash On, Flash Off
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: Auto ISO: approx 20 ft (wide), 10 ft (tele) Auto ISO: 11 ft./3.5m (W), 7.2 ft./2.2m (T)
Max Flash Sync:   1/500
Flash Exposure Compensation:    
External Flash Connection: n/a n/a
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No No
Uncompressed Format:    
Movie File Format: TBA AVI (Motion JPEG)
Included Memory: 9.5 MB No memory included
Included Memory Type: Internal  
Connectivity
Built-In Wi-Fi: No No
NFC: No No
Bluetooth: No No
Built-In GPS: No No
Microphone Jack: No No
Headphone Jack: No No
External Connections: USB 2.0 High Speed USB 2.0 High Speed
PictBridge Compliant: Yes Yes
DPOF Compliant: Yes Yes
Remote Control: No No
Remote Control Type:    
Connections (extended): Dock terminal connection (Kodak ImageLink) DC Input
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.98
Cycle time for RAW shooting in single shot mode (seconds per frame):    
Buffer size for RAW shooting in single shot mode (frames):    
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution):   1.0
Buffer size for JPEG shooting in burst mode (frames, max resolution):   Unlimited
RAW shooting speed in burst mode (fps):    
Buffer size for RAW shooting in burst mode (frames):    
RAW+JPEG shooting speed in burst mode (fps):    
Buffer Size for RAW+JPEG shooting in burst mode (frames):    
Shutter lag (full AF, wide/mid):   0.51 seconds
Shutter lag (full AF, tele):   0.70 seconds
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.260 seconds
Shutter lag (full AF, with flash):   0.92 seconds
Shutter Lag (prefocused):   0.068 seconds
Shutter Lag (notes):    
Startup Time:   1.9 seconds
Play -> Record Time:   1.3 seconds
Flash cycle time, full power:   10.5 seconds
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 250 shots (Alkaline AA) 450 shots (NiMH AA)
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: 2 x AA 2 x AA
Usable Battery Types: Alkaline or Lithium disposable, NiMH rechargeable Alkaline disposable, NiMH rechargeable
Batteries Included: TBA 2 x AA Alkaline disposables
Battery Charger Included (dedicated charger or AC/USB adapter): No No
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: TBA ZoomBrowser EX / ImageBrowser, PhotoStitch, Drivers
OS Compatibility: TBA Windows, Mac OS
Miscellaneous
Notes & Features: Optical Image Stabilization (OIS); Motion Detection technology consolidates motion information for both the camera and the photographic subject and determines whether the subject has moved and what if any adjustments to focus or exposure needs to be made; Hi-ISO Auto function that works together with Motion Detection Technology to reduces the effect of blur in low light shooting situations by automatically changing and balancing the ISO sensitivity along with the shutter speed.