• 1/2.35 inch 27.3mm2
  • 8.0 megapixels
  • 36.00mm - 180.00mm (35mm eq.)
  • 1/2.3 inch 28.1mm2
  • 16.2 megapixels
  • 26.00mm - 130.00mm (35mm eq.)
  • Detailed specifications
  • Pentax Optio V20
  • Sony Cyber-shot DSC-TX55
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: V20 DSC-TX55
Alternate Model Number(s):    
Camera Format: Ultra Compact Ultra Compact
Currently Manufactured: No No
Retail Price: $279.95 $350.00
Street Price: $203.33 $310.88
Date Available: 2008-05-15 2011-09-15
Tripod Mount: Yes Yes
Weight: 5.1 oz (145 g)
includes batteries 		3.8 oz (109 g)
includes batteries
Size: 3.8 x 2.2 x 0.9 in.
(97 x 56 x 23 mm) 		3.7 x 2.1 x 0.5 in.
(93 x 54 x 13 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer:   Sony Exmor R
Effective Megapixels: 8.0 16.2
Sensor Format: 1/2.35 inch 1/2.3 inch
Sensor size: 27.2556mm2 (6.03mm x 4.52mm) 28.0735mm2 (6.17mm x 4.55mm)
Approximate Pixel Pitch: 1.85 microns 1.34 microns
Focal Length Multiplier: n/a n/a
Aspect Ratio: 4:3 4:3
Color Filter Type: RGBG 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) 		4608 x 3456 (15.9 MP, 4:3),
4608 x 2592 (11.9 MP, 16:9),
3648 x 2736 (10.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
640 x 480 (0.3 MP, 4:3),
7152 x 1080 (7.7 MP, Other),
4912 x 1080 (5.3 MP, Other),
4912 x 1920 (9.4 MP, Other),
3424 x 1920 (6.6 MP, 16:9)
Image File Format: JPEG (EXIF 2.2) JPEG
Continuous-mode frames/second: 1.4 10.0
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30/​15)
320x240 (30/​15) 		1920x1080 (60i(FX/​FH))
1440x1080 (60i(HQ))
1440x1080 (30)
1280x720 (30)
640x480 (30)
Movie File Format: AVI (Motion JPEG) AVCHD/MPEG-4
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes
Video Usable as Viewfinder:
HD Video Out: Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a n/a
Lens: SMC Pentax Zoom; 8 elements, 6 groups (4 aspherical elements) Carl Zeiss Vario-Tessar
Focal Length (35mm equivalent): 36 - 180mm 26 - 130mm
Focal Length (actual): 6.3 - 31.5mm 4.7 - 23.5mm
Zoom Ratio: 5.00x 5.00x
Aperture Range: f/3.5 (wide) - f/5.6 (tele) - ??? f/3.5 (wide) / f/4.8 (tele) - ?
Integrated ND Filter: No No
Normal Focus Range: 40 cm to Infinity
15.7 in to Infinity 		3 cm to Infinity
1.2 in to Infinity
Macro Focus Range: 10 - 50 cm
3.9 - 19.7 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: Up to 5.1x; up to 25.5x total Intelligent Zoom at VGA
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 9 point Contrast Detect AF; spot/auto-tracking available Contrast Detection
Auto Focus Assist Light? No Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: LCD LCD
Viewfinder Type:    
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):    
Viewfinder Magnification (nominal/claimed):    
Display
Eye-level Viewfinder: No No
Rear Display: Yes Yes
Rear Display Size (inches): 3.0 3.3
Rear Display Resolution: 230,000 dots 1,229,800 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 8.0x  
Top Deck Display:
Exposure
Maximum ISO (native):    
Minimum ISO (native):    
ISO Settings: Auto, 80, 100, 200, 400, 800, 1600, 3200, 6400 (6400 in Digital SR mode only) Auto, 100, 200, 400, 800, 1600, 3200
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Tungsten, Fluorescent, Manual Auto, Daylight, Cloudy, Fluorescent 1/2/3, Incandescent, Flash, One Push
Shutter Speed Range: 1/2000 - 4 sec 1/1600 - 30 sec
Bulb Mode: No No
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: TTL metering: Multi-segment, Center-weighted, Spot Multi-pattern, center-weighted, spot
Program Auto Exposure: Yes Yes
Aperture Priority: No No
Shutter Priority: No No
Full Manual Exposure: No Yes
Creative Exposure Modes: , Night Scene, Landscape, Portrait, Sport, Flower, Night Scene, Landscape, Flower, Natural Skin Tone, Portrait, Surf & Snow, Sport, Digital SR (5M), Kids, Pet, Food, Panorama, Digital Wide Angle (5M) High Sensitivity / Night Scene / Hand-held Twilight / Night Portrait / Landscape / Soft Snap / Soft Skin / Anti Motion Blur / Backlight Correction HDR / Beach / Snow / Fireworks / Hispeed Shutter
Self Timer: 2 or 10 seconds 2, 10, Portrait1, Portrait2 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, flash on, flash off, redeye Auto, Flash On, Slow Syncro, Flash Off; Red-eye Reduction: On/Off/Auto
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: 14’ (wide, auto ISO), 9.2’ (tele, auto ISO) ISO Auto: Approx.0.08 - Approx.3.7m (W); Approx.0.6 - Approx.2.6 m (T)
Max Flash Sync:    
Flash Exposure Compensation:    
External Flash Connection: n/a n/a
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: SD / SDHC MS Micro M2 / microSD / microSDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No No
Uncompressed Format:    
Movie File Format: AVI (Motion JPEG) AVCHD/MPEG-4
Included Memory: 51.1 MB 0.0 MB
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 No
DPOF Compliant: Yes Yes
Remote Control: No
Remote Control Type:    
Connections (extended):   HDMI output
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):    
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?
JPEG shooting speed in burst mode (fps, max resolution): 1.4 10.0
Buffer size for JPEG shooting in burst mode (frames, max resolution):   10
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):    
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):    
Shutter lag (full AF, with flash):    
Shutter Lag (prefocused):    
Shutter Lag (notes):    
Startup Time:    
Play -> Record Time:    
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 200 shots 250 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary D-LI78 Proprietary
Usable Battery Types: Lithium Ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary D-LI78 Lithium Ion rechargeable 1 x Proprietary Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Software (S-SW77) CD-ROM  
OS Compatibility: Windows, Mac OS  
Miscellaneous
Notes & Features: Face Recognition AF&AE , Smile Capture, Blink Detection For Portraits. Optical Image Stabilization, 3.3" OLED Touchscreen, Full HD video, 3D and Picture Effect modes, Superior Auto, up to 10x Clear Image Zoom, Hi-speed AF. Available in black, silver, purple, and red.