• APS-C 369.7mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • 1/2.3 inch 28.1mm2
  • 16.2 megapixels
  • 26.00mm - 130.00mm (35mm eq.)
  • Detailed specifications
  • Samsung GX-20
  • Sony Cyber-shot DSC-TX55
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: GX-20 DSC-TX55
Alternate Model Number(s):    
Camera Format: Pro SLR Ultra Compact
Currently Manufactured: No No
Retail Price: $1399.95 $350.00
Street Price:   $310.88
Date Available: 2008-03-30 2011-09-15
Tripod Mount: Yes Yes
Weight: 25.2 oz (714 g) 3.8 oz (109 g)
includes batteries
Size: 5.6 x 4.0 x 2.8 in.
(142 x 102 x 70 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: CMOS CMOS
Sensor Manufacturer:   Sony Exmor R
Effective Megapixels: 14.6 16.2
Sensor Format: APS-C 1/2.3 inch
Sensor size: 369.72mm2 (23.7mm x 15.6mm) 28.0735mm2 (6.17mm x 4.55mm)
Approximate Pixel Pitch: 5.07 microns 1.34 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2 4:3
Color Filter Type: RGBG RGBG
Anti Aliasing Filter: Fixed  
Self-Cleaning: Yes No
Sensor shift image stabilization: Yes No
On-Sensor Phase Detect: No No
DxO Sensor Score: 68  
DxO Color Depth Score (bits): 23.1  
DxO Dynamic Range Score (evs): 11.2  
DxO Maximum Effective ISO Score (iso): 714  
Image Capture
Image Resolution: 4672 x 3104 (14.5 MP, Other),
3872 x 2592 (10.0 MP, Other),
3008 x 2000 (6.0 MP, 3:2),
1824 x 1216 (2.2 MP, 3:2) 		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 2.21), RAW (.PEF, .DNG), 14-bit JPEG
Continuous-mode frames/second: n/a 10.0
Video Capture
Can take movies: No Yes
Movie Resolution: 1920x1080 (60i(FX/​FH))
1440x1080 (60i(HQ))
1440x1080 (30)
1280x720 (30)
640x480 (30)
Movie File Format:   AVCHD/MPEG-4
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes
Video Usable as Viewfinder: No
HD Video Out: No Yes
HD Video Connection: HDMI
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) n/a
Lens: n/a Carl Zeiss Vario-Tessar
Focal Length (35mm equivalent):   26 - 130mm
Focal Length (actual):   4.7 - 23.5mm
Zoom Ratio:   5.00x
Aperture Range:   f/3.5 (wide) / f/4.8 (tele) - ?
Integrated ND Filter: No No
Normal Focus Range:   3 cm to Infinity
1.2 in to Infinity
Macro Focus Range:    
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: No Yes
Digital Zoom: No Yes
Digital Zoom Values: n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point TTL phase-matching (SAFOX VIII) Contrast Detection
Auto Focus Assist Light? Yes Yes
Manual Focus: Yes No
Viewfinder
Viewfinder: Optical / LCD LCD
Viewfinder Type: SLR type; eye-level pentaprism  
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):    
Viewfinder Magnification (nominal/claimed):    
Display
Eye-level Viewfinder: Yes No
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 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: 32.0x  
Top Deck Display: Yes
Exposure
Maximum ISO (native): 3200  
Minimum ISO (native): 100  
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200, 6400 (expanded) Auto, 100, 200, 400, 800, 1600, 3200
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Color Temperature Auto, Daylight, Cloudy, Fluorescent 1/2/3, Incandescent, Flash, One Push
Shutter Speed Range: 1/4000 - 30 sec 1/1600 - 30 sec
Bulb Mode: Yes No
Exposure Compensation: +/- 3.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: TTL open-aperture: 16-segment, Center-weighted, Spot Multi-pattern, center-weighted, spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes No
Shutter Priority: Yes No
Full Manual Exposure: Yes Yes
Creative Exposure Modes: Sensitivity Priority, Shutter and Aperture Priority 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 12 seconds 2, 10, Portrait1, Portrait2 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: On, Redeye, Slow Sync, Slow Sync + Redeye, Trailing Curtain Sync, Wireless 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: Depends on lens ISO Auto: Approx.0.08 - Approx.3.7m (W); Approx.0.6 - Approx.2.6 m (T)
Max Flash Sync: 1/180  
Flash Exposure Compensation:    
External Flash Connection: Hot Shoe, X-Sync Socket 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: Yes No
Uncompressed Format: RAW (.PEF, .DNG), 14-bit  
Movie File Format:   AVCHD/MPEG-4
Included Memory: No memory included 0.0 MB
Included Memory Type:    
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: Yes No
Remote Control Type: Wired or IR  
Connections (extended): DC input, wired remote 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):   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):   250 shots
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary Proprietary
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary 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:    
OS Compatibility:    
Miscellaneous
Notes & Features: 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.