• APS-C 369.7mm2
  • 14.6 megapixels
  • ISO 100 - 3200
  • 1/2.3 inch 28.1mm2
  • 12.1 megapixels
  • 28.00mm - 110.00mm (35mm eq.)
  • Detailed specifications
  • Samsung GX-20
  • Pentax Optio P80
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: GX-20 P80
Alternate Model Number(s):    
Camera Format: Pro SLR Ultra Compact
Currently Manufactured: No No
Retail Price: $1399.95 $199.95
Street Price:    
Date Available: 2008-03-30 2009-09-15
Tripod Mount: Yes Yes
Weight: 25.2 oz (714 g) 4.2 oz (119 g)
includes batteries
Size: 5.6 x 4.0 x 2.8 in.
(142 x 102 x 70 mm) 		3.8 x 2.1 x 0.8 in.
(97 x 53 x 20 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CCD
Sensor Manufacturer:    
Effective Megapixels: 14.6 12.1
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 1.54 microns
Focal Length Multiplier: 1.5x n/a
Aspect Ratio: 3:2 4:3, 16:9
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) 		4000 x 3000 (12.0 MP, 4:3),
3072 x 2304 (7.1 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3)
Image File Format: JPEG (EXIF 2.21), RAW (.PEF, .DNG), 14-bit JPEG (EXIF 2.2)
Continuous-mode frames/second: n/a 0.9
Video Capture
Can take movies: No Yes
Movie Resolution: 1280x720 (30/​15)
640x480 (30/​15)
320x240 (30/​15)
Movie File Format:   AVI (Motion JPEG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder: No
HD Video Out: No No
HD Video Connection:
Lens & Optics
Lens Mount: Pentax K (KA/KAF/KAF2) n/a
Lens: n/a Pentax Zoom; 7 elements, 6 groups, 3 aspheric
Focal Length (35mm equivalent):   28 - 110mm
Focal Length (actual):   4.9 - 19.6mm
Zoom Ratio:   4.00x
Aperture Range:   f/2.6 (W) to f/5.8 (T)
Integrated ND Filter: No No
Normal Focus Range:   40 cm to Infinity
15.7 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 No
Digital Zoom: No Yes
Digital Zoom Values: n/a Up to approx. 6.3X
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: 11-point TTL phase-matching (SAFOX VIII) Contrast Detection; 9 point AF, Spot AF, Auto Tracking AF
Auto Focus Assist Light? Yes No
Manual Focus: Yes Yes
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 2.7
Rear Display Resolution: 230,000 dots 230,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 32.0x 10.0x
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 (64 - 800), Digital SR (64 - 6400), 64, 100, 200, 400, 800, 1600, 3200*, 6400*; *5MP
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (W, D, N), Flash, Color Temperature Auto, Daylight, Shade, Tungsten, Fluorescent, Manual
Shutter Speed Range: 1/4000 - 30 sec 1/1000 - 4 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 TTL Multi-segment, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: Yes No
Shutter Priority: Yes No
Full Manual Exposure: Yes No
Creative Exposure Modes: Sensitivity Priority, Shutter and Aperture Priority Auto Picture (Standard, Landscape, Portrait, Night Scene Portrait, Night Scene, Sport, Flower, Candlelight), Night Scene, Night Scene Portrait, Half-Length Portrait (3M), Landscape, Flower, Portrait, Surf & Snow, Sport, Kids, Pet, Food, Fireworks, Frame Composite, Party, Natural Skin Tone...
Self Timer: 2 or 12 seconds 2 or 10 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 Off, Flash On, Auto + Redeye, On + Redeye, Soft
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: Depends on lens : Approx 15’ (wide, auto ISO), 6.9’ (tele, auto ISO)
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 SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: Yes No
Uncompressed Format: RAW (.PEF, .DNG), 14-bit  
Movie File Format:   AVI (Motion JPEG)
Included Memory: No memory included 33.6 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: Yes
Remote Control Type: Wired or IR  
Connections (extended): DC input, wired remote DC-Input
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):   0.9
Buffer size for JPEG shooting in burst mode (frames, max resolution):   3
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
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary Proprietary D-LI88
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary Lithium-ion rechargeable 1 x Proprietary D-LI88 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 CD-ROM S-SW87
OS Compatibility:   Windows 2000/XP/Vista; MacOS-X 10.1.2-10.5
Miscellaneous
Notes & Features: PENTAX Shake Reduction (SR) technology features Pixel Track SR, Digital SR, and Movie SR to stabilize images and video. Smile Capture automatically captures pictures when your subject smiles, and Blink Detection alerts you if your subject's eyes are closed during the exposure. Available in Mint, Pearl and Black.