• 1/2.3 inch 28.1mm2
  • 16.2 megapixels
  • 26.00mm - 130.00mm (35mm eq.)
  • 1/2.33 inch 28.2mm2
  • 16.0 megapixels
  • 25.00mm - 450.00mm (35mm eq.)
  • Detailed specifications
  • Sony Cyber-shot DSC-TX55
  • Pentax Optio RZ18
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Prices:   Compare Prices
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: DSC-TX55 RZ18
Alternate Model Number(s):    
Camera Format: Ultra Compact Compact
Currently Manufactured: No No
Retail Price: $350.00 $299.95
Street Price: $310.88 $209.99
Date Available: 2011-09-15 2011-10-31
Tripod Mount: Yes Yes
Weight: 3.8 oz (109 g)
includes batteries 		6.7 oz (190 g)
includes batteries
Size: 3.7 x 2.1 x 0.5 in.
(93 x 54 x 13 mm) 		4.3 x 2.4 x 1.4 in.
(109 x 61 x 36 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CMOS CCD
Sensor Manufacturer: Sony Exmor R  
Effective Megapixels: 16.2 16.0
Sensor Format: 1/2.3 inch 1/2.33 inch
Sensor size: 28.0735mm2 (6.17mm x 4.55mm) 28.198mm2 (6.13mm x 4.6mm)
Approximate Pixel Pitch: 1.34 microns 1.33 microns
Focal Length Multiplier: n/a n/a
Aspect Ratio: 4:3 4:3
Color Filter Type: RGBG  
Anti Aliasing Filter:    
Self-Cleaning: No No
Sensor shift image stabilization: No Yes
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: 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) 		4608 x 3456 (15.9 MP, 4:3),
3456 x 3456 (11.9 MP, 1:1),
4608 x 2592 (11.9 MP, 16:9),
3072 x 2304 (7.1 MP, 4:3),
1920 x 1080 (2.1 MP, 16:9),
640 x 480 (0.3 MP, 4:3)
Image File Format: JPEG JPG (EXIF 2.3)
Continuous-mode frames/second: 10.0 n/a
Video Capture
Can take movies: Yes Yes
Movie Resolution: 1920x1080 (60i(FX/​FH))
1440x1080 (60i(HQ))
1440x1080 (30)
1280x720 (30)
640x480 (30) 		1280x720 (30)
1280x720 (15)
640x480 (30)
640x480 (15)
320x240 (30)
320x240 (15)
Movie File Format: AVCHD/MPEG-4 AVI (Motion JPG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes
Video Usable as Viewfinder:
HD Video Out: Yes No
HD Video Connection: HDMI
Lens & Optics
Lens Mount: n/a n/a
Lens: Carl Zeiss Vario-Tessar smc PENTAX zoom lens, 12 elements, 11 groups, 4 aspheric elements
Focal Length (35mm equivalent): 26 - 130mm 25 - 450mm
Focal Length (actual): 4.7 - 23.5mm 4.5 - 81mm
Zoom Ratio: 5.00x 18.00x
Aperture Range: f/3.5 (wide) / f/4.8 (tele) - ? f/3.5 (wide) / f/5.9 (tele) - ???
Integrated ND Filter: No No
Normal Focus Range: 3 cm to Infinity
1.2 in to Infinity 		40 cm to Infinity
15.7 in to Infinity
Macro Focus Range:   4 - 50 cm
1.6 - 19.7 in
Filter Thread: n/a n/a
Thread Type: n/a n/a
Optical Image Stabilization: Yes No
Digital Zoom: Yes Yes
Digital Zoom Values: 7.2x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detection 9-point / spot TTL contrast detection w/ tracking
Auto Focus Assist Light? Yes No
Manual Focus: No Yes
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): 3.3 3.0
Rear Display Resolution: 1,229,800 dots 460,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom:   10.0x
Top Deck Display:
Exposure
Maximum ISO (native):    
Minimum ISO (native):    
ISO Settings: Auto, 100, 200, 400, 800, 1600, 3200 Auto (80 to 1,600), 80-1,600 (full res), 3,200 to 6,400 (5 megapixel or below)
Auto ISO Mode: Yes No
White Balance Settings: Auto, Daylight, Cloudy, Fluorescent 1/2/3, Incandescent, Flash, One Push Auto, Daylight, Shade, Tungsten, Fluorescent, Manual
Shutter Speed Range: 1/1600 - 30 sec 1/2000 - 4 sec
Bulb Mode: No No
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 2.0EV in 0.3EV steps
Metering Modes: Multi-pattern, center-weighted, spot Multi, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: No No
Shutter Priority: No No
Full Manual Exposure: Yes No
Creative Exposure Modes: 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 Portrait, Night Scene Portrait, Night Scene, Landscape, Blue Sky, Sunset, Flower, Sport, Pet, Digital SR (ISO 3200-6400 5M), Natural Skin Tone, Kids, Fireworks, Frame Composite (3M), Party, Food, Candlelight, Text, Surf & Snow, Digital Wide (5M), Digital Panorama (2M per frame)
Self Timer: 2, 10, Portrait1, Portrait2 seconds 10s, 2s, Remote 3s seconds
Time Lapse (intervalometer):   No
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, Flash On, Slow Syncro, Flash Off; Red-eye Reduction: On/Off/Auto Auto, Flash Off, Flash On, Auto + Redeye, On + Redeye
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: ISO Auto: Approx.0.08 - Approx.3.7m (W); Approx.0.6 - Approx.2.6 m (T) n/a
Max Flash Sync:    
Flash Exposure Compensation:    
External Flash Connection: n/a n/a
Built-In Wireless Flash Control:    
Image Storage
Usable Memory Types: MS Micro M2 / microSD / microSDHC SD / SDHC / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No No
Uncompressed Format:    
Movie File Format: AVCHD/MPEG-4 AVI (Motion JPG)
Included Memory: 0.0 MB 96.0 MB
Included Memory Type:   built-in memory
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: No No
DPOF Compliant: Yes Yes
Remote Control: No Yes
Remote Control Type:   Optional infrared
Connections (extended): HDMI output 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): 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 D-LI92
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary Lithium-ion rechargeable 1 x Proprietary D-LI92 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-SW121
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.