• 1/2.33 inch 28.2mm2
  • 12.0 megapixels
  • 28.00mm - 140.00mm (35mm eq.)
  • 1/2.3 inch 28.1mm2
  • 14.0 megapixels
  • 28.00mm - 110.00mm (35mm eq.)
  • Detailed specifications
  • Nikon Coolpix S640
  • Pentax Optio RS1500
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:    
Successor:    
General
Model Number: S640 RS1500
Alternate Model Number(s):    
Camera Format: Ultra Compact Ultra Compact
Currently Manufactured: No No
Retail Price: $249.95 $149.95
Street Price:   $89.99
Date Available: 2009-09-15 2011-04-30
Tripod Mount: Yes Yes
Weight: 3.9 oz (110 g) 4.5 oz (128 g)
includes batteries
Size: 3.6 x 2.2 x 0.8 in.
(91 x 55 x 21 mm) 		3.6 x 2.2 x 0.9 in.
(91 x 56 x 23 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CCD
Sensor Manufacturer:    
Effective Megapixels: 12.0 14.0
Sensor Format: 1/2.33 inch 1/2.3 inch
Sensor size: 28.198mm2 (6.13mm x 4.6mm) 28.0735mm2 (6.17mm x 4.55mm)
Approximate Pixel Pitch: 1.53 microns 1.44 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: 4000 x 3000 (12.0 MP, 4:3),
3968 x 2232 (8.9 MP, 16:9),
3264 x 2448 (8.0 MP, 4:3),
2592 x 1944 (5.0 MP, 4:3),
2048 x 1536 (3.1 MP, 4:3),
1024 x 768 (0.8 MP, 4:3),
640 x 480 (0.3 MP, 4:3) 		4288 x 3216 (13.8 MP, 4:3),
4224 x 2376 (10.0 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 JPEG (EXIF 2.3)
Continuous-mode frames/second: n/a n/a
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30) 1280x720 (30)
1280x720 (15)
640x480 (30)
640x480 (15)
320x240 (30)
320x240 (15)
Movie File Format:   AVI (Motion JPEG)
Composite Video Out: Yes Yes
NTSC/PAL Switchable Video: Yes Yes
Video Usable as Viewfinder:
HD Video Out: No
HD Video Connection:
Lens & Optics
Lens Mount: n/a n/a
Lens: Nikkor lens Pentax Zoom; 6 elements in 5 groups, 3 aspheric
Focal Length (35mm equivalent): 28 - 140mm 28 - 110mm
Focal Length (actual): 5 - 25mm 4.9 - 19.6mm
Zoom Ratio: 5.00x 4.00x
Aperture Range: f/2.7 (wide) / f/6.6 (tele) - ??? f/3.2 (W) / f/5.9 (T) - ???
Integrated ND Filter: No No
Normal Focus Range: 45 cm to Infinity
17.7 in to Infinity 		40 cm to Infinity
15.7 in to Infinity
Macro Focus Range: 2 cm to Infinity
0.8 in to Infinity 		8 - 50 cm
3.1 - 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: Up to 4x Up to approx. 6.7x
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detection with Face-Priority AF Contrast Detection; 3-point AF, Spot AF, Auto tracking AF
Auto Focus Assist Light? No No
Manual Focus: No 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): 2.7 3.0
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:   10.0x
Top Deck Display:
Exposure
Maximum ISO (native):    
Minimum ISO (native):    
ISO Settings: Auto (100 - 1600) 100, 200, 400, 800, 1600, 3200, 6400 Auto: 100-800, Digital SR 100-6400 (ISO 3200-6400 at 5M) Manual: 100-6400 (ISO 3200-6400 at 5M)
Auto ISO Mode: Yes Yes
White Balance Settings:   Auto, Daylight, Shade, Tungsten, Fluorescent, Manual
Shutter Speed Range:   1/2000 - 4 sec
Bulb Mode: No No
Exposure Compensation:   +/- 2.0EV in 0.3EV steps
Metering Modes:   TTL Multi-segment
Program Auto Exposure: No Yes
Aperture Priority: No No
Shutter Priority: No No
Full Manual Exposure: No No
Creative Exposure Modes: 16 Scene Modes Portrait, Night Scene Portrait, Night Scene, Movie, Landscape, Blue Sky, Sunset, Flower, Sport, Pet, Digital SR (ISO 3200-6400 5M), Natural Skin Tone, Kids, Frame Composite, Food, Candlelight, Text, Surf & Snow, Digital Panorama (2M per frame), Half Length Portrait (3M)
Self Timer:   2 or 10 seconds
Time Lapse (intervalometer):   No
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: n/a Auto, Flash Off, Flash On, Auto + Redeye, On + Redeye
Flash Guide Number (ISO 100): n/a n/a
Flash Range Description: n/a Auto ISO: 16ft (wide), 8.5ft (tele)
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 SD / SDHC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No No
Uncompressed Format:    
Movie File Format:   AVI (Motion JPEG)
Included Memory: 45.0 MB 21.6 MB
Included Memory Type: built-in memory Internal
Connectivity
Built-In Wi-Fi: No No
NFC: 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: No Yes
Remote Control:
Remote Control Type:    
Connections (extended): DC Input Optional K-AC119 AC adapter kit
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):    
Buffer size for JPEG shooting in burst mode (frames, max resolution):    
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): 270 shots  
Battery Life, Still (CIPA Rating OVF/EVF):    
Battery Life, Video:    
Battery Form Factor: Proprietary EN-EL12 Proprietary D-LI108
Usable Battery Types: Lithium-ion rechargeable Lithium-ion rechargeable
Batteries Included: 1 x Proprietary EN-EL12 Lithium-ion rechargeable 1 x Proprietary D-LI108 lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): Yes Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: Nikon Software Suite CD-ROM Software CD-ROM S-SW116 with MediaImpression 3.0 for PENTAX (Windows) / MediaImpression 2.1 for PENTAX (Mac)
OS Compatibility:    
Miscellaneous
Notes & Features: Optical VR Image Stabilization, Motion Detection, Best Shot Selector (BSS), Smart Portrait System. Available in Calm Black, Velour Red, Precious Pink, and Pearl White. Very closely related to RS1000. Only differences are clip-on (screwless) face plates rather than screw-on kind, slightly more internal memory, newer software CD, and slight differences to scene and Auto Picture modes.