• 1/2.3 inch 28.1mm2
  • 10.1 megapixels
  • 32.00mm - 95.00mm (35mm eq.)
  • APS-C 369.7mm2
  • 12.4 megapixels
  • ISO 200 - 12,800
  • Detailed specifications
  • Pentax Optio E90
  • Pentax K-r
Links
Prices:    
Manufacturer URL: Manufacturer website Manufacturer website
Predecessor:   Pentax K-x
K-x vs K-r
Successor:    
General
Model Number: E90 K-r
Alternate Model Number(s):    
Camera Format: Ultra Compact SLR
Currently Manufactured: No No
Retail Price: $99.95 $849.95
Street Price:    
Date Available: 2010-02-15 2010-10-15
Tripod Mount: Yes Yes
Weight: 6.0 oz (170 g)
includes batteries
30.1 oz (852 g)
includes batteries, kit lens
Size: 3.6 x 2.4 x 1.1 in.
(92 x 61 x 28 mm)
4.9 x 3.8 x 2.7 in.
(125 x 97 x 68 mm)
Waterproof: No No
Waterproof Depth: n/a n/a
Image Sensor
Sensor Type: CCD CMOS
Sensor Manufacturer:    
Effective Megapixels: 10.1 12.4
Sensor Format: 1/2.3 inch APS-C
Sensor size: 28.0735mm2 (6.17mm x 4.55mm) 369.72mm2 (23.7mm x 15.6mm)
Approximate Pixel Pitch: 1.69 microns 5.53 microns
Focal Length Multiplier: n/a 1.5x
Aspect Ratio: 4:3 3:2
Color Filter Type: RGBG RGBG
Anti Aliasing Filter:   Fixed
Self-Cleaning: No Yes
Sensor shift image stabilization: No Yes
On-Sensor Phase Detect: No No
DxO Sensor Score:   72
DxO Color Depth Score (bits):   22.9
DxO Dynamic Range Score (evs):   12.4
DxO Maximum Effective ISO Score (iso):   750
Image Capture
Image Resolution: 3648 x 2736 (10.0 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)
4288 x 2848 (12.2 MP, Other),
3936 x 2624 (10.3 MP, 3:2),
3072 x 2048 (6.3 MP, 3:2),
1728 x 1152 (2.0 MP, 3:2)
Image File Format: JPEG (EXIF 2.2) JPEG (EXIF 2.21), 12-bit RAW (.PEF, .DNG)
Continuous-mode frames/second: n/a 5.6
Video Capture
Can take movies: Yes Yes
Movie Resolution: 640x480 (30/​15)
320x240 (30/​15)
1280x720 (25)
640x480 (25)
Movie File Format: AVI (Motion JPEG) 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: n/a Pentax K (KA/KAF/KAF2/3)
Lens: Pentax Zoom; 7 elements, 6 groups, 3 aspheric smc Pentax DA L 18-55mm f/3.5-5.6 AL
Focal Length (35mm equivalent): 32 - 95mm 27 - 84mm
Focal Length (actual): 5.7 - 17.1mm 18 - 55mm
Zoom Ratio: 3.00x 3.00x
Aperture Range: f/2.9 (wide) - f/5.2 (tele) f/3.5 - 22 (W), f/5.6 - 38 (T)
Integrated ND Filter: No No
Normal Focus Range: 50 cm to Infinity
19.7 in to Infinity
25 cm to Infinity
9.8 in to Infinity
Macro Focus Range: 10 - 60 cm
3.9 - 23.6 in
 
Filter Thread: n/a 52.0mm
Thread Type: n/a n/a
Optical Image Stabilization: No No
Digital Zoom: Yes No
Digital Zoom Values: Up to 5.7x n/a
Auto Focus
Auto Focus: Yes Yes
Auto Focus Type: Contrast Detection: 3 point AF, Spot AF, Auto Tracking AF SAFOX IX TTL phase-detect 11-point (9 cross) AF: 11 pt auto, 5 pt auto, AF pt select, center/spot
Auto Focus Assist Light? No Yes
Manual Focus: Yes Yes
Viewfinder
Viewfinder: LCD Optical / LCD
Viewfinder Type:   SLR type; eye-level pentamirror, ~96% coverage, ~0.85x mag., -2.5 to +1.5 diopter
Focus Peaking: No No
EVF Resolution: n/a n/a
Viewfinder Magnification (35mm equivalent):   0.57x
Viewfinder Magnification (nominal/claimed):   0.85x
Display
Eye-level Viewfinder: No Yes
Rear Display: Yes Yes
Rear Display Size (inches): 2.7 3.0
Rear Display Resolution: 230,000 dots 921,000 dots
Touchscreen: No No
Articulating Screen: No No
Tilt Swivel Screen: No No
Selfie Screen: No No
Max Playback Zoom: 10.0x 16.0x
Top Deck Display: No
Exposure
Maximum ISO (native):   12800
Minimum ISO (native):   200
ISO Settings: Auto (100-800), 100, 200, 400, 800, 1600; Digital SR 100-1600 (5M) Auto: 200-12800 (1, 1/2, 1/3 EV steps), up to 1600 in Bulb, expandable to 100-25600; Manual: 200-12800 (1, 1/2, 1/3 EV steps), up to 1600 in Bulb, expandable to 100-25600
Auto ISO Mode: Yes Yes
White Balance Settings: Auto, Daylight, Shade, Tungsten, Fluorescent, Manual Auto, Daylight, Shade, Cloudy, Tungsten, Fluorescent (D, N, W, L), Flash, CTE, Manual
Shutter Speed Range: 1/2000 - 4 sec 1/6000 - 30 sec
Bulb Mode: No Yes
Exposure Compensation: +/- 2.0EV in 0.3EV steps +/- 3.0EV in 0.3EV steps
Metering Modes: TTL Multi-Segment 16-segment Multi, Center-weighted, Spot
Program Auto Exposure: Yes Yes
Aperture Priority: No Yes
Shutter Priority: No Yes
Full Manual Exposure: No Yes
Creative Exposure Modes: , Night Scene, Night Scene Portrait, Half Length Portrait, Movie, Landscape, Flower, Portrait, Surf & Snow, Sport, Digital SR (5M), Kids, Pet, Food, Natural Skin Tone, Candlelight, Digital Panorama (2M per frame), Frame Composite (3M), Sunset Picture (Portrait, Landscape, Macro, Action, Night Scene Portrait, Standard Flash Off), Scene (Night Scene, Surf & Snow, Food, Sunset, Kids, Pet, Candlelight, Museum, Stage Lighting [JPG], Night Snap [JPG], Night Scene HDR [JPG]), Sensitivity Priority
Self Timer: 2 or 10 seconds 2 or 12 seconds
Time Lapse (intervalometer):    
High Resolution Composite: No No
Flash
Built-in Flash: Yes Yes
Flash Modes: Auto, On, Off, Red-Eye Reduction On, off, redeye, slow sync, slow sync w redeye, slow sync w trailing curtain, wireless
Flash Guide Number (ISO 100): n/a 12.0 m / 39.4 ft.
Flash Range Description: 18’ (wide, auto ISO), 9.8’ (tele, auto ISO) Depends on lens
Max Flash Sync:   1/180
Flash Exposure Compensation:   -2 to +1 EV in 0.5EV steps
External Flash Connection: n/a Hot Shoe
Built-In Wireless Flash Control:   Full TTL exposure
Image Storage
Usable Memory Types: SD / SDHC SD / SDHC / SDXC
UHS Support:    
Other Memory:    
Dual Card Slots: No No
RAW Capture Support: No Yes
Uncompressed Format:   12-bit RAW (.PEF, .DNG)
Movie File Format: AVI (Motion JPEG) AVI (Motion JPEG)
Included Memory: 6.0 MB No memory included
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 Yes
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: Yes
Remote Control Type:   Optional IR
Connections (extended): DC Input IrSimple infrared data transfer
Performance Timing
Cycle time for JPEG shooting in single shot mode (seconds per frame, max resolution):   0.31
Cycle time for RAW shooting in single shot mode (seconds per frame):   0.31
Buffer size for RAW shooting in single shot mode (frames):   17
Cycle time for RAW+JPEG shooting in single shot mode (seconds per shot):    
Camera penalizes early shutter press? No
JPEG shooting speed in burst mode (fps, max resolution):   5.6
Buffer size for JPEG shooting in burst mode (frames, max resolution):   30
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):   0.11 seconds
Shutter lag (full AF, tele):    
Shutter lag (full AF, live view - DSLR):    
Shutter lag (prefocused, live view - DSLR):    
Shutter Lag (manual focus):   0.098 seconds
Shutter lag (full AF, with flash):   0.15 seconds
Shutter Lag (prefocused):   0.097 seconds
Shutter Lag (notes):   OVF: Full AF lag, Auto-Area: 0.118s Live View: Contrast-Detect AF: 1.049s Phased-Detect AF: 1.197s Prefocused: 0.335s
Startup Time:   0.3 seconds
Play -> Record Time:   0.3 seconds
Flash cycle time, full power:    
Power
Battery Life, Stills (CIPA Rating Monitor/Live View): 600 shots (Lithium AA)  
Battery Life, Still (CIPA Rating OVF/EVF):   470 shots
Battery Life, Video:    
Battery Form Factor: 2 x AA Proprietary D-LI109
Usable Battery Types: Alkaline or Lithium disposable, NiMH rechargeable Lithium-ion rechargeable or 4 AAs with D-BH109
Batteries Included: 2 x AA Alkaline disposables 1 x Proprietary D-LI109 Lithium-ion rechargeable
Battery Charger Included (dedicated charger or AC/USB adapter): No Yes
Dedicated Battery Charger Included:
Internal Charging Supported:
Software
Included Software: CD-ROM S-SW104 Software CD-ROM S-SW110
OS Compatibility:   Windows XP/Vista/7, MacOS-X 10.3+
Miscellaneous
Notes & Features: Available in Black or Wine Red. Sensor-shift shake reduction, new 11-point SAFOX IX AF system with viewfinder focus indicators, 3-inch hi-res LCD, 6fps burst mode, 720p movies, dual power source (lithium-ion battery pack or 4 AAs with optional D-BH109 battery holder), improved in-camera HDR image capture including a Night Scene HDR mode. Available in Traditional Black, Classic White and Red.