Pentax K-x versus Sony Alpha 850 comparison chart
Edit this comparison chartPentax K-xSony Alpha 850
  • current rating is 2.54/5
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(13 ratings)
  • current rating is 3.07/5
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(27 ratings)
Resolution 12.9 Megapixel 25.72 Megapixel
Sensor size 23.6x15.8mm 35.9x24.0
Sensor type CMOS CMOS
Digital zoom No No
Built-in flash Yes Yes
Video out Yes Yes
Video recording Yes No
File formats JPEG, RAW, RAW - JPEG JPEG, RAW, RAW - JPEG
USB port USB 2.0 Hi-Speed USB 2.0 Hi-Speed
Firewire port No No
White balance Auto, Cloudy, Daylight, Flash, Fluorescent, Manual, Shade, Tungsten Auto, Cloudy, Daylight, Flash, Fluorescent, Incandescent, Kelvin, Manual, Shadow, Sunny
Self-timer Yes Yes
Bluetooth No No
Weight 515 g 850 g
Dimensions 122.5x91.5x67 mm 165.3x116.9x81.9 mm
Storage SDHC, Secure Digital CompactFlash type I, CompactFlash type II, Memory Stick Duo, Memory Stick Pro Duo, Microdrive
Battery 4x AA Li-Ion
Minimum shutter speed Bulb+30 sec Bulb+60 sec
Maximum shutter speed 1/6000 sec 1/8000 sec
Maximum resolution 4288x2428 pixels 6048x4032 pixels
Minimum resolution 1728x1152 pixels 1984x1320 pixels
Focal length multiplier 1.5 1
Auto focus Yes Yes
Manual focus Yes Yes
Aperture priority Yes Yes
Shutter priority Yes Yes
External flash Yes Yes
External flash type Hot-shoe Hot-shoe
Exposure compensation -3EV - +3EV with 1/2 or 1/3EV steps -3EV - +3EV with 1/3EV steps
Video sound Yes No
Frames per second (fps) 24 0
Voice recording Yes No
Optical viewfinder Yes Yes
Electronic viewfinder No No
LCD size 2.7-inch 3-inch
LCD monitor Yes Yes
Metering modes Center weighted, Multi-segment, Spot Spot
ISO ratings (light sensitivity) auto, 100 - 12800 auto, 100 - 6400

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