Pentax 645D vs Pentax K-x

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Main
Model
Price

launch
Announced
Body type
Camera subcategory
Sensor
Effective pixels
Max resolution
Sensor size
Sensor type
Processor
Image ratio w:h
Sensor photo detectors
Other resolutions
Image
ISO
Boosted ISO (minimum)
White balance presets
Custom white balance
Image stabilization
Uncompressed format
JPEG quality levels
Boosted ISO (maximum)
Photography features
Minimum shutter speed
Maximum shutter speed
Aperture priority
Shutter priority
Manual exposure mode
Subject / scene modes
Built-in flash
External flash
Flash modes
Continuous drive
Self-timer
Metering modes
Exposure compensation
AE Bracketing
Flash range
WB Bracketing
Screen / viewfinder
Articulated LCD
Screen size
Screen dots
Touch screen
Screen type
Viewfinder type
Viewfinder coverage
Viewfinder magnification
Live view
Videography features
Microphone
Speaker
Resolutions
File Format
Optics & Focus
Autofocus
Digital zoom
Manual focus
Number of focus points
Lens mount
Focal length multiplier
Physical
Weight (inc. batteries)
Dimensions
Environmentally sealed
Battery
Battery details
Battery Life (CIPA)
Storage
Storage types
Storage included
Connectivity
USB
Remote control
HDMI
Other features
Orientation sensor
Timelapse recording
GPS
Samples
Videos

Main
Model
Pentax 645D
Price

7.00/10

Main
Model
Pentax K-x
Price

launch
Announced
Mar 10, 2010
Body type
Camera subcategory
Large SLR
Sensor
Effective pixels
40 megapixels
Max resolution
7264 x 5440
Sensor size
Medium format (44 x 33 mm)
Sensor type
CCD
Processor
Prime II
Image ratio w:h
4:3
Sensor photo detectors
40 megapixels
Other resolutions
—
Image
ISO
Auto, 200, 400, 800, 1600 (100 with boost)
Boosted ISO (minimum)
100
White balance presets
8
Custom white balance
Yes (3)
Image stabilization
No
Uncompressed format
RAW
JPEG quality levels
Good, Better, Best
Boosted ISO (maximum)
—
Photography features
Minimum shutter speed
30 sec
Maximum shutter speed
1/4000 sec
Aperture priority
Yes
Shutter priority
Yes
Manual exposure mode
Yes
Subject / scene modes
No
Built-in flash
No
External flash
Yes (Hot-shoe, Wireless plus sync connector)
Flash modes
Auto, On, Off, Red-eye, Slow Sync, Rear Curtain
Continuous drive
1.1 fps
Self-timer
Yes (2 or 10 sec)
Metering modes
- Multi
- Center-weighted
- Spot
Exposure compensation
±5 (at 1/3 EV, 1/2 EV steps)
AE Bracketing
±2 (3, 5 frames at 1/7 EV, 1/5 EV, 1/3 EV, 1/2 EV, 2/3 EV, 1 EV steps)
Flash range
—
WB Bracketing
—
Screen / viewfinder
Articulated LCD
Fixed
Screen size
3″
Screen dots
921,000
Touch screen
No
Screen type
TFT Color LCD with wide-viewing angle and with AR coating
Viewfinder type
Optical (pentaprism)
Viewfinder coverage
98%
Viewfinder magnification
0.85×
Live view
—
Videography features
Microphone
Stereo
Speaker
None
Resolutions
—
File Format
—
Optics & Focus
Autofocus
- Phase Detect
- Multi-area
- Selective single-point
- Single
- Continuous
- Live View
Digital zoom
No
Manual focus
Yes
Number of focus points
11
Lens mount
Pentax 645AF2
Focal length multiplier
1×
Physical
Weight (inc. batteries)
1480 g (3.26 lb / 52.21 oz)
Dimensions
156 x 117 x 119 mm (6.14 x 4.61 x 4.69″)
Environmentally sealed
Yes (Water and dust resistant)
Battery
Battery Pack
Battery details
Lithium-Ion D-LI90 rechargeable battery & charger
Battery Life (CIPA)
—
Storage
Storage types
SD/SDHC
Storage included
None
Connectivity
USB
USB 2.0 (480 Mbit/sec)
Remote control
Yes (Optional, wired or wireless)
HDMI
—
Other features
Orientation sensor
Yes
Timelapse recording
Yes
GPS
None
Watch sample photos
Watch video reviews

launch
Announced
Sep 17, 2009
Body type
Camera subcategory
Compact SLR
Sensor
Effective pixels
12 megapixels
Max resolution
4288 x 2848
Sensor size
APS-C (23.6 x 15.8 mm)
Sensor type
CMOS
Processor
Prime
Image ratio w:h
3:2
Sensor photo detectors
13 megapixels
Other resolutions
3936 x 2684, 3072 x 2048, 1728 x 1152
Image
ISO
Auto, 200, 400, 800, 1600, 3200, 6400 (100-12800 with boost)
Boosted ISO (minimum)
100
White balance presets
9
Custom white balance
Yes (3)
Image stabilization
Sensor-shift
Uncompressed format
RAW
JPEG quality levels
Best, Better, Good
Boosted ISO (maximum)
12800
Photography features
Minimum shutter speed
30 sec
Maximum shutter speed
1/6000 sec
Aperture priority
Yes
Shutter priority
Yes
Manual exposure mode
Yes
Subject / scene modes
Yes
Built-in flash
Yes (Pop-up)
External flash
Yes (Hot-shoe, Wireless)
Flash modes
Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless
Continuous drive
4.7 fps
Self-timer
Yes (2 or 12 sec)
Metering modes
- Multi
- Center-weighted
- Spot
Exposure compensation
±3 (at 1/3 EV, 1/2 EV steps)
AE Bracketing
±1.5 (3 frames at 1/3 EV, 1/2 EV steps)
Flash range
16.00 m
WB Bracketing
No
Screen / viewfinder
Articulated LCD
Fixed
Screen size
2.7″
Screen dots
230,000
Touch screen
No
Screen type
TFT LCD monitor
Viewfinder type
Optical (pentamirror)
Viewfinder coverage
96%
Viewfinder magnification
0.85×
Live view
Yes
Videography features
Microphone
Mono
Speaker
—
Resolutions
1280 x 720 (24 fps), 640 x 416 (24 fps)
File Format
Motion JPEG
Optics & Focus
Autofocus
- Contrast Detect (sensor)
- Phase Detect
- Multi-area
- Selective single-point
- Single
- Continuous
- Face Detection
- Live View
Digital zoom
No
Manual focus
Yes
Number of focus points
11
Lens mount
Pentax KAF2
Focal length multiplier
1.5×
Physical
Weight (inc. batteries)
580 g (1.28 lb / 20.46 oz)
Dimensions
123 x 92 x 68 mm (4.84 x 3.62 x 2.68″)
Environmentally sealed
No
Battery
Battery Pack
Battery details
4 x AA batteries (Lithium, Alkaline or Ni-MH)
Battery Life (CIPA)
1900
Storage
Storage types
SD/SDHC card
Storage included
None
Connectivity
USB
USB 2.0 (480 Mbit/sec)
Remote control
Yes (Optional, wired or wireless)
HDMI
No
Other features
Orientation sensor
Yes
Timelapse recording
No
GPS
None
Watch sample photos
Watch video reviews