Pentax 645D vs Pentax K-x
50 Imaging
76 Features
52 Overall
66
69 Imaging
52 Features
47 Overall
50
Pentax 645D vs Pentax K-x Key Specs
(Full Review)
- 40MP - Medium format Sensor
- 3" Fixed Display
- ISO 200 - 1600
- No Anti-Alias Filter
- No Video
- Pentax 645AF2 Mount
- 1480g - 156 x 117 x 119mm
- Launched March 2010
- Later Model is Pentax 645Z
(Full Review)
- 12MP - APS-C Sensor
- 2.7" Fixed Screen
- ISO 100 - 6400 (Bump to 12800)
- Sensor based Image Stabilization
- 1/6000s Maximum Shutter
- 1280 x 720 video
- Pentax KAF2 Mount
- 580g - 123 x 92 x 68mm
- Announced December 2009
Pentax 645D vs Pentax K-x Overview
Following is a extended review of the Pentax 645D vs Pentax K-x, former is a Pro DSLR while the latter is a Entry-Level DSLR and both of them are created by Pentax. There is a large difference among the resolutions of the 645D (40MP) and K-x (12MP) and the 645D (Medium format) and K-x (APS-C) posses totally different sensor sizing.
Samsung Releases Faster Versions of EVO MicroSD CardsThe 645D was introduced 3 months after the K-x so they are of a similar age. Each of these cameras have different body design with the Pentax 645D being a Large SLR camera and the Pentax K-x being a Compact SLR camera.
Before delving into a complete comparison, here is a quick overview of how the 645D grades versus the K-x for portability, imaging, features and an overall score.
Pentax 645D vs Pentax K-x Gallery
Following is a preview of the gallery photos for Pentax 645D & Pentax K-x. The whole galleries are viewable at Pentax 645D Gallery & Pentax K-x Gallery.
Reasons to pick Pentax 645D over the Pentax K-x
645D | K-x | |||
---|---|---|---|---|
Screen dimensions | 3" | 2.7" | Bigger screen (+0.3") | |
Screen resolution | 921k | 230k | Crisper screen (+691k dot) |
Reasons to pick Pentax K-x over the Pentax 645D
K-x | 645D |
---|
Common features in the Pentax 645D and Pentax K-x
645D | K-x | |||
---|---|---|---|---|
Announced | March 2010 | December 2009 | Same age | |
Manually focus | Dial exact focus | |||
Screen type | Fixed | Fixed | Fixed screen | |
Selfie screen | Absent selfie screen | |||
Touch friendly screen | Absent Touch friendly screen |
Pentax 645D vs Pentax K-x Physical Comparison
When you are planning to carry around your camera regularly, you are going to need to factor its weight and proportions. The Pentax 645D has got physical measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs) while the Pentax K-x has measurements of 123mm x 92mm x 68mm (4.8" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs).
Check out the Pentax 645D vs Pentax K-x in our completely new Camera plus Lens Size Comparison Tool.Bear in mind, the weight of an ILC will change depending on the lens you have at the time. Below is a front view proportions comparison of the 645D compared to the K-x.
Looking at size and weight, the portability score of the 645D and K-x is 50 and 69 respectively.
Pentax 645D vs Pentax K-x Sensor Comparison
In many cases, it is very hard to visualise the difference in sensor sizes purely by looking through specs. The picture below should give you a much better sense of the sensor sizing in the 645D and K-x.
All in all, each of the cameras have different resolutions and different sensor sizes. The 645D having a bigger sensor will make shooting shallow depth of field easier and the Pentax 645D will provide you with extra detail using its extra 28 Megapixels. Higher resolution can also enable you to crop pictures a bit more aggressively.
Pentax 645D vs Pentax K-x Screen and ViewFinder
Photography Type Scores
Portrait Comparison
Street Comparison
Sports Comparison
Travel Comparison
Landscape Comparison
Vlogging Comparison
Pentax 645D vs Pentax K-x Specifications
Pentax 645D | Pentax K-x | |
---|---|---|
General Information | ||
Manufacturer | Pentax | Pentax |
Model | Pentax 645D | Pentax K-x |
Class | Pro DSLR | Entry-Level DSLR |
Launched | 2010-03-10 | 2009-12-23 |
Physical type | Large SLR | Compact SLR |
Sensor Information | ||
Processor Chip | Prime II | Prime |
Sensor type | CCD | CMOS |
Sensor size | Medium format | APS-C |
Sensor dimensions | 44 x 33mm | 23.6 x 15.8mm |
Sensor surface area | 1,452.0mm² | 372.9mm² |
Sensor resolution | 40 megapixel | 12 megapixel |
Anti aliasing filter | ||
Aspect ratio | 4:3 | 3:2 |
Peak resolution | 7264 x 5440 | 4288 x 2848 |
Highest native ISO | 1600 | 6400 |
Highest enhanced ISO | - | 12800 |
Min native ISO | 200 | 100 |
RAW photos | ||
Min enhanced ISO | 100 | - |
Autofocusing | ||
Focus manually | ||
AF touch | ||
AF continuous | ||
Single AF | ||
AF tracking | ||
AF selectice | ||
AF center weighted | ||
Multi area AF | ||
Live view AF | ||
Face detect focusing | ||
Contract detect focusing | ||
Phase detect focusing | ||
Number of focus points | 11 | 11 |
Lens | ||
Lens mount | Pentax 645AF2 | Pentax KAF2 |
Total lenses | 6 | 151 |
Focal length multiplier | 0.8 | 1.5 |
Screen | ||
Display type | Fixed Type | Fixed Type |
Display size | 3" | 2.7" |
Resolution of display | 921k dots | 230k dots |
Selfie friendly | ||
Liveview | ||
Touch capability | ||
Display technology | TFT Color LCD with wide-viewing angle and with AR coating | TFT LCD monitor |
Viewfinder Information | ||
Viewfinder type | Optical (pentaprism) | Optical (pentamirror) |
Viewfinder coverage | 98 percent | 96 percent |
Viewfinder magnification | 0.85x | 0.57x |
Features | ||
Min shutter speed | 30 secs | 30 secs |
Max shutter speed | 1/4000 secs | 1/6000 secs |
Continuous shutter rate | 1.0 frames/s | 5.0 frames/s |
Shutter priority | ||
Aperture priority | ||
Manual mode | ||
Exposure compensation | Yes | Yes |
Custom WB | ||
Image stabilization | ||
Built-in flash | ||
Flash range | no built-in flash | 16.00 m |
Flash settings | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain | Auto, On, Off, Red-Eye, Slow Sync, Rear curtain, Wireless |
Hot shoe | ||
AEB | ||
WB bracketing | ||
Max flash synchronize | 1/125 secs | 1/180 secs |
Exposure | ||
Multisegment exposure | ||
Average exposure | ||
Spot exposure | ||
Partial exposure | ||
AF area exposure | ||
Center weighted exposure | ||
Video features | ||
Video resolutions | - | 1280 x 720 (24 fps), 640 x 416 (24 fps) |
Highest video resolution | None | 1280x720 |
Video file format | - | Motion JPEG |
Mic support | ||
Headphone support | ||
Connectivity | ||
Wireless | None | None |
Bluetooth | ||
NFC | ||
HDMI | ||
USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
GPS | None | None |
Physical | ||
Environmental sealing | ||
Water proof | ||
Dust proof | ||
Shock proof | ||
Crush proof | ||
Freeze proof | ||
Weight | 1480 grams (3.26 pounds) | 580 grams (1.28 pounds) |
Physical dimensions | 156 x 117 x 119mm (6.1" x 4.6" x 4.7") | 123 x 92 x 68mm (4.8" x 3.6" x 2.7") |
DXO scores | ||
DXO Overall score | 82 | 72 |
DXO Color Depth score | 24.6 | 22.8 |
DXO Dynamic range score | 12.6 | 12.5 |
DXO Low light score | 1262 | 811 |
Other | ||
Battery life | 800 pictures | 1900 pictures |
Battery style | Battery Pack | Battery Pack |
Battery model | D-LI90 | 4 x AA |
Self timer | Yes (2 or 10 sec) | Yes (2 or 12 sec) |
Time lapse recording | ||
Type of storage | SD/SDHC | SD/SDHC card |
Card slots | Two | Single |
Price at release | $4,000 | $600 |