Pentax 645D vs Sony A450
50 Imaging
75 Features
52 Overall
65
65 Imaging
53 Features
52 Overall
52
Pentax 645D vs Sony A450 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
- Announced March 2010
- Later Model is Pentax 645Z
(Full Review)
- 14MP - APS-C Sensor
- 2.7" Fixed Display
- ISO 200 - 12800
- Sensor based Image Stabilization
- No Video
- Sony/Minolta Alpha Mount
- 560g - 137 x 104 x 81mm
- Introduced January 2010
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Following is a detailed analysis of the Pentax 645D and Sony A450, one is a Pro DSLR and the other is a Entry-Level DSLR by brands Pentax and Sony. There is a sizeable difference between the sensor resolutions of the 645D (40MP) and A450 (14MP) and the 645D (Medium format) and A450 (APS-C) offer different sensor dimensions.
Pentax 17 Pre-Orders Outperform Expectations by a LandslideThe 645D was launched 3 months after the A450 so they are of a similar generation. The two cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony A450 being a Compact SLR camera.
Before diving right into a in-depth comparison, here is a short highlight of how the 645D matches up against the A450 in regards to portability, imaging, features and an overall score.
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Below is a sample of the gallery pics for Pentax 645D and Sony Alpha DSLR-A450. The complete galleries are provided at Pentax 645D Gallery and Sony A450 Gallery.
Reasons to pick Pentax 645D over the Sony A450
| 645D | A450 | |||
|---|---|---|---|---|
| Display dimensions | 3" |  | 2.7" | Larger display (+0.3") |
| Display resolution | 921k |  | 230k | Clearer display (+691k dot) |
Reasons to pick Sony A450 over the Pentax 645D
| A450 | 645D |
|---|
Common features in the Pentax 645D and Sony A450
| 645D | A450 | |||
|---|---|---|---|---|
| Introduced | March 2010 |  | January 2010 | Similar generation |
| Focus manually |  | Dial accurate focusing | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Selfie screen |  | Neither offers selfie screen | ||
| Touch friendly display |  | Neither offers Touch friendly display |
Pentax 645D vs Sony A450 Physical Comparison
When you are intending to carry around your camera often, you'll need to think about its weight and dimensions. The Pentax 645D offers physical measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) while the Sony A450 has dimensions of 137mm x 104mm x 81mm (5.4" x 4.1" x 3.2") and a weight of 560 grams (1.23 lbs).
Contrast the Pentax 645D and Sony A450 in the latest Camera and Lens Size Comparison Tool.
Remember that, the weight of an Interchangeable Lens Camera will vary based on the lens you are utilizing at that time. Following is a front view measurement comparison of the 645D versus the A450.
Looking at size and weight, the portability score of the 645D and A450 is 50 and 65 respectively.
Pentax 645D vs Sony A450 Sensor Comparison
Generally, its hard to imagine the gap between sensor sizes simply by going over specs. The pic underneath will provide you a better sense of the sensor measurements in the 645D and A450.
All in all, each of the cameras have different megapixel count and different sensor sizes. The 645D because of its larger sensor is going to make achieving shallow depth of field less difficult and the Pentax 645D will deliver greater detail utilizing its extra 26MP. Greater resolution can also let you crop images a bit more aggressively.
Pentax 645D vs Sony A450 Screen and ViewFinder
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Pentax 645D vs Sony A450 Specifications
| Pentax 645D | Sony Alpha DSLR-A450 | |
|---|---|---|
| General Information | ||
| Brand Name | Pentax | Sony |
| Model type | Pentax 645D | Sony Alpha DSLR-A450 |
| Type | Pro DSLR | Entry-Level DSLR |
| Announced | 2010-03-10 | 2010-01-05 |
| Physical type | Large SLR | Compact SLR |
| Sensor Information | ||
| Processor Chip | Prime II | Bionz |
| Sensor type | CCD | CMOS |
| Sensor size | Medium format | APS-C |
| Sensor dimensions | 44 x 33mm | 23.4 x 15.6mm |
| Sensor surface area | 1,452.0mm² | 365.0mm² |
| Sensor resolution | 40 megapixels | 14 megapixels |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 3:2 and 16:9 |
| Maximum resolution | 7264 x 5440 | 4592 x 3056 |
| Maximum native ISO | 1600 | 12800 |
| Min native ISO | 200 | 200 |
| RAW files | ||
| Min boosted ISO | 100 | - |
| Autofocusing | ||
| Manual focusing | ||
| Touch to focus | ||
| Continuous autofocus | ||
| Autofocus single | ||
| Tracking autofocus | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detect focus | ||
| Contract detect focus | ||
| Phase detect focus | ||
| Total focus points | 11 | 9 |
| Lens | ||
| Lens support | Pentax 645AF2 | Sony/Minolta Alpha |
| Total lenses | 6 | 143 |
| Crop factor | 0.8 | 1.5 |
| Screen | ||
| Type of display | Fixed Type | Fixed Type |
| Display size | 3 inch | 2.7 inch |
| Display resolution | 921k dots | 230k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch display | ||
| Display technology | TFT Color LCD with wide-viewing angle and with AR coating | TFT Clear Photo Color LCD |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Optical (pentamirror) |
| Viewfinder coverage | 98 percent | 95 percent |
| Viewfinder magnification | 0.85x | 0.53x |
| Features | ||
| Lowest shutter speed | 30 secs | 30 secs |
| Highest shutter speed | 1/4000 secs | 1/4000 secs |
| Continuous shooting rate | 1.0fps | 7.0fps |
| Shutter priority | ||
| Aperture priority | ||
| Manual mode | ||
| Exposure compensation | Yes | Yes |
| Custom white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | 12.00 m (at ISO 100) |
| Flash options | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain | Auto, Fill, Rear Sync, Slow Sync, Wireless/ High Speed Sync |
| External flash | ||
| AEB | ||
| White balance bracketing | ||
| Highest flash synchronize | 1/125 secs | 1/160 secs |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Maximum video resolution | None | None |
| Mic port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | None | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | None | None |
| Physical | ||
| Environment sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 1480g (3.26 lbs) | 560g (1.23 lbs) |
| Physical dimensions | 156 x 117 x 119mm (6.1" x 4.6" x 4.7") | 137 x 104 x 81mm (5.4" x 4.1" x 3.2") |
| DXO scores | ||
| DXO All around rating | 82 | 66 |
| DXO Color Depth rating | 24.6 | 21.8 |
| DXO Dynamic range rating | 12.6 | 11.8 |
| DXO Low light rating | 1262 | 769 |
| Other | ||
| Battery life | 800 shots | 1050 shots |
| Form of battery | Battery Pack | Battery Pack |
| Battery ID | D-LI90 | NP-FM500H |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse feature | ||
| Storage type | SD/SDHC | SD/ SDHC, Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | Two | Single |
| Price at launch | $4,000 | $1,241 |