Pentax 645D vs Sony S2100
50 Imaging
74 Features
52 Overall
65
93 Imaging
34 Features
17 Overall
27
Pentax 645D vs Sony S2100 Key Specs
(Full Review)
- 40MP - Medium format Sensor
- 3" Fixed Screen
- ISO 200 - 1600
- No Anti-Alias Filter
- No Video
- Pentax 645AF2 Mount
- 1480g - 156 x 117 x 119mm
- Released March 2010
- New Model is Pentax 645Z
(Full Review)
- 12MP - 1/2.3" Sensor
- 3" Fixed Display
- ISO 100 - 3200
- 640 x 480 video
- 33-105mm (F3.1-5.6) lens
- 167g - 98 x 61 x 27mm
- Released January 2010
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On this page, we are analyzing the Pentax 645D vs Sony S2100, one is a Pro DSLR and the other is a Small Sensor Compact by brands Pentax and Sony. There exists a significant gap between the sensor resolutions of the 645D (40MP) and S2100 (12MP) and the 645D (Medium format) and S2100 (1/2.3") offer totally different sensor sizes.
Samsung Releases Faster Versions of EVO MicroSD CardsThe 645D was revealed 3 months after the S2100 and they are of a similar generation. Both cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony S2100 being a Compact camera.
Before delving right into a thorough comparison, here is a concise summary of how the 645D grades against the S2100 with respect to portability, imaging, features and an overall score.
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This is a sample of the gallery pictures for Pentax 645D and Sony Cyber-shot DSC-S2100. The full galleries are available at Pentax 645D Gallery and Sony S2100 Gallery.
Reasons to pick Pentax 645D over the Sony S2100
| 645D | S2100 | |||
|---|---|---|---|---|
| Focus manually |  | Dial precise focus | ||
| Display resolution | 921k |  | 230k | Clearer display (+691k dot) |
Reasons to pick Sony S2100 over the Pentax 645D
| S2100 | 645D |
|---|
Common features in the Pentax 645D and Sony S2100
| 645D | S2100 | |||
|---|---|---|---|---|
| Released | March 2010 |  | January 2010 | Similar generation |
| Display type | Fixed |  | Fixed | Fixed display |
| Display dimensions | 3" |  | 3" | Equal display dimensions |
| Selfie screen |  | Neither contains selfie screen | ||
| Touch friendly display |  | Lacking Touch friendly display |
Pentax 645D vs Sony S2100 Physical Comparison
For anyone who is going to carry around your camera, you will need to factor in its weight and dimensions. The Pentax 645D has got outer dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) whilst the Sony S2100 has dimensions of 98mm x 61mm x 27mm (3.9" x 2.4" x 1.1") having a weight of 167 grams (0.37 lbs).
Contrast the Pentax 645D vs Sony S2100 in the latest Camera and Lens Size Comparison Tool.
Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you use at that time. Following is a front view scale comparison of the 645D compared to the S2100.
Considering dimensions and weight, the portability rating of the 645D and S2100 is 50 and 93 respectively.
Pentax 645D vs Sony S2100 Sensor Comparison
Normally, it can be tough to visualise the difference between sensor sizes merely by reading through a spec sheet. The picture underneath may give you a better sense of the sensor dimensions in the 645D and S2100.
Clearly, each of these cameras have different megapixels and different sensor sizes. The 645D having a larger sensor will make shooting shallower DOF less difficult and the Pentax 645D will resolve more detail because of its extra 28MP. Greater resolution will help you crop images a bit more aggressively.
Pentax 645D vs Sony S2100 Screen and ViewFinder
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Pentax 645D vs Sony S2100 Specifications
| Pentax 645D | Sony Cyber-shot DSC-S2100 | |
|---|---|---|
| General Information | ||
| Brand Name | Pentax | Sony |
| Model | Pentax 645D | Sony Cyber-shot DSC-S2100 |
| Type | Pro DSLR | Small Sensor Compact |
| Released | 2010-03-10 | 2010-01-07 |
| Body design | Large SLR | Compact |
| Sensor Information | ||
| Processor Chip | Prime II | Bionz |
| Sensor type | CCD | CCD |
| Sensor size | Medium format | 1/2.3" |
| Sensor dimensions | 44 x 33mm | 6.17 x 4.55mm |
| Sensor area | 1,452.0mm² | 28.1mm² |
| Sensor resolution | 40 megapixel | 12 megapixel |
| Anti aliasing filter | ||
| Aspect ratio | 4:3 | 4:3, 3:2 and 16:9 |
| Maximum resolution | 7264 x 5440 | 4000 x 3000 |
| Maximum native ISO | 1600 | 3200 |
| Minimum native ISO | 200 | 100 |
| RAW images | ||
| Minimum boosted ISO | 100 | - |
| Autofocusing | ||
| Manual focus | ||
| Autofocus touch | ||
| Continuous autofocus | ||
| Single autofocus | ||
| Tracking autofocus | ||
| Autofocus selectice | ||
| Center weighted autofocus | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detection focus | ||
| Contract detection focus | ||
| Phase detection focus | ||
| Number of focus points | 11 | 9 |
| Lens | ||
| Lens mounting type | Pentax 645AF2 | fixed lens |
| Lens focal range | - | 33-105mm (3.2x) |
| Maximum aperture | - | f/3.1-5.6 |
| Macro focus range | - | 5cm |
| Total lenses | 6 | - |
| Focal length multiplier | 0.8 | 5.8 |
| Screen | ||
| Range of screen | Fixed Type | Fixed Type |
| Screen diagonal | 3 inches | 3 inches |
| Screen resolution | 921 thousand dot | 230 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Screen technology | TFT Color LCD with wide-viewing angle and with AR coating | - |
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | None |
| Viewfinder coverage | 98% | - |
| Viewfinder magnification | 0.85x | - |
| Features | ||
| Slowest shutter speed | 30 secs | 1 secs |
| Maximum shutter speed | 1/4000 secs | 1/1200 secs |
| Continuous shooting speed | 1.0 frames/s | 1.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | - |
| Set white balance | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash range | no built-in flash | 3.30 m |
| Flash settings | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain | Auto, On, Off, Slow syncro |
| External flash | ||
| AE bracketing | ||
| White balance bracketing | ||
| Maximum flash sync | 1/125 secs | - |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | - | 640 x 480 (30 fps), 320 x 240 (30 fps) |
| Maximum video resolution | None | 640x480 |
| Video data format | - | Motion JPEG |
| Mic input | ||
| Headphone input | ||
| 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 seal | ||
| Water proof | ||
| Dust proof | ||
| Shock proof | ||
| Crush proof | ||
| Freeze proof | ||
| Weight | 1480g (3.26 pounds) | 167g (0.37 pounds) |
| Physical dimensions | 156 x 117 x 119mm (6.1" x 4.6" x 4.7") | 98 x 61 x 27mm (3.9" x 2.4" x 1.1") |
| DXO scores | ||
| DXO All around score | 82 | not tested |
| DXO Color Depth score | 24.6 | not tested |
| DXO Dynamic range score | 12.6 | not tested |
| DXO Low light score | 1262 | not tested |
| Other | ||
| Battery life | 800 photos | - |
| Battery format | Battery Pack | - |
| Battery model | D-LI90 | 2 x AA |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Storage media | SD/SDHC | Memory Stick Duo/Pro Duo, optional SD, Internal |
| Storage slots | Two | 1 |
| Launch pricing | $4,000 | $0 |