Pentax 645D vs Pentax S1
50 Imaging
75 Features
52 Overall
65
93 Imaging
37 Features
31 Overall
34
Pentax 645D vs Pentax S1 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
- Replacement is Pentax 645Z
(Full Review)
- 14MP - 1/2.3" Sensor
- 2.7" Fixed Screen
- ISO 80 - 6400
- Sensor-shift Image Stabilization
- 1280 x 720 video
- 28-140mm (F3.5-5.5) lens
- 157g - 114 x 58 x 28mm
- Introduced March 2011
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Following is a thorough overview of the Pentax 645D and Pentax S1, one is a Pro DSLR and the latter is a Small Sensor Compact and both of them are built by Pentax. There is a sizeable difference between the sensor resolutions of the 645D (40MP) and S1 (14MP) and the 645D (Medium format) and S1 (1/2.3") boast totally different sensor sizing.
Samsung Releases Faster Versions of EVO MicroSD CardsThe 645D was revealed 11 months prior to the S1 which means that they are of a similar generation. Both the cameras feature different body design with the Pentax 645D being a Large SLR camera and the Pentax S1 being a Compact camera.
Before going straight to a more detailed comparison, here is a short summary of how the 645D matches up versus the S1 for portability, imaging, features and an overall score.
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Reasons to pick Pentax 645D over the Pentax S1
| 645D | S1 | |||
|---|---|---|---|---|
| Screen size | 3" |  | 2.7" | Bigger screen (+0.3") |
| Screen resolution | 921k |  | 230k | Sharper screen (+691k dot) |
Reasons to pick Pentax S1 over the Pentax 645D
| S1 | 645D | |||
|---|---|---|---|---|
| Introduced | March 2011 |  | March 2010 | More modern by 11 months |
Common features in the Pentax 645D and Pentax S1
| 645D | S1 | |||
|---|---|---|---|---|
| Focus manually |  | Very exact focus | ||
| Screen type | Fixed |  | Fixed | Fixed screen |
| Selfie screen |  | Missing selfie screen | ||
| Touch screen |  | Missing Touch screen |
Pentax 645D vs Pentax S1 Physical Comparison
For anybody who is going to carry around your camera, you should think about its weight and volume. The Pentax 645D has physical 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 Pentax S1 has sizing of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") with a weight of 157 grams (0.35 lbs).
Analyze the Pentax 645D and Pentax S1 in the latest Camera with Lens Size Comparison Tool.
Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you use at the time. Here is a front view physical size comparison of the 645D versus the S1.
Taking into consideration size and weight, the portability rating of the 645D and S1 is 50 and 93 respectively.
Pentax 645D vs Pentax S1 Sensor Comparison
Usually, it is tough to envision the difference between sensor sizes purely by checking technical specs. The image underneath will offer you a better sense of the sensor sizes in the 645D and S1.
As you have seen, both cameras feature different resolutions and different sensor sizes. The 645D using its bigger sensor will make getting bokeh easier and the Pentax 645D will give more detail because of its extra 26 Megapixels. Higher resolution will help you crop pictures way more aggressively. The more aged 645D is going to be behind in sensor innovation.
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Pentax 645D vs Pentax S1 Specifications
| Pentax 645D | Pentax Optio S1 | |
|---|---|---|
| General Information | ||
| Manufacturer | Pentax | Pentax |
| Model type | Pentax 645D | Pentax Optio S1 |
| Class | Pro DSLR | Small Sensor Compact |
| Released | 2010-03-10 | 2011-03-02 |
| Body design | Large SLR | Compact |
| Sensor Information | ||
| Powered by | Prime II | - |
| Sensor type | CCD | CCD |
| Sensor size | Medium format | 1/2.3" |
| Sensor measurements | 44 x 33mm | 6.17 x 4.55mm |
| Sensor surface area | 1,452.0mm² | 28.1mm² |
| Sensor resolution | 40 megapixels | 14 megapixels |
| Anti alias filter | ||
| Aspect ratio | 4:3 | 1:1, 4:3 and 16:9 |
| Max resolution | 7264 x 5440 | 4288 x 3216 |
| Max native ISO | 1600 | 6400 |
| Min native ISO | 200 | 80 |
| RAW files | ||
| Min enhanced ISO | 100 | - |
| Autofocusing | ||
| Manual focusing | ||
| Autofocus touch | ||
| Continuous autofocus | ||
| Single autofocus | ||
| Tracking autofocus | ||
| Autofocus selectice | ||
| Autofocus center weighted | ||
| Autofocus multi area | ||
| Live view autofocus | ||
| Face detection focus | ||
| Contract detection focus | ||
| Phase detection focus | ||
| Total focus points | 11 | 9 |
| Lens | ||
| Lens support | Pentax 645AF2 | fixed lens |
| Lens zoom range | - | 28-140mm (5.0x) |
| Highest aperture | - | f/3.5-5.5 |
| Macro focusing distance | - | 1cm |
| Number of lenses | 6 | - |
| Crop factor | 0.8 | 5.8 |
| Screen | ||
| Range of screen | Fixed Type | Fixed Type |
| Screen diagonal | 3" | 2.7" |
| Resolution of screen | 921 thousand dot | 230 thousand dot |
| Selfie friendly | ||
| Liveview | ||
| Touch display | ||
| Screen tech | TFT Color LCD with wide-viewing angle and with AR coating | TFT color LCD with Anti-reflective coating |
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | None |
| Viewfinder coverage | 98% | - |
| Viewfinder magnification | 0.85x | - |
| Features | ||
| Min shutter speed | 30 seconds | 4 seconds |
| Max shutter speed | 1/4000 seconds | 1/1500 seconds |
| Continuous shutter speed | 1.0 frames/s | 1.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Expose Manually | ||
| Exposure compensation | Yes | - |
| Change white balance | ||
| Image stabilization | ||
| Inbuilt flash | ||
| Flash distance | no built-in flash | 3.90 m |
| Flash settings | Auto, On, Off, Red-eye, Slow Sync, Rear Curtain | Auto, On, Off, Red-eye, Soft |
| Hot shoe | ||
| AE bracketing | ||
| WB bracketing | ||
| Max flash sync | 1/125 seconds | - |
| Exposure | ||
| Multisegment metering | ||
| Average metering | ||
| Spot metering | ||
| Partial metering | ||
| AF area metering | ||
| Center weighted metering | ||
| Video features | ||
| Supported video resolutions | - | 1280 x 720 (30, 15 fps), 640 x 480 (30, 15 fps), 320 x 240 (30, 15 fps) |
| Max video resolution | None | 1280x720 |
| Video data format | - | Motion JPEG |
| Microphone jack | ||
| Headphone jack | ||
| 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 seal | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 1480 grams (3.26 pounds) | 157 grams (0.35 pounds) |
| Physical dimensions | 156 x 117 x 119mm (6.1" x 4.6" x 4.7") | 114 x 58 x 28mm (4.5" x 2.3" x 1.1") |
| DXO scores | ||
| DXO Overall rating | 82 | not tested |
| DXO Color Depth rating | 24.6 | not tested |
| DXO Dynamic range rating | 12.6 | not tested |
| DXO Low light rating | 1262 | not tested |
| Other | ||
| Battery life | 800 shots | 260 shots |
| Form of battery | Battery Pack | Battery Pack |
| Battery ID | D-LI90 | D-LI92 |
| Self timer | Yes (2 or 10 sec) | Yes (2 or 10 sec) |
| Time lapse shooting | ||
| Storage media | SD/SDHC | SD/SDHC/SDXC, Internal |
| Storage slots | 2 | Single |
| Price at release | $4,000 | $174 |