Pentax K-S1 vs Sigma SD1
69 Imaging
63 Features
70 Overall
65
77 Imaging
54 Features
43 Overall
49
Pentax K-S1 vs Sigma SD1 Key Specs
(Full Review)
- 20MP - APS-C Sensor
- 3" Fixed Display
- ISO 100 - 51200
- Sensor based Image Stabilization
- No Anti-Alias Filter
- 1/6000s Maximum Shutter
- 1920 x 1080 video
- Pentax KAF2 Mount
- 558g - 121 x 93 x 70mm
- Announced August 2014
- Replacement is Pentax K-S2
(Full Review)
- 15MP - APS-C Sensor
- 3" Fixed Display
- ISO 0 - 0
- No Video
- Sigma SA Mount
- n/ag - 146 x 113 x 80mm
- Launched September 2010
- Later Model is Sigma SD1 Merrill
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Let's look closer at the Pentax K-S1 vs Sigma SD1, both Advanced DSLR cameras by competitors Pentax and Sigma. There is a significant difference among the sensor resolutions of the K-S1 (20MP) and SD1 (15MP) but both cameras posses the same sensor measurements (APS-C).
Photobucket discusses licensing 13 billion images with AI firmsThe K-S1 was brought out 3 years after the SD1 which is a fairly sizable gap as far as camera tech is concerned. Both the cameras have the same body design (Mid-size SLR).
Before getting right into a in-depth comparison, here is a simple overview of how the K-S1 grades against the SD1 when it comes to portability, imaging, features and an overall mark.
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The following is a sample of the gallery pics for Pentax K-S1 and Sigma SD1. The entire galleries are available at Pentax K-S1 Gallery and Sigma SD1 Gallery.
Reasons to pick Pentax K-S1 over the Sigma SD1
| K-S1 | SD1 | |||
|---|---|---|---|---|
| Launched | August 2014 |  | September 2010 | Newer by 48 months |
| Display resolution | 921k |  | 460k | Clearer display (+461k dot) |
Reasons to pick Sigma SD1 over the Pentax K-S1
| SD1 | K-S1 |
|---|
Common features in the Pentax K-S1 and Sigma SD1
| K-S1 | SD1 | |||
|---|---|---|---|---|
| Manual focus |  | More precise focusing | ||
| Display type | Fixed |  | Fixed | Fixed display |
| Display dimensions | 3" |  | 3" | Equal display measurements |
| Selfie screen |  | Absent selfie screen | ||
| Touch display |  | Absent Touch display |
Pentax K-S1 vs Sigma SD1 Physical Comparison
For anybody who is planning to travel with your camera frequently, you'll have to consider its weight and volume. The Pentax K-S1 provides exterior dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs) while the Sigma SD1 has sizing of 146mm x 113mm x 80mm (5.7" x 4.4" x 3.1") along with a weight of n/a grams (0.00 lbs).
Contrast the Pentax K-S1 vs Sigma SD1 in the new Camera with Lens Size Comparison Tool.
Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have at that moment. Underneath is a front view size comparison of the K-S1 and the SD1.
Considering size and weight, the portability rating of the K-S1 and SD1 is 69 and 77 respectively.
Pentax K-S1 vs Sigma SD1 Sensor Comparison
Often, its difficult to visualise the gap in sensor dimensions purely by researching technical specs. The image below should give you a far better sense of the sensor dimensions in the K-S1 and SD1.
As you can tell, the two cameras provide the same sensor dimensions but not the same resolution. You should expect to see the Pentax K-S1 to result in more detail having its extra 5 Megapixels. Greater resolution will also make it easier to crop pics more aggressively. The fresher K-S1 will have a benefit in sensor innovation.
Pentax K-S1 vs Sigma SD1 Screen and ViewFinder
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Pentax K-S1 vs Sigma SD1 Specifications
| Pentax K-S1 | Sigma SD1 | |
|---|---|---|
| General Information | ||
| Company | Pentax | Sigma |
| Model type | Pentax K-S1 | Sigma SD1 |
| Category | Advanced DSLR | Advanced DSLR |
| Announced | 2014-08-27 | 2010-09-21 |
| Physical type | Mid-size SLR | Mid-size SLR |
| Sensor Information | ||
| Chip | Prime MII | Dual True II |
| Sensor type | CMOS | CMOS (Foveon X3) |
| Sensor size | APS-C | APS-C |
| Sensor measurements | 23.5 x 15.6mm | 24 x 16mm |
| Sensor area | 366.6mm² | 384.0mm² |
| Sensor resolution | 20 megapixel | 15 megapixel |
| Anti alias filter | ||
| Aspect ratio | 3:2 | - |
| Highest resolution | 5472 x 3648 | 4800 x 3200 |
| Highest native ISO | 51200 | - |
| Lowest native ISO | 100 | - |
| RAW photos | ||
| Autofocusing | ||
| Focus manually | ||
| Touch to focus | ||
| AF continuous | ||
| AF single | ||
| AF tracking | ||
| Selective AF | ||
| Center weighted AF | ||
| Multi area AF | ||
| AF live view | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Total focus points | 11 | 11 |
| Cross type focus points | - | 2 |
| Lens | ||
| Lens mount type | Pentax KAF2 | Sigma SA |
| Amount of lenses | 151 | 76 |
| Focal length multiplier | 1.5 | 1.5 |
| Screen | ||
| Display type | Fixed Type | Fixed Type |
| Display diagonal | 3 inch | 3 inch |
| Display resolution | 921 thousand dots | 460 thousand dots |
| Selfie friendly | ||
| Liveview | ||
| Touch friendly | ||
| Viewfinder Information | ||
| Viewfinder type | Optical (pentaprism) | Optical (pentaprism) |
| Viewfinder coverage | 100% | 96% |
| Viewfinder magnification | 0.64x | 0.64x |
| Features | ||
| Slowest shutter speed | 30s | 15s |
| Maximum shutter speed | 1/6000s | 1/2000s |
| Continuous shooting rate | 5.4 frames/s | 5.0 frames/s |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Custom WB | ||
| Image stabilization | ||
| Integrated flash | ||
| Flash distance | 10.00 m (at ISO 100) | - |
| Flash modes | Auto, auto + redeye, on, on + redeye reduction, slow sync, trailing curtain sync, manual | - |
| External flash | ||
| Auto exposure bracketing | ||
| WB bracketing | ||
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | 1920 x 1080 (30,25,24 fps), 1280 x 720 (60,50 fps) | - |
| Highest video resolution | 1920x1080 | None |
| Video file format | H.264 | - |
| Microphone port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | Eye-Fi Connected | None |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 2.0 (480 Mbit/sec) | USB 2.0 (480 Mbit/sec) |
| GPS | Optional | None |
| Physical | ||
| Environmental sealing | ||
| Water proofing | ||
| Dust proofing | ||
| Shock proofing | ||
| Crush proofing | ||
| Freeze proofing | ||
| Weight | 558g (1.23 lbs) | - |
| Physical dimensions | 121 x 93 x 70mm (4.8" x 3.7" x 2.8") | 146 x 113 x 80mm (5.7" x 4.4" x 3.1") |
| DXO scores | ||
| DXO All around rating | 78 | not tested |
| DXO Color Depth rating | 23.5 | not tested |
| DXO Dynamic range rating | 13.0 | not tested |
| DXO Low light rating | 1061 | not tested |
| Other | ||
| Battery life | 410 images | - |
| Battery type | Battery Pack | - |
| Battery ID | D-LI109 | - |
| Self timer | Yes ( 2 or 12 seconds) | Yes |
| Time lapse feature | ||
| Type of storage | SD/SDHC/SDXC | Compact Flash (Type I, UDMA compatible) |
| Card slots | One | One |
| Retail pricing | $339 | $2,339 |