Sigma SD9 vs Sony A57
54 Imaging
39 Features
27 Overall
34
64 Imaging
57 Features
85 Overall
68
Sigma SD9 vs Sony A57 Key Specs
(Full Review)
- 3MP - APS-C Sensor
- 1.8" Fixed Display
- ISO 100 - 400
- 1/6000s Maximum Shutter
- No Video
- Sigma SA Mount
- 950g - 152 x 120 x 79mm
- Introduced November 2002
- Replacement is Sigma SD10
(Full Review)
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Following is a extended comparison of the Sigma SD9 vs Sony A57, former is a Advanced DSLR while the latter is a Entry-Level DSLR by companies Sigma and Sony. There exists a substantial gap between the sensor resolutions of the SD9 (3MP) and A57 (16MP) but they use the exact same sensor sizes (APS-C).
President Biden pushes bill mandating TikTok sale or banThe SD9 was unveiled 10 years prior to the A57 which is quite a big difference as far as technology is concerned. Both of the cameras come with different body type with the Sigma SD9 being a Mid-size SLR camera and the Sony A57 being a Compact SLR camera.
Before we go straight into a in-depth comparison, below is a simple summary of how the SD9 matches up vs the A57 with regards to portability, imaging, features and an overall score.
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Below is a preview of the gallery images for Sigma SD9 & Sony SLT-A57. The full galleries are provided at Sigma SD9 Gallery & Sony A57 Gallery.
Reasons to pick Sigma SD9 over the Sony A57
| SD9 | A57 |
|---|
Reasons to pick Sony A57 over the Sigma SD9
| A57 | SD9 | |||
|---|---|---|---|---|
| Revealed | September 2012 |  | November 2002 | More modern by 119 months |
| Screen type | Fully Articulated |  | Fixed | Fully Articulating screen |
| Screen dimension | 3" |  | 1.8" | Bigger screen (+1.2") |
| Screen resolution | 921k |  | 130k | Crisper screen (+791k dot) |
| Selfie screen |  | Easy selfies |
Common features in the Sigma SD9 and Sony A57
| SD9 | A57 | |||
|---|---|---|---|---|
| Manually focus |  | More exact focus | ||
| Touch screen |  | Lacking Touch screen |
Sigma SD9 vs Sony A57 Physical Comparison
For those who are intending to carry around your camera regularly, you're going to have to think about its weight and proportions. The Sigma SD9 comes with external dimensions of 152mm x 120mm x 79mm (6.0" x 4.7" x 3.1") and a weight of 950 grams (2.09 lbs) while the Sony A57 has measurements of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).
Examine the Sigma SD9 vs Sony A57 in our newest Camera plus Lens Size Comparison Tool.
Always remember, the weight of an ILC will change based on the lens you use at that time. Below is the front view sizing comparison of the SD9 vs the A57.
Factoring in dimensions and weight, the portability grade of the SD9 and A57 is 54 and 64 respectively.
Sigma SD9 vs Sony A57 Sensor Comparison
More often than not, its hard to visualise the contrast between sensor sizes purely by reading through technical specs. The pic here will provide you a much better sense of the sensor dimensions in the SD9 and A57.
As you can tell, both of those cameras have got the exact same sensor measurements albeit not the same resolution. You can expect the Sony A57 to give you more detail having an extra 13MP. Higher resolution will also help you crop shots much more aggressively. The more aged SD9 is going to be disadvantaged with regard to sensor innovation.
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Sigma SD9 vs Sony A57 Specifications
| Sigma SD9 | Sony SLT-A57 | |
|---|---|---|
| General Information | ||
| Make | Sigma | Sony |
| Model type | Sigma SD9 | Sony SLT-A57 |
| Class | Advanced DSLR | Entry-Level DSLR |
| Introduced | 2002-11-26 | 2012-09-13 |
| Physical type | Mid-size SLR | Compact SLR |
| Sensor Information | ||
| Sensor type | CMOS (Foveon X3) | CMOS |
| Sensor size | APS-C | APS-C |
| Sensor dimensions | 20.7 x 13.8mm | 23.5 x 15.6mm |
| Sensor surface area | 285.7mm² | 366.6mm² |
| Sensor resolution | 3MP | 16MP |
| Anti alias filter | ||
| Aspect ratio | 3:2 | 3:2 and 16:9 |
| Full resolution | 2268 x 1512 | 4912 x 3264 |
| Max native ISO | 400 | 16000 |
| Max boosted ISO | - | 25600 |
| Min native ISO | 100 | 100 |
| RAW photos | ||
| Autofocusing | ||
| Focus manually | ||
| Touch focus | ||
| AF continuous | ||
| AF single | ||
| Tracking AF | ||
| AF selectice | ||
| AF center weighted | ||
| Multi area AF | ||
| Live view AF | ||
| Face detect AF | ||
| Contract detect AF | ||
| Phase detect AF | ||
| Total focus points | - | 15 |
| Cross type focus points | - | 3 |
| Lens | ||
| Lens mount type | Sigma SA | Sony/Minolta Alpha |
| Number of lenses | 76 | 143 |
| Crop factor | 1.7 | 1.5 |
| Screen | ||
| Display type | Fixed Type | Fully Articulated |
| Display diagonal | 1.8 inches | 3 inches |
| Resolution of display | 130k dots | 921k dots |
| Selfie friendly | ||
| Liveview | ||
| Touch functionality | ||
| Display technology | - | Xtra Fine TFT drive with TruBlack technology |
| Viewfinder Information | ||
| Viewfinder | Optical (pentaprism) | Electronic |
| Viewfinder resolution | - | 1,440k dots |
| Viewfinder coverage | 98 percent | 100 percent |
| Viewfinder magnification | 0.77x | 0.7x |
| Features | ||
| Slowest shutter speed | 30 seconds | 30 seconds |
| Maximum shutter speed | 1/6000 seconds | 1/4000 seconds |
| Continuous shooting rate | - | 12.0 frames per second |
| Shutter priority | ||
| Aperture priority | ||
| Manually set exposure | ||
| Exposure compensation | Yes | Yes |
| Set WB | ||
| Image stabilization | ||
| Built-in flash | ||
| Flash distance | no built-in flash | 10.00 m (@ ISO 100) |
| Flash modes | - | Auto, On, Off, Red-Eye, Slow Sync, High Speed Sync, Rear Curtain, Fill-in, Wireless |
| External flash | ||
| AEB | ||
| WB bracketing | ||
| Maximum flash synchronize | 1/180 seconds | 1/160 seconds |
| Exposure | ||
| Multisegment | ||
| Average | ||
| Spot | ||
| Partial | ||
| AF area | ||
| Center weighted | ||
| Video features | ||
| Video resolutions | - | 1920 x 1080 (60p, 24p), 1440 x 1080 (30p), 640 x 480 (30 fps) |
| Max video resolution | None | 1920x1080 |
| Video format | - | MPEG-4, AVCHD, H.264 |
| Mic port | ||
| Headphone port | ||
| Connectivity | ||
| Wireless | None | Eye-Fi Connected |
| Bluetooth | ||
| NFC | ||
| HDMI | ||
| USB | USB 1.0 (1.5 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 | 950g (2.09 lbs) | 618g (1.36 lbs) |
| Dimensions | 152 x 120 x 79mm (6.0" x 4.7" x 3.1") | 132 x 98 x 81mm (5.2" x 3.9" x 3.2") |
| DXO scores | ||
| DXO All around rating | not tested | 75 |
| DXO Color Depth rating | not tested | 23.4 |
| DXO Dynamic range rating | not tested | 13.0 |
| DXO Low light rating | not tested | 785 |
| Other | ||
| Battery life | - | 550 pictures |
| Battery type | - | Battery Pack |
| Battery ID | - | NP-FM500H |
| Self timer | Yes (10 sec) | Yes (2 or 10 sec) |
| Time lapse recording | ||
| Type of storage | Compact Flash Type I or II | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| Card slots | One | One |
| Pricing at launch | $3,001 | $1,000 |
