Generally, some of the advantages of the Sony DSC-W310 compared to entry-level DSLR competitors include: it has a slightly larger screen (2.7" vs 2.5"), has image stabilization (sensor shift vs none), is newer (january, 2010 vs august, 2006), is much smaller (ultra compact 95x55x19 mm vs professional size 130x100x78 mm) and is slightly less expensive ($111.00 vs $749.00).
However, on average it doesn't shoot as fast continuously (1.1 fps vs 3 fps), has a much smaller sensor (1/2.3" 6.2x4.6mm vs APS-C 22.2x14.8mm), doesn't have a viewfinder (none vs pentamirror), users slower contrast detection autofocus (contrast detection vs phase detection) and doesn't shoot RAW.
Canon Rebel T3
1 year newer
$333 (body only)
$489 - $500 18-55mm lens
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Significant advantages of the T3 (vs the DSC-W310)
- Much larger sensor: APS-C 22.2x14.7mm vs 1/2.3" 6.2x4.6mm
- Has a viewfinder: Pentamirror vs None
- Faster autofocus: Phase detection vs Contrast detection
Significant disadvantages of the T3 (vs the DSC-W310)
- Much larger: Professional size 130x100x78 mm vs Ultra compact 95x55x19 mm
- No image stabilization: None vs Sensor shift
- Much thicker: 3.1" vs 0.7"
common strengths of the T3 and DSC-W310
- Light weight: 459 g vs 137 g
- Inexpensive: $333.00 vs $111.00
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Canon EOS Digital Rebel XTi
3 years older
$749 18-55mm lens
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Significant advantages of the Rebel XTi (vs the DSC-W310)
- Much larger sensor: APS-C 22.2x14.8mm vs 1/2.3" 6.2x4.6mm
- Has a viewfinder: Pentamirror vs None
- Shoots RAW
Significant disadvantages of the Rebel XTi (vs the DSC-W310)
- No image stabilization: None vs Sensor shift
- Significantly smaller screen: 2.5" vs 2.7"
- Much larger: Prosumer size 127x94x65 mm vs Ultra compact 95x55x19 mm
common strengths of the Rebel XTi and DSC-W310
- Very small: Prosumer size 127x94x65 mm vs Ultra compact 95x55x19 mm
- Very thin: 2.6" vs 0.7"
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