Sony A300 has a
10.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor . On the other hand, Sony A3000 has a
20.0MP APS-C (23.5 x 15.6 mm ) sized CMOS sensor and features BIONZ processor.
Sony A3000's sensor provides 10MP more than Sony A300's sensor, which gives a significant advantage in real life. You can print your images larger or crop more freely.
On the other hand, please keep in mind that Max sensor resolution is not the only determinant of resolving power. Factors such as the optical elements, low pass filter, pixel size and sensor technology also affects the final resolution of the captured image.
Below you can see the A300 and A3000 sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A300 and Sony A3000 Cameras
Sony A300 and Sony A3000 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the same focal length and aperture.
DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. It scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Sony A300 and Sony A3000 sensors have been tested by DxO and the results show that A3000 has a better overall score of 78, 14 points higher compared to A300's score of 64.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Sony A300
64
22.5 bits
11.4 Evs
538 ISO
Sony A3000
78
23.7 bits
12.8 Evs
1068 ISO
Sensor size sets the circle of confusion, so it drives how much depth of field each
of these bodies gives you at a given aperture. You can calculate it exactly for the
Sony A300
or the
Sony A3000 ,
including hyperfocal distance.
