Sony A300 has a
10.0MP APS-C (23.6 x 15.8 mm ) sized CCD sensor . On the other hand, Canon 5D MIV has a
30.0MP Full frame (36 x 24 mm ) sized CMOS sensor and features Digic 6+ processor.
Canon 5D MIV's sensor provides 20MP 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 5D MIV sensor size comparison.
Sensor Size and Resolution Comparison image of Sony A300 and Canon 5D MIV Cameras
As seen above, Canon 5D MIV has a 2.3x Larger sensor area than Sony A300. Larger sensors give photographer more control on the depth of field and blurry background compared to smaller sensor when shot in 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 Canon 5D MIV sensors have been tested by DxO and the results show that 5D MIV has a better overall score of 91, 27 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
Canon 5D MIV
91
24.8 bits
13.6 Evs
2995 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
Canon 5D MIV ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Full frame),
so compare them at the same framing rather than the same focal length.
Put the same focal length on the smaller sensor and it will show less depth of
field, not more, because it also crops tighter. The calculator shows the
full frame equivalent focal length for each body so you can match the framing.
