Pentax K200D has a
10.0MP APS-C (23.5 x 15.7 mm ) sized CCD sensor . On the other hand, Panasonic G5 has a
16.0MP Four Thirds (17.3 x 13 mm ) sized CMOS sensor and features Venus Engine VII FHD processor.
Panasonic G5's sensor provides 6MP more than Pentax K200D'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 K200D and G5 sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K200D and Panasonic G5 Cameras
As seen above, Pentax K200D has a 1.6x Larger sensor area than Panasonic G5. 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
Both Pentax K200D and Panasonic G5 sensors have been tested by DxoMark. DxoMark 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. Of the two cameras that we are comparing, K200D has scored 64, 3 points higher than G5.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K200D
64
22.4 bits
11.4 Evs
561 ISO
Panasonic G5
61
21.4 bits
11.6 Evs
618 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
Pentax K200D
or the
Panasonic G5 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C versus Four Thirds),
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.
