Both Panasonic G6 and Panasonic FZ70 have 16.0 MP resolution sensors but Panasonic G6's sensor is Four Thirds (17.3 x 13 mm ) and Panasonic FZ70's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Panasonic G6's has a larger sensor area with the same resolution, this means that it also has a larger pixel area hence better light collecting capacity for a given aperture compared to Panasonic FZ70.
Below you can see the G6 and FZ70 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic G6 and Panasonic FZ70 Cameras
As seen above, Panasonic G6 has a 8.0x Larger sensor area than Panasonic FZ70. 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 Panasonic G6 and Panasonic FZ70 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, G6 has scored 61, 20 points higher than FZ70.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic G6
61
21.3 bits
11.5 Evs
639 ISO
Panasonic FZ70
41
19.4 bits
10.8 Evs
171 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
Panasonic G6
or the
Panasonic FZ70 ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(Four Thirds versus 1/2.3-inch),
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.
