Both Panasonic GX7 and Samsung WB2200F have 16.0 MP resolution sensors but Panasonic GX7's sensor is Four Thirds (17.3 x 13 mm ) and Samsung WB2200F's sensor is 1/2.3-inch (6.17 x 4.55 mm ).
Since Panasonic GX7'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 Samsung WB2200F.
Below you can see the GX7 and WB2200F sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic GX7 and Samsung WB2200F Cameras
As seen above, Panasonic GX7 has a 8.0x Larger sensor area than Samsung WB2200F. 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.
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 GX7
or the
Samsung WB2200F ,
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.
