Both Panasonic FZ150 and Panasonic FZ200 have 1/2.3-inch sized 12.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the FZ150 and FZ200 sensor size comparison.
Sensor Size and Resolution Comparison image of Panasonic FZ150 and Panasonic FZ200 Cameras
Panasonic FZ150 and Panasonic FZ200 have the same sensor sizes so they will provide same level of control over the depth of field when used with same focal length and aperture.
DxOMark Sensor Scores
Both Panasonic FZ150 and Panasonic FZ200 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, FZ150 has scored 40, 3 points higher than FZ200.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Panasonic FZ150
40
19.4 bits
10.9 Evs
132 ISO
Panasonic FZ200
37
19.1 bits
10.8 Evs
114 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 FZ150
or the
Panasonic FZ200 ,
including hyperfocal distance.