Both Samsung Galaxy Camera 4G and Canon SX170 IS have 1/2.3-inch sized 16.0 MP resolution sensors so sensor size and resolution is not a differentiator between these two cameras.
Below you can see the Galaxy Camera 4G and SX170 IS sensor size comparison.
Sensor Size and Resolution Comparison image of Samsung Galaxy Camera 4G and Canon SX170 IS Cameras
Samsung Galaxy Camera 4G and Canon SX170 IS 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.
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
Samsung Galaxy Camera 4G
or the
Canon SX170 IS ,
including hyperfocal distance.
