Panasonic LX10 has a
20.0MP 1″ (13.2 x 8.8 mm ) sized BSI-CMOS sensor . On the other hand, Olympus TG-850 iHS has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features TruePic VII processor.
Below you can see the LX10 and TG-850 iHS sensor size comparison.
As seen above, Panasonic LX10 has a 4.1x Larger sensor area than Olympus TG-850 iHS. 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.