Sony HX90V has a
18.0MP (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features Bionz X processor. On the other hand, Canon SD990 IS has a
15.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized CCD sensor .
Below you can see the HX90V and SD990 IS sensor size comparison.
Sensor Size and Resolution Comparison image of Sony HX90V and Canon SD990 IS Cameras
As seen above, Canon SD990 IS has a 1.5x Larger sensor area than Sony HX90V. 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
Sony HX90V
or the
Canon SD990 IS ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
( versus 1/1.7-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.
