Canon ELPH 135 has a
16.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor and features Digic 4+ processor. On the other hand, Canon SD780 IS has a
12.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor .
Below you can see the ELPH 135 and SD780 IS sensor size comparison.
Sensor Size and Resolution Comparison image of Canon ELPH 135 and Canon SD780 IS Cameras
Canon ELPH 135 and Canon SD780 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. On the other hand, since Canon SD780 IS has 32% larger pixel area (2.34µm 2 vs 1.76µm 2 ) compared to Canon ELPH 135, it has larger pixel area to collect light hence potential to have less noise in low light / High ISO images.
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
Canon ELPH 135
or the
Canon SD780 IS ,
including hyperfocal distance.
