OM System TG-7 has a
12.0MP (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features TruePic VIII processor. On the other hand, Olympus TG-870 has a
16.0MP (6.17 x 4.55 mm ) sized BSI-CMOS sensor and features TruePic VII processor.
Below you can see the TG-7 and TG-870 sensor size comparison.
Sensor Size and Resolution Comparison image of OM System TG-7 and Olympus TG-870 Cameras
OM System TG-7 and Olympus TG-870 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 OM System TG-7 has 32% larger pixel area compared to Olympus TG-870, it has potential to collect more light on pixel level hence 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
OM System TG-7
or the
Olympus TG-870 ,
including hyperfocal distance.
