Pentax S1 has a
14.0MP 1/2.3-inch (6.17 x 4.55 mm ) sized CCD sensor . On the other hand, Ricoh Theta V has a
12.0MP (6.17 x 4.55 mm ) sized CMOS sensor and features Snapdragon 625 processor.
Below you can see the S1 and Theta V sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax S1 and Ricoh Theta V Cameras
Pentax S1 and Ricoh Theta V 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 Pentax S1 has 5% larger pixel area compared to Ricoh Theta V, 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
Pentax S1
or the
Ricoh Theta V ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(1/2.3-inch versus ),
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.
