Nikon D6 has a
21.0MP Full frame (35.9 x 23.9 mm ) sized CMOS sensor and features Expeed 6 processor. On the other hand, Sony A900 has a
25.0MP Full frame (35.9 x 24 mm ) sized CMOS sensor and features Bionz processor.
Below you can see the D6 and A900 sensor size comparison.
Sensor Size and Resolution Comparison image of Nikon D6 and Sony A900 Cameras
Nikon D6 and Sony A900 have almost the same sensor size, so neither of them has any significant advantage over the other in terms of providing control over depth of field when used with the 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
Nikon D6
or the
Sony A900 ,
including hyperfocal distance.
