Pentax K-500 has a
16.0MP APS-C (23.7 x 15.7 mm ) sized CMOS sensor and features PRIME M processor. On the other hand, Samsung EX2F has a
12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor .
Below you can see the K-500 and EX2F sensor size comparison.
Sensor Size and Resolution Comparison image of Pentax K-500 and Samsung EX2F Cameras
As seen above, Pentax K-500 has a 9.0x Larger sensor area than Samsung EX2F. 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.
DxOMark Sensor Scores
Both Pentax K-500 and Samsung EX2F sensors have been tested by DxoMark. DxoMark scores camera sensors for color depth (DXO Portrait), dynamic range (DXO Landscape) and low-light sensitivity (DXO Sports), and also gives them an overall score. Of the two cameras that we are comparing, K-500 has scored 79, 31 points higher than EX2F.
Model
Overall
Color Depth
Dynamic Range
Low-light ISO
Pentax K-500
79
23.7 bits
13.1 Evs
1087 ISO
Samsung EX2F
48
20.0 bits
11.5 Evs
209 ISO
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 K-500
or the
Samsung EX2F ,
including hyperfocal distance.
One thing to watch when comparing these two: they have different sensor sizes
(APS-C 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.
