Olympus 1 has a 12.0MP 1/1.7-inch (7.44 x 5.58 mm ) sized BSI-CMOS sensor and features TruePic VI processor. You can shoot at maximum resolution of 3968 x 2976 pixels with aspect ratios of 1:1, 4:3, 3:2 and 16:9. 1 has a native ISO range of 100 - 12800 and it can save files in RAW format which gives you a wider room for post processing.
Olympus 1 is not the highest resolution Small Sensor camera. Canon SX740 HS with its 21.0MP sensor is leading in this class. Check the comparison of Olympus 1 vs Canon SX740 HS or take a look at Highest resolution Bridge cameras list.
Olympus 1 DxOMark Sensor Scores
DxOMark is a benchmark that scientifically assesses image quality of camera sensors. Olympus 1 sensor has been tested by DxO Mark and got an overall score of 51 for its image quality. You can find the details of their analysis of Olympus 1 here.
Let's look at how the size of the Olympus 1's 1/1.7-inch sensor compares with other standard sensor sizes.
Comparison image of Olympus 1 Sensor Size with other standard sensors
Sensor size is what determines the circle of confusion, and therefore how much
depth of field Olympus 1 gives you at any given aperture.
You can
calculate
the exact depth of field for the Olympus 1
at any focal length, aperture and subject distance, including the hyperfocal distance
for landscapes and how close you can get before the focus zone becomes too thin.
