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If a full frame sensor and an APS-C sensor are both divided into 12,000,000 pixels (or 12 megapixels, 4000x3000), will they have same resolution if all other parameters are same?
If a full frame sensor and an APS-C sensor are both divided into 12,000,000 pixels (or 12 megapixels, 4000x3000), will they have same resolution if all other parameters are same?
What's your definition of resolution? Most people now seem to equate resolution with pixel count. So given that definition, your two sensors would have the same resolution. A more scientific definition of resolution is the ability of the sensor to discern small details. On one hand in your example the APS-C sensor has a higher pixel density, which to me would theoretically give you the ability to discern smaller details. On the other hand, noise plays a big factor in detail resolution so FF sensor would have the advantage there. Lenses are the biggest factors in detail resolution though and generally one finds better lenses on FF setups. But I would conjecture that given the same lens on two high quality sensors, at low ISO, the APS-C lens should resolve more details.
If a full frame sensor and an APS-C sensor are both divided into 12,000,000 pixels (or 12 megapixels, 4000x3000), will they have same resolution if all other parameters are same?
APS-C format has an aspect ratio of around 3:2, the same as in a full frame camera. The exact size of an APS-C digital sensor varies slightly depending on the camera manufacturer... They could have the same resolution...
Probably the simplest way to think of it is that your resolution is generally going to increase with pixel count per unit area of the image, or pixel density as mentioned above. This of course assumes that the sensor is viewing the exact same portion of the scene, regardless of lens/sensor combination, otherwise things get more complicated.
Another factor not often considered is what is the maximum print size, or viewing size, of the final image that you need? That will take into account the resolution of the human eye, the viewing distance and sensor resolution to give you a more complete picture (pun intended!).
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