What happens when you shoot at a lower image size then the maximum of your camera?


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#1
What happens when you shoot at a lower image size then the maximum of your camera? For instance, on a 10MP cam, you shoot at a small setting, ie 2.5MP instead of the large setting of 10MP.

Does the camera use a smaller part of the sensor or does the camera uses the entire sensor and somehow output the file to 2.5MP?

I am just curious.

If the camera uses a smaller part of the sensor, does it mean lower image quality.

Anyone here know how it works?

Thanks.
 

Timolol

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Sep 24, 2009
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#3
If it uses a smaller part of the sensor, wouldn't it be cropped (or appear to have been zoomed-in)? ;)
 

#5
Hey guy, that makes sense. The camera downsizes the image taken, and not use a smaller part of the sensor.

I am curious to know if there is a image quality difference too whether the cam does it for us, or we do that later in PCs. If I ever find time to test it myself, it will be great.

But if anyone here has the answers, I would love to hear!
 

madmartian

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May 2, 2009
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#6
Sensor is like a car, whether it ferries 4 persons or 1 person, its still the same car. So if you have a 4 seater car & you want to ferry yourself, do you use only 1 wheel to ferry yourself? ;p So whether its low res or high res, its still the same whole sensor. ;)
 

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