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Old Dec 7, 2004, 12:28 PM   #1
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I read that the quality of the camera is more than just mega pixels.

The size of the imager is also important.

How do you find those specs on a camera?

I am looking for 4-5Mps

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Old Dec 7, 2004, 12:44 PM   #2
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Steve often mentions the physical size of the sensor in this review. But how to know which size is better is difficult.

The general rule is that larger sensors are better. This often means that the pictures is produces have less noise in the image (it masks detail, which is bad.) The flip side is that larger sensors are more expensive and harder to make without having flaws.

The other aspect to this is that camera makers are getting better at reducing noise. This costs money, of course, so the cheaper cameras might not get this technology.

I seem to remember a post that talked about this issue and showed the sizes of the different image sensors and stuff. You might want to search the site for "sensor size" (or something similar) and see if you can find that thread.

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Old Dec 7, 2004, 12:52 PM   #3
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Steve gives the sensor size in the specs for his reviews. You can use these references to do your own math as to the density. The higher the pixel density the more the noise in general. Technology hasn't improved the sensors as fast as they are growing in density.

Some sensors are better than others, so empirical comparison of images is the best way to determine quality IMO. And different cameras handle noise reduction differently. If you do a search for the specific cameras on pbase and compare the EXIF data you can get more actual comparisons than with the limited shots in reviews. Just released models are harder to find comparisons for.

The flip side is that the smaller the sensor the smaller they can make the camera and lens system for the same general capabilities.

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Old Dec 7, 2004, 8:16 PM   #4
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Slipe is right about the size of the sesnor determines the size of the camera: handle one of the 4x5 inch (sensor size) press cameras sometime.

I'm not sure how seriously you should take image comparisons. What one manufacturer/model calls normal sharpness another might call normal sharpness. And then there is all the post processing. He is for sure right in saying that you should look at a *LOT* of images if you are going to decide on that basis.

Another issue with sensor size is cost. If the sensor is twice the linear size, it will use four times the material and have a much higher failure rate.
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