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5 Megapixel VS. 4 Megapixel camera
Hello,
I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. We both set our cameras to the highest resolution. When I take pictures, the size of the resulting jpeg file is approximate 2 meg, give or take 100K (on average). When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Does anyone know why it is like this considering the different megapixel specification for each camera? I would have thought that the 5 meg camera would have larger jpegs. Thanks for your help. Regards, Mark |
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#3
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The answer is Compression.
Roy G "Mark" wrote in message om... Hello, I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. We both set our cameras to the highest resolution. When I take pictures, the size of the resulting jpeg file is approximate 2 meg, give or take 100K (on average). When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Does anyone know why it is like this considering the different megapixel specification for each camera? I would have thought that the 5 meg camera would have larger jpegs. Thanks for your help. Regards, Mark |
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I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My
buddy owns an Olympia 4.0 Megapixel camera. [...] When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Different file compression settings. Thats about it. Comparing one brand to another is tough. But important. If the files are smaller, they contain less information. (I'm still looking for a camera that offers lossless TIFF compression.) -Joel ---------------------------------------------------------------------------- Please feed the 35mm lens/digicam databases: http://www.exc.com/photography ---------------------------------------------------------------------------- |
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#7
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On Tue, 08 Mar 2005 11:52:20 GMT, "Roy"
wrote: The answer is Compression. Roy G And possibly subject matter. If you take pictures with a lot of open sky and your buddy takes pictures of dense intertwining forest features the sky will be easier to compress out. Mark" wrote in message . com... Hello, I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. We both set our cameras to the highest resolution. When I take pictures, the size of the resulting jpeg file is approximate 2 meg, give or take 100K (on average). When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Does anyone know why it is like this considering the different megapixel specification for each camera? I would have thought that the 5 meg camera would have larger jpegs. Thanks for your help. Regards, Mark |
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Mark wrote:
Hello, I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. We both set our cameras to the highest resolution. When I take pictures, the size of the resulting jpeg file is approximate 2 meg, give or take 100K (on average). When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Does anyone know why it is like this considering the different megapixel specification for each camera? I would have thought that the 5 meg camera would have larger jpegs. Thanks for your help. Regards, Mark The difference is in the compression factor implemented by the particular camera firmware. There is a 'happy medium' between a larger file, and better quality. Some manufacturers go for the smaller files, and others for the lower compression ratio. -- Ron Hunter |
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Dr. Joel M. Hoffman wrote:
I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. [...] When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Different file compression settings. Thats about it. Comparing one brand to another is tough. But important. If the files are smaller, they contain less information. (I'm still looking for a camera that offers lossless TIFF compression.) -Joel ---------------------------------------------------------------------------- Please feed the 35mm lens/digicam databases: http://www.exc.com/photography ---------------------------------------------------------------------------- There are a number of such cameras, but they demand a premium price, and require several times more flash card space for each picture. -- Ron Hunter |
#10
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In article , says...
I own a Sony Cybershot 5.0 Megapixel camera (cybershot DSC-P10). My buddy owns an Olympia 4.0 Megapixel camera. [...] When my buddy takes pictures, the size of the resulting jpeg files is larger - closer to 2.5 Meg. Different file compression settings. Thats about it. Comparing one brand to another is tough. But important. If the files are smaller, they contain less information. (I'm still looking for a camera that offers lossless TIFF compression.) -Joel ---------------------------------------------------------------------------- Please feed the 35mm lens/digicam databases: http://www.exc.com/photography ---------------------------------------------------------------------------- Unless you are into VERY long waiting times you dont want what you think you want. Of the several cameras I have that save .tif files, the wat can be as long as a minute for a 5mp photo. Even the wait for a raw file is shorter. There MAY be some cameras around that save .tif as fast as lightning, but if there is, I have yet to see it. -- Larry Lynch Mystic, Ct. |
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