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[Question] Compressing JPEG

Discussion in 'BBS Hangout' started by Supermac34, Jun 27, 2004.

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  1. Supermac34

    Supermac34 President, Von Wafer Fan Club

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    Hey guys. I have a really great 5.1 megapixel camera that takes some really sharp photos. The only problem is that when I transfer them from my camera to my computer, the jpeg it produces is often 2-3 MB at high picture quality levels.

    Is there anyways to compress this image into a smaller file to view? I'm not talking about zipping it for sending it through email.

    When you go to an internet site with pics, they aren't 2-3 MB...they are usually 200 KB or so for high quality photos.

    Is it my camera that makes such huge files, or is there a way to convert or compress the images to a more usable file size?
     
  2. FrancisFan

    FrancisFan Member

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    On the web your monitor views an image according to the amount of pixels. A 5.1 megapixel camera means the output has 5 million pixels when a 1024 * 768 display has under a million so you have 5-6 displays worth of image. Consider a 1 megapixel photo is larger than the typical display size.

    You're probably going to want to change image size to a smaller image (amount of pixels) and then compress it as a jpeg image. But once you reduce the size you can't go back at the same quality, so if you want a high qualty copy of the image be sure not to back the image up before reducing size.
     
  3. FrancisFan

    FrancisFan Member

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    My bad..be sure to backup the origional image.
     
  4. Jeff

    Jeff Clutch Crew

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    The easiest way is to use some photo editing software and do a save as with the file to reduce the size. In Photoshop, for example, there is a Save For Web... option that dramatically reduces the size and allows you to even control the amount of compression.
     
  5. SmeggySmeg

    SmeggySmeg Member

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    jeff is spot on, great option in Photoshop
     
  6. Dr of Dunk

    Dr of Dunk Clutch Crew

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    If you're using Winblowz, go to www.download.com or www.tucows.com and download some image editing software. There's one named IrfanView that can convert your pics to smaller JPG's if you want... and I think it's still free.
     
  7. FrancisFan

    FrancisFan Member

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    ...That is if you want to pay $600 for Photoshop. I want to buy Photoshop CS, but that's a lot of money. So now I'm using Photoshop 5.0 LE which has limited funcionability, but is still pretty awesome.

    In most decent photo editors you should:
    - reduce image size, for a web reason (email, personal homepage), I don't see why any thing bigger than 600 pixels wide is needed for simple viewing reasons.

    - when you save as jpeg find the options/preferences and reduce the quality. In jpeg the quality is represented by a percentage (100% being the best). I usually like about 80% image quality, b/c the image is pretty sharp and not quite as big as 100%.
     
  8. SmeggySmeg

    SmeggySmeg Member

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    as a free option then go ifranview.. nice little free program
     
  9. FrancisFan

    FrancisFan Member

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    .. or you can try Gimp
     
  10. Supermac34

    Supermac34 President, Von Wafer Fan Club

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    Cool, thanks guys.

    I'd like a smaller image for most of my pics just to have on my computer.

    I only want to keep the larger images for printing purposes.
     
  11. Dr of Dunk

    Dr of Dunk Clutch Crew

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    Then IrfanView should work. It can batch convert a folder full of pics and either overwrite the originals or save the originals and create new versions of the files.
     

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