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jack paradise

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  1. I've now found out that camera manufacturer also have a role in determining JPEG compression ratio.

     

    I borrowed a Kodak digicam last week and played with it for a while. Average file size of some 50 pictures of very different subjects was exactly 25% of camera resolution. That's way too much compression.

     

    The average file size for a Canon SD500 came out at 40% of resolution.

    So it varies. My hunch is that the higher the compression ratio for jpeg, the higher the handicap for printing larger 8x10's.

  2. Here's something I've been meaning to ask for a while. What determines

    differences in JPEG file sizes in a digital camera when no settings

    have changed?

     

    After shooting different scenes in jpeg format, and without changing

    any settings (like resolution or image quality setting) other than

    Time and Aperture values, files that I download from the camera have

    varying compression ratios.

     

    So what is lost, if anything, in the above example ? And what is the

    explanation for that variation ?

     

    PS: This question has nothing to do with quality settings in Photoshop

    when saving a file in jpeg. It's also not a jpeg vs tiff format question.

  3. Hi all,

     

    Thanks for all the camera suggestions. Reading the post I found two seemegly well known small rf camera that I didnt about the Hi-Matic and an Olympus RF.

     

    The 5,6 and 7 elements lens on those small rf, when used between f5.6 and f11, should compare favorably with their slr counterpart.

     

    I'm not done with film yet. Digital will just have to wait.

  4. Everett,

     

    You're right, the post is still there and can be seen at the following url.

     

    http://www.photo.net/bboard/q-and-a-fetch-msg?msg_id=00DVwZ

     

    And David, photos like these I can make any days with with modern photo gear. I just thought it'd be fun to do it with old rangefinders cameras, as some of them had exceptionnal lens.

     

    So, my question still stand. So what old rangefinders that you know of besides the one I listed in the original post, that had exceptional imaging quality ?

  5. Hi,

     

    This evening I saw a post containing pictures made with an Argus C33.

    The pictures were simply stunning. The post has been removed for some

    reason.

     

    So, my question is: what classic rangefinder do you know of that can

    produce wow pictures. (Please dont give me the "people take pictures,

    not cameras" thing)

     

    I'm looking for cameras others than the well knowns Leica, Minolta CL,

    Ricoh, Rollei. There must be some sleepers out there that might be fun

    to discover.

  6. Hi Craig,

     

    Thanks for the Vuescan .ini file. I've tried it on a few b&w negatives and if works great. I've got a few more negatives to try and if they work out i'll keep the file.

     

    Like you've said, "The image scans a little flat but is easily fixed in PS". I like that as it tends to preserve both highlight and shadows, as once data is lost at the scanner level, there's no way to get it back.

     

    Cheers.

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