Whats the difference between TIFF and other qualities

Discussion in 'Digital Photography' started by jsf8x, Dec 20, 2010.

  1. jsf8x macrumors 6502

    jsf8x

    Joined:
    Feb 28, 2010
    #1
    because with the normal quality set on my Lumix DMC-FZ30, a single picture is 1-2 mb. With TIFF set as the quality, the picture was 16mb! Whats the difference?
     
  2. simsaladimbamba, Dec 20, 2010
    Last edited: Dec 20, 2010

    simsaladimbamba

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    #3
  3. Blue Velvet Moderator emeritus

    Joined:
    Jul 4, 2004
    #4
    Normal quality is probably a compressed, possibly a lower-res JPG... JPGs are compressed in a lossy fashion, throwing away data according to an algorithm. TIFFs, assuming they're not compressed with LZW compression which is lossless, contains all the data in the image.

    Take a picture of the same scene with both settings, then take a close look at them at 400% on a display. The TIFF should look considerably better.

    Incidentally, until InDesign came along with its native Photoshop file handling, the TIFF was, and still mostly is, the preferred file format for rasterised images used in the production of print-ready artwork.

    Incorrect.
     
  4. simsaladimbamba

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    #5
    In what way?

    I used this graphic to extrapolate:
    [​IMG]
    from http://photo.net/learn/raw/

    Does that mean JPEGs can store more than 8 bit per channel or that TIFFs aren't 16 bit per channel or ...?
     
  5. OreoCookie macrumors 68030

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    Apr 14, 2001
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    Sendai, Japan
    #6
    It means that jpgs can only store 8 bit per color channel while tiffs can store either 8 or 16 bit per channel.
     
  6. Blue Velvet Moderator emeritus

    Joined:
    Jul 4, 2004
    #7

    No. TIFFs aren't automatically 16 bit, although they can be... most are usually 8 bit and I'd bet the TIFFs that come out of the OPs camera are just your plain old vanilla 8 bit kind. So what I'm saying is that TIFFs are not automatically 16 bit.

    16 bit TIFFs are comparatively rare outside photography, by the way. Might work on an image in 16 bit to minimise any posterisation in Photoshop, but will always convert to 8 bit after my CMYK conversion.
     
  7. simsaladimbamba

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    #8
    Thanks. Ignorance is certainly not bliss.
     

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