RAW - File Size Changes when Saved as .psd

Discussion in 'Digital SLR' started by AlanW, Feb 19, 2006.

  1. AlanW

    AlanW Guest

    My thanks to all who responded to my post regarding RAW + Jpeg. I
    downloaded the extractor and I am very pleased with the ability to
    make adjustments using the PSE3 Plug-in. I have the zeal of the
    convert and will now shoot only RAW with my beloved D70s.

    I notice that when I save the .nef file in the .psd format, the size
    triples (i.e., the original .nef = 5200kb; the .psd = 17,000 kb).

    Is this normal and can anyone explain why this happens?

    Thanks,
    Alan
     
    AlanW, Feb 19, 2006
    #1
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  2. AlanW

    Jeremy Nixon Guest

    After conversion, the file has three color channels instead of one.

    The PSD will get even larger if you use layers, and then Photoshop may
    even add a preview to the file, making it larger still. It's all normal.
     
    Jeremy Nixon, Feb 19, 2006
    #2
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  3. Yes it's normal. In fact this tells me you have only 8-bit data, which you
    really don't want to do at this stage. In the raw converter pane look at
    the lower left hand corner and you'll see a pull down menu for bit depth.
    You really want 16 bits at this point. When you save this you'll then see
    this is approximately now twice as large as before. Remember psd supports
    much more things, especially layers.
     
    Ed Ruf (REPLY to E-MAIL IN SIG!), Feb 19, 2006
    #3
  4. If you are just starting to work with raw get this book. It will get
    you started off right.

    Real World Camera Raw with Adobe Photoshop CS2 (Paperback)
    by Bruce Fraser

    http://www.amazon.com/gp/product/0321334094/103-7925841-5235052?v=glance&n=283155


    **********************************************************

    "A combat photographer should be able to make you see the
    color of blood in black and white"


    David Douglas Duncan
    Speaking on why in Vietnam
    he worked only in black and white
    http://www.hrc.utexas.edu/exhibitions/online/ddd/
     
    John A. Stovall, Feb 19, 2006
    #4
  5. AlanW

    AlanW Guest

    Thanks to all for your encouragement and suggestions. I will buy the
    book.

    Thanks,
    Alan
     
    AlanW, Feb 20, 2006
    #5
  6. AlanW

    C J Southern Guest

    Try to get the special that includes a free box of Asprins!
     
    C J Southern, Feb 20, 2006
    #6
  7. AlanW

    Matt Clara Guest

    I used to think so, too, but with Phase One RAW converter, I rarely need to
    make any further adjustments, so 8 bits is good to go.
     
    Matt Clara, Feb 20, 2006
    #7

  8. No, you want that for his book on color management.


    **********************************************************

    "A combat photographer should be able to make you see the
    color of blood in black and white"


    David Douglas Duncan
    Speaking on why in Vietnam
    he worked only in black and white
    http://www.hrc.utexas.edu/exhibitions/online/ddd/
     
    John A. Stovall, Feb 20, 2006
    #8
  9. AlanW

    JPS Guest

    In message <ZkkKf.151077$>,
    If you're outputting the final product, 8-bit can't really be bettered
    in any practical way.
    --
     
    JPS, Feb 20, 2006
    #9
  10. AlanW

    C J Southern Guest

    Been there - done that too. Bottle of scotch numbs the pain nicely - only
    problem is I now have to read the book again!
     
    C J Southern, Feb 20, 2006
    #10
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