Question about Adobe Lightroom 2.

Discussion in 'Photography Beginners' Forum' started by colbyjames, Feb 23, 2010.

  1. colbyjames

    colbyjames TPF Noob!

    Joined:
    Feb 10, 2010
    Messages:
    6
    Likes Received:
    0
    Location:
    Southern Oregon
    Can others edit my Photos:
    Photos NOT OK to edit
    I'm new to the program and I'm curious about the catalog back-up that it frequently asks me to perform. When I back-up my catalog to my external drive, it appears as a single icon for a file of about 97Mb. My actual catalog has something near 10,000 photos and is about 30Gb in size. Is the program compressing my files to keep them backed up somewhere, or is it only saving thumbnails of each image, or...? :confused: Help! Thanks!!
     
  2. Big Mike

    Big Mike I am Big, I am Mike Staff Member Supporting Member

    Joined:
    Dec 16, 2003
    Messages:
    33,822
    Likes Received:
    1,811
    Location:
    Edmonton
    Can others edit my Photos:
    Photos NOT OK to edit
    Your image files are not actually stored up in the catalog. The Catalog contains previews of the images, and any edits that you have made to them inside LR.

    Lightroom doesn't work like most programs that we are used to using. Whether it's a word processor or an image editor, we are used to opening a file, making changes and then saving the file again...either overwriting the original file/template or saving a new copy.
    Lightroom doesn't work like that. It's really only a database. When you 'import' your images, it registers the location of the image file and create a preview image to work from. Anything you do to the image in LR, is saved as it's own little file and the original image is not touched. This is often called 'non-destructive' editing.

    When you print or 'output' your images from LR, that is when it uses the original files, applies the changes and creates the output files.

    So yes, the catalog is much smaller than all the images in it, which makes it easy to back up. However, you should still back up your images separately.
     
  3. colbyjames

    colbyjames TPF Noob!

    Joined:
    Feb 10, 2010
    Messages:
    6
    Likes Received:
    0
    Location:
    Southern Oregon
    Can others edit my Photos:
    Photos NOT OK to edit
    Cool. That's kind of what I suspected, just wanted to make sure! Thanks!!
     

Share This Page