Crop tool proportions don’t work

(2 posts)
  • dheasebro
    Member

    This may look pointless on the surface; it took a good deal of experience before I realized something was wrong, and more to figure out what.

    After rotating with Preserve straightened image, cropping (even immediately, before saving) with Constrain cropping proportion doesn't work properly. I think the program uses the overall outline of the rotated image (irrelevant) rather than the original image as its source for the proportion to constrain to. If the original was in 2 × 3 proportion, for example, that round ratio has been distorted by the rotation. Don't tell me to choose Crop straightened image in the rotate tool: it arbitrarily chooses where to crop, which I want to decide myself.

    To confirm my observation: Start with an image in your camera's standard proportions, such as 2 × 3. Arbitrarily rotate it 20 degrees with Crop straightened image selected. Save the rotated and cropped image under a separate name. The new file is in 2 × 3 proportions, but you had no control of the cropping. Now return to the original image and again rotate it 20 degrees, this time with Preserve straightened image, and then crop it with Constrain cropping proportion selected but without choosing a proportion (relying that the program uses 2 × 3), and save that separately. This time you have the advantage that you can decide which end of the image to discard by cropping, rather than let the program decide, but your second edit is not 2 × 3 (with 20 degrees of rotation, it looks closer to 4 × 5). Finally, repeat the last rotate and crop, but specifically choose 2 × 3 from the drop-down list. Now the proposed crop window is in the right proportions.

    My complaint is that there is probably no reason that my first example should not have used 2 × 3 proportions, instead of a coincidental, irrelevant value, and come out as I want it, instead of forcing me through extra steps.

    Posted On November 19, 2008 - 10:29 PM (1 year ago) (Permalink to this post)
  • Well spotted.

    I tested this out by rotating an image (without the auto-cropping option), and then tried cropping it. I found that the cropping aspect ratio changes depending on whether I select "Original" or "4x3", despite the original being 4x3. So "Original" isn't based on the proportions of the saved original (as one might have thought), but on the edited-to-date version.

    This is certainly something to be aware of. After a large rotation, like I used in my test, the difference is clear, but that wouldn't be the case with a small rotation and the difference might only be spotted until later.

    Posted On November 20, 2008 - 05:12 PM (1 year ago) (Permalink to this post)

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