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CVHManchester
Inspiring
November 3, 2016
Question

Rotate 48 bit TIFF files*

  • November 3, 2016
  • 1 reply
  • 4489 views

I am scanning a collection of ca 1500 prints using TIFF at 48 bit depth, each file being ca 819 MB. The scanner imports the the images as portrait, but most need to be rotated to landscape.

When trying to rotate these images using Organiser, this gives an error and says that the images will be reduced to 8 bit.

I am using Adobe Photoshop Elements Version: 14.1 (20151206.m.83730)  x64, Operating System: Windows 10 64-bit, 10 GB free memory.

Can I do a simple rotate in Photoshop without any modification of the internal content. just a transformation of the pixel coordinates?

Thank you

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    1 reply

    Jeff Arola
    Community Expert
    Jeff ArolaCommunity Expert
    Community Expert
    November 3, 2016

    It seems silly to me that the organizer insists on converting the perfectly good 16 bits/channel (48 bit) tifs to 8 bits/channel just to rotate an image 90 degrees left or right, but unfortunately that's the way it is.

    Anyway, you can open the tifs in the pse 14 editor and rotate them by going to Image>Rotate>90° right or 90° left, then File>Save and overwright the existing tiff file.

    C
    CVHManchesterAuthor
    Inspiring
    November 3, 2016

    Thank you for the prompt confirmation of what I did not want to hear.

    When I tried your method using process multiple files, it opens each file taking about 90 seconds each.  I started with a sample directory of 20 of my files and gave up waiting.  I did not get as far as rotating, then saving them.

    Do you know of any image manipulation software that can do what I need in an economical manner?

    Jeff Arola
    Community Expert
    Jeff ArolaCommunity Expert
    Community Expert
    November 3, 2016

    Rather that using photoshop elements at all, you could just use windows explorer.

    In windows explorer select the scans you want to rotate then right click on one of the scans and select either Rotate Right or Left.

    Then in the Organizer you can select the scans and go to Update Thumbnail for Selected Items to reflect the rotation if the organizer hasn't already done that.

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