Another diptych of dragonflies

The following composite image, known as a diptych, was created using Diptic app for Apple iOS mobile devices. The diptych shows Great Blue Skimmer dragonflies (Libellula vibrans) spotted during photowalks through Huntley Meadows Park, Fairfax County, Virginia USA.


In order to create a “Hi-Res” Diptic (resolution = 2048 x 2048 pixels) like the one shown above, I used Apple Aperture to crop photo tiles from the source images in the following sizes: 1024 x 1024 pixels (square); 1024 H x 2048 W pixels. Next, I used iTunes to sync the photo tiles to my iPad. Finally, I launched Diptic, selected the photo tiles, and added black and white borders with a width of 10 pixels.

The following workflow was used to crop the photo tiles in Aperture:

  1. Choose a photo to edit. From the menu bar, select Photos/Duplicate Version.
  2. Select the new version of the photo.
  3. Select “Crop Tool” and drag a selection area on the image — don’t worry about the size of the area. Note that the “Master Aspect Ratio” of the Master Version is shown in the Crop Tool HUD; do not change the aspect ratio. (Under unusual circumstances, you may need to select “Do Not Constrain.”)
  4. Under the “Adjustments” tab, select “Crop.”
  5. Enter values for the new height and width, in pixels.
  6. Click-and-drag the crop selection box to desired position.
  7. From the menu bar, select File/Export/Version…; save file to desired location.

Photo © Copyright 2011 Walter Sanford. All rights reserved.

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