Preparing a PDI for Competition

A few general reminders before you start:

  • All images must be submitted in JPEG format, must be 1600 pixels wide x 1200 pixels high and should be in sRGB colour space.
  • If the picture area is less than the overall image size, the surrounding area must be filled with colour – black is best.
  • Don’t forget to name your file correctly with the competition, your group, membership number and the image title eg OD2_B_025_my image title.jpg. Details on file naming are available on the Competition Rules page.
  • You can submit your image by uploading to the LSAPS web site, by email to or by copying to a CD/Memory stick to hand in on the due date. Upload to the LSAPS website is now the preferred method.

Whilst Photoshop & Elements are the standard editing software for resizing prints, you may also be able to adapt other software (such as Paintshop Pro) to do the same thing. However, the instructions provided below only refer to Photoshop & Elements.

  1.  Create a copy of your original image as re-sizing will reduce the quality and you may want to do more work on it in the future.
  2.  Open your image and using the menu at the top of the screen, go to ‘Image’ & then select ‘image size’ from the drop down menu.
  3.  A box will open on your screen. Ensure ‘constrain proportions’ is ticked.
  4.  For a landscape format image, change the width to 1600 pixels. The height should automatically change to 1200 pixels or less. Click OK.
  5.  For a portrait format image, follow steps 1 -3 above then change the height to 1200 pixels. The width should change to 1600 pixels or less. Click OK.
  6.  To complete the operation, you now need to change the canvas size. Go to ‘Image’ again but this time select ‘canvas size’ from the drop down menu.
  7.  Set the ‘canvas extension colour’ (ie the background colour) to black.
  8.  Set the size to 1600 pixels wide and 1200 pixels high. Click OK.

You should now have a 1600×1200 pixel image with a black border if the image does not fill the frame. Remember that the final image should be the same shape and proportions as an old 4:3 TV – ie it should be wider than it is high.

If you are not using sRGB colour space as default, convert the image to sRGB by selecting Edit–>Convert To Profile and select the Destination Space as sRGB.

Save your image as a jpg/jpeg file specifying a compression level of between 10 and 12.  The image should be about 1 to 2MB in size.  Anything smaller means the image quality is being degraded.