Preparing images for projected image competitions

GENERAL

  1. Only paid-up members of the Society are allowed to enter the monthly competitions.
  2. Entries must be supplied to the Competition Secretary one week prior to the Digital Images competition.
  3. If not submitted at the previous week's meeting, special arrangements for delivery of images may be considered, but entirely at the discretion of the Competition Secretary.
  4. Entries may only be submitted on USB memory stick or CD. CD's that are still 'open' or CDRW (rewritable CD’s) may not be readable on the club’s computer.
  5. Please ensure that there are no other images or programs (especially “auto run” programs) on the USB stick or CD. If possible the images should be saved within a folder such as: “Proj Image Comp no1 29Oct07”.
  6. You must write your name on the USB stick or CD if you want it returned to you the following week.
  7. Images that do not conform to the Naming and Sizing specifications detailed below will not be eligible for entry to the EHHPS Monthly Projected Images Competitions.

FILE PREPARATION

  1. Images must be sized exactly for the projector’s native resolution of 1400 x 1050 pixels (width / height). See below for instructions on image sizing.
  2. Images should be saved in JPEG (*.JPG) format, non-interlaced.

FILE NAMING

  1. Each image file must be named in a standard way, as follows:
    1. - first letter denotes the class, i.e. 'O' (= Open) or 'S' (= Set Subject)
    2. - picture title e.g. 'PrettyPicture'
    3. - your name e.g. 'JoeBloggs'
    4. each separated by an underscore character _
    5. A typical file might be Saved As: O_PrettyPicture_JoeBloggs.jpg or S_MyPicture_MaryW.jpg
  2. The complete file name must not exceed 128 characters and must contain only alphabetical letters a-z and numbers from 0 to 9. Do not use characters such as *, ?, !, &, /, \, |, “˜, ', or .,

  3. On the same USB stick or CD, please provide a plain text (*.txt) file named <date reversed><surname>.txt containing a list of the image files submitted, and the title of each image, the classes entered for each image, and your own contact details in case of a query. On a PC you can best write this file in “Notepad” and “save as text documents .txt”.

IMAGE SIZING

For consistent and optimum display on the projector, images must be sized for the projector’s native resolution of 1400 x 1050 pixels. Most people’s original images will differ from this size & resolution, and therefore a suitable black background canvas must be added.

In Photoshop this is done as follows:
LANDSCAPE oriented” IMAGES (where the horizontal image size exceeds the vertical size):

  1. File > Open (to load image) > Image > Image Size. The dialogue box displays the current image size in pixels. Ensure that the “Constrain Proportions” and “Resample Image” boxes are both checked.
  2. Choose “pixels” as the measurement and type 1400 in the Width box. As the image is unlikely to be in the projector’s 1400x1050 proportion, the Height measurement will change (and will not be 1050). Do NOT change the new height figure. Do NOT alter any document sizes.
  3. Go to Image > Canvas size and change the Width dimensions from inches to pixels. If the image has been correctly sized in the previous step, Width will already be 1400 (and Height some other number)
  4. Change the Height value in pixels to 1050 (leaving 1400 pixels in the Width box).
  5. Ensure that the Relative box is NOT ticked, and then set Canvas extension colour to black.
  6. Click OK and the image should now have a horizontal black background above and below the picture.
  7. Go to File > Save As and select “JPEG”, non-interlaced format. Select the Folder or Drive to save it to.
  8. Type in the filename in accordance with the file naming convention above.

PORTRAIT oriented” and “SQUARE” IMAGES (where the vertical image size exceeds or equals the horizontal size):

  1. File > Open (to load image) > Image > Image Size. The dialogue box displays the current image size in pixels. Ensure that the “Constrain Proportions” and “Resample Image” boxes are both checked.
  2. Chose “pixels” as the measurement and type 1050 in the Height box. As the image is unlikely to be in the projector’s 1400x1050 proportion, the Width measurement will change (and will not be 1400).
  3. Go to Image > Canvas size and change the Height dimensions from inches to pixels. If the image has been correctly sized in the previous step, Height will already be 1050 (and Width some other number).
  4. Change the Width value in pixels to 1400 (leaving 1050 in the Height Box).
  5. Ensure that the Relative box is NOT ticked, and then set Canvas extension colour to black.
  6. Click OK and the image should now have black vertical borders to the left and right of the picture.
  7. Go to File > Save As and select “JPEG”, non-interlaced format. Select the Folder or Drive to save it to. Type in the filename in accordance with the file naming convention above.

SIMPLIFYING YOUR WORKFLOW

  1. Because the procedures for “Landscape” and “Portrait” images are slightly different, it is a good idea to divide the images that you have selected for re-sizing into separate Portrait and Landscape folders prior to doing re-sizing.
  2. Once you are confident with the two image sizing procedures above, each can be recorded as a “Landscape” and a “Portrait” Photoshop Action which will automatically perform the re-sizing in a few seconds.
  3. If you wish to re-size several images at once, the Actions can be run in Batch Mode as follows:
    1. File > Automate > Batch, then selection either the “Landscape” or “Portrait” Action accordingly.
    2. Select the “Landscape” Source Folder where you have stored the “Landscape” Images for resizing and run the “Landscape” Action. Select a Destination folder (can be the same as long as the images are being saved in .JPG format) and click OK.
    3. Select the “Portrait” Source Folder where you have stored the “Portrait” Images for resizing and run the “Portrait” Action. Select a Destination folder (can be the same as long as the images are being saved in .JPG format) and click OK.
    4. Copy the re-sized .JPG files into a suitably named folder on the USB stick or CD that you are submitting for the competition.Preparing images for projected image competitions