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Sizing images for projection    
   
Your image can be smaller but CAN NOT exceed these dimensions in either direction:    
                  
1024 pixels wide     768 pixels tall  

Why:   
Images for projectors should match the pixel dimensions of the projector. As with computer monitors, projectors also have their own display dimensions.
For example, most 4:3 aspect projectors have a display of 1024 x 768 pixels, so an image that is 1024pixels wide by 768 pixels tall with a 72 PPI resolution would be an ideal image size to be displayed from a projector.  Whatever your image proportions, Landscape, Portrait or Widescreen etc., your image should be resized to fit ‘through the projector’s window’. 


If your image is in landscape orientation  -  the longest side is the horizontal dimension and therefore should be set to match the projectors horizontal  dimension of  1024 pixels.

If your image is in portrait orientation  -  the longest side is the height and should therefore be adjusted to match the projectors vertical dimension of 768 pixels. If you have a square image  -  it must still be made to ‘fit through the projectors window’.  The smallest dimension of this ‘window’ is the vertical of 768 pixels, so your image should be resized to  768 x 768 pixels.
 How:  
There are many software packages for editing images but they all have very similar resizing options which are usually found under the menu item   Image, then Resize.   Once selected this should bring up a dialog window with a variety of selections and check boxes.  If any of the following are present ensure that they are set or ticked as follows:
Pixel Dimension:   this is where you set dimensions as explained above.

Constrain Proportions : ticked
Resample Image:  ticked and select Bicubic

Scale Styles:  ticked

Resolution: this will display the current resolution of your image and is not relevant to image projection and can therefore be left unchanged.   However, it should not be less than 72 PPI
Colour Profile:  check that your image has the best colour profile for projection by going to the menu item:
     IMAGE, then CONVERT TO PROFILE and select
sRGB in the dialog box.


Your image should then be saved as  JPEG                                                                                                                                          Geoff Mason,  Jan 2016

               
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  • Home
  • About Us
    • Trinity Photography Group
    • Committee Members etc
  • Programme of Events
  • Competitions
    • Magic Lantern
    • Competition Rules
    • Preparing files for Printing through Simlab
    • Preparation for PDI Entries
    • Best of the Best 2021-2022
    • Print Season - 2022-2023 >
      • Print Merit 1 - 12th December 2022
    • PDI Season 2022-2023 >
      • PDI Merit 2- 28th Nov 2022
  • How To Find Us
  • Contact
  • Season 2021-2022 Print & Digital Merit Awards