Prepare images for Projected Image Competitions
Projected Images
1024 pixels wide - 768 pixels high
Most digital projectors have a "native resolution" of 1024 wide by 768 high. They show 1024 dots of light across the screen and 768 dots of light down the screen. This is a ratio of 4 to 3. This is why competitions ask entrants to size their images to 1024 pixels wide by 768 pixels high, so that each dot represents one pixel.
Most of your images will have more pixels (for printing and making slides, the more pixels the better). For a projected image competition you must reduce the number of pixels to 1024 by 768. You must not have the width more than 1024 and you must not have the height more than 768 pixels. If for example you reduce the width to 1024 pixels, and the resulting height is 694 pixels, then you need to add some black pixels to the height to make it 768. In Photoshop, go to "canvas size" and make the height 768 pixels, background colour black. A band of black will be added to top and a band of black added to the bottom, to give the 768 pixels.
For images in "portrait" mode, with 768 pixels high, the width pixels will be less than 768. In this case, bands of black need to be added to left and right, to give a canvas width of 1024.
The bands of black, do not have to be black. They can be any colour or pattern, but black is usually the preferred colour.
To reduce the size of your image. Go to "Image". Go to "image size". tick the 3 boxes at the bottom (scale styles, constraint proportion, resample image). choose "pixels" from the drop-down menu.
The images below show examples of the black bands.
Most of your images will have more pixels (for printing and making slides, the more pixels the better). For a projected image competition you must reduce the number of pixels to 1024 by 768. You must not have the width more than 1024 and you must not have the height more than 768 pixels. If for example you reduce the width to 1024 pixels, and the resulting height is 694 pixels, then you need to add some black pixels to the height to make it 768. In Photoshop, go to "canvas size" and make the height 768 pixels, background colour black. A band of black will be added to top and a band of black added to the bottom, to give the 768 pixels.
For images in "portrait" mode, with 768 pixels high, the width pixels will be less than 768. In this case, bands of black need to be added to left and right, to give a canvas width of 1024.
The bands of black, do not have to be black. They can be any colour or pattern, but black is usually the preferred colour.
To reduce the size of your image. Go to "Image". Go to "image size". tick the 3 boxes at the bottom (scale styles, constraint proportion, resample image). choose "pixels" from the drop-down menu.
The images below show examples of the black bands.