Preparing an Image for Digital Projection
Most photographic clubs now offer sound advice to members about preparing images for viewing with digital projectors. However, I still occasionally stumble across advice that is incomplete, misleading, or even wrong. Also, people often just follow a set of instructions without really understanding what they are doing, or why. I would like to address some of these issues here.
There are a few distinct steps needed when preparing an image for viewing with a digital projector. Images which will be viewed on a website need to be set up similarly to get the best results. The process may be summarised as follows.
- Carry out any photographic manipulation or processing with your chosen software until you are happy with how the image looks on your computer screen.
- Resize to the correct pixel dimensions.
- Set colour space to sRGB.
- Save as a jpeg image, being sure you do not overwrite the full-size image in the process.
Each of these steps needs further explanation. Please click on any step above to read more about it in a new window or tab. As there are many photo processing programs available and I cannot possibly cover all of them here, I shall use Adobe Photoshop terminology. This should translate easily enough to other programs as the prinicples are the same in all.