The image will most likely be larger than needed when viewed on the screen, but scaling down a large photo will produce a cleaner overall image. However, the higher quality the image, the less images you can fit on the camera before downloading to a computer. For that reason, the ETT Center normally has the cameras set to medium resolution. Adjust to best fit your particular needs. Shoot in well lit areas or outdoors if possible.
Dark subjects suffer the most quality loss.
Compression artifacts are much more visible in the darker areas of an image, and these are difficult to fix. Take multiple pictures when possible. If you shoot 5 pictures of your subject you are much more likely to have a really good one than if you only shoot one. Have your subjects sign a Release Form. General Release forms available at the ETT Center.