Custom camera effects

It is possible to create custom camera effects by using point_camera or by adding a new HUD element.

Point Camera

Custom camera effects are easily produceable with point_camera.

Broken lens effect

Take the invisible texture and make a block in front of the point_camera. Then using the decal tool, take the texture decals/glass/shot1 and place it right in front of the point_camera entity. Through the monitor it will now look like the image was shot through the broken lens.

HUD Modification

Another possible solution would be to add a new HUD element which fits the whole screen. The Basic Hud Modification tutorial explains how to perform a similar addition.