If zooming out produces vignetting which obscures full-frame/full-gate view, pull the camera out, square up frame, pull camera back in. It's fun to do this anyway, gives you a feel for what's going on just outside of frame; the farther away all that vignetting is, the better.MovieStuff wrote:
The two things that can wreck an aeriel image is the pin cushion and barrel distortion, which is controlled by the projection lens, and the distance of the camera to the condenser lens. Generally speaking, the mistake first time users make is trying to control focus of the image by adjusting the projector lens. Focusing should always be achieved using the camera lens. The projector lens is only used to change the size/shape of the image slightly to make sure that you don't have bowed elements within the image, like curved frame lines, etc. The ability to focus edge to edge is inextricably linked to whether the frame lines are straight, so it is a good indicator. You adjust the lens on the projector until the image is square
Golden.MovieStuff wrote:and, if doing so makes the image go out of focus, then reach over to the camera to reclaim focus. Look at the image and repeat the process until you have it sharp edge to edge. Having the camera too close or too far will make it impossible to achieve this correctly, so distance is important, as well.
Roger
Mitch