I thought of selling a way some extra chart/target etc, but I receive far more question than any thing. I give some technical tips here:

for camera/lens test:

1- Make certain that all lens covers the same size area
2- test target lighted evenly
3- use a tripod

film or digital you should be able to check your image with 10-20x lupe for aberrations, resolution/distortion and colour fringe.

for scanner test

1- scanner should be switched on for 15 minutes
2- scan with your usual setting

inspect your image in any image editing program, you will find out the true optical resolution, luminance balance, gray balance.