8As the flange focal distance varies from camera type to camera type, it is necessaryto adjust the CP.2 lens to the camera used when changing the mount or cameramodel (=shimming). In order to perform this adjustment, Carl Zeiss provides shims indifferent thicknesses that are color coded.When the mount has been unscrewed, these shims can be placed in a groove in thelens barrel. Any possible combination of shims can be used to achieve the requiredthickness and therefore the required flange focal distance. The lens already containsshims when delivered.ȴ Carl Zeiss recommends that the camera is set to the usual standard settings(cf. works settings). You can obtain further details from the instruction manualof the camera you use.ProcedureIn the following chapter we explain how to adjust your Compact Prime CP.2 to aDSLR camera.1. Fasten the Carl Zeiss test chart on a wall at the appropriate test distance(see tables on page 12 – 16; the test distance is depending on the focal length)and ensure that the illumination is bright and uniform.2. Mount the camera and lens on a tripod and level the camera, making sure thatthe centre of the image is aligned with the centre of the Siemens star.D | Adjusting the lensto your camera