3B | OverviewGeneral instructions• The use of a T6 torque wrench with a torque of 0.4 Nm is strongly recommended. Thiswrench can be purchased from Carl Zeiss (see appendix, page 17).• Ensure that the environment is clean and free from dust so that no dust particles canenter the lens during the following procedure.• Smudges and fingerprints on the lens surface can be gently removed with a softbrush and then with a dry and clean cotton cloth. The ZEISS lens cleaning kit will givesuperior results and is highly recommended for this purpose.• When matching the lens, ensure that the colored shims lie on top of each other in thegroove of the lens barrel and do not cover the screw holes.• Please handle the shims carefully as they can easily kink or tear which makes themunusable.General drawingLensGroove of thelens barrel Torx screw(s)Black EF adapterring with attachedsilver supportbracketSilver EF mountincluding threadedblack inner ringShim