The manual of the Canon TS-E 17mm F/4 states that metering only works when the lens tilt and shift are set to zero (in the same position as a standard lens would be). Logically this implies that the meter indicator in manual mode would be incorrect as well.

**What techniques then would be recommended to meter with such lens?** Does the light entering the lens depend on the shift and/or tilt positions? If you meter from a highlight the the lens and camera straight, would that be still valid after tilt, shift and the orientation adjusted? (Obviously for reflective surfaces the answer to the latter is no).