1. An imaging apparatus, comprising: a time-of-flight (TOF) system comprising: an emitter configured to emit a light signal, and a sensing system configured to sense a reflection of the emitted light signal off of a target object, the TOF system configured to determine a return energy based on the reflection of the emitted light signal; a clock coupled to the TOF system, the clock configured to measure a time between when the light signal is emitted and when the emitted light signal is sensed by the sensing system; and a processor in communication with the TOF system and the clock, the processor configured to: determine a distance between the target object and the TOF system based on the measured time, identify a reflectance of the target object based on the return energy of the emitted light signal, and determine an exposure level based on the distance to the target object and the reflectance of the target object.