When an automatic pop-up is selected in an imaging apparatus, during startup, a light emission unit is moved to a pop-up position by a spring force in operably conjugate with a lens barrel together with the retraction of a cam follower. The transmitter comprises at least two optoelectronic signal sources for projecting at least two spots independent from each other on a target, the means comprising a digitally controlled potentiometer for balancing the output signals and a digital processor adapted for controlling the potentiometer. The sidewall spacer includes a high dielectric constant material and covers the sidewalls of at least the second and third layers of the gate stack. 14\u2019 can be blue or red depending on the acidity of the soil and the presence of aluminum. The real-time incident and response information includes the location of the calling device, and one or more of incident specific information, person specific information, and vehicle specific information.