A terminal, comprising: an illumination subsystem for projecting an illumination pattern; and an image sensor array for capturing an image of a target; wherein the terminal has ( i) a first illumination and exposure control configuration having a first associated illumination control and a first associated exposure control and ( ii) a second illumination and exposure control configuration having a second associated illumination control and a second associated exposure control; wherein, with the first illumination control active, an average energization level of the illumination subsystem during exposure periods of one or more frames is higher than with the second illumination control active; wherein, with the first exposure control active, an average exposure period of the image sensor array is shorter than with the second exposure control active; and wherein the terminal is operative to: activate the first illumination and exposure control configuration for capturing a first set of frames comprising one or more successive frames; activate the second illumination and exposure control configuration for capturing a second set of frames comprising one or more successive frames; attempt to decode decodable indicia utilizing a frame of the first set of frames; attempt to decode decodable indicia utilizing a frame of the second set of frames; and switch between activation of the first illumination and exposure control configuration and the second illumination and exposure control configuration on a closed loop basis responsively to a sensed condition, characterized by the sensed condition being selected from: an ambient light level; a measurement of motion of the terminal; and a terminal range. an illumination subsystem for projecting an illumination pattern; and an image sensor array for capturing an image of a target; wherein the terminal has ( i) a first illumination and exposure control configuration having a first associated illumination control and a first associated exposure control and ( ii) a second illumination and exposure control configuration having a second associated illumination control and a second associated exposure control; wherein, with the first illumination control active, an average energization level of the illumination subsystem during exposure periods of one or more frames is higher than with the second illumination control active; wherein, with the first exposure control active, an average exposure period of the image sensor array is shorter than with the second exposure control active; and wherein the terminal is operative to: activate the first illumination and exposure control configuration for capturing a first set of frames comprising one or more successive frames; activate the second illumination and exposure control configuration for capturing a second set of frames comprising one or more successive frames; attempt to decode decodable indicia utilizing a frame of the first set of frames; attempt to decode decodable indicia utilizing a frame of the second set of frames; and switch between activation of the first illumination and exposure control configuration and the second illumination and exposure control configuration on a closed loop basis responsively to a sensed condition, characterized by the sensed condition being selected from: an ambient light level; a measurement of motion of the terminal; and a terminal range. activate the first illumination and exposure control configuration for capturing a first set of frames comprising one or more successive frames; activate the second illumination and exposure control configuration for capturing a second set of frames comprising one or more successive frames; attempt to decode decodable indicia utilizing a frame of the first set of frames; attempt to decode decodable indicia utilizing a frame of the second set of frames; and switch between activation of the first illumination and exposure control configuration and the second illumination and exposure control configuration on a closed loop basis responsively to a sensed condition, characterized by the sensed condition being selected from: an ambient light level; a measurement of motion of the terminal; and a terminal range. an ambient light level; a measurement of motion of the terminal; and a terminal range.