1. A camera system comprising: an image sensor to generate image data of a scene having one or more subjects; and a processor coupled to the image sensor to implement: a pose evaluator to (i) analyze the image data to determine a pose value for each of a plurality of pose metrics that corresponds to different pose-related characteristics for the one or more subjects in the scene, and (ii) combine the determined pose values for each of the plurality of pose metrics to generate a pose metric signal having a combined pose value, the combined pose value providing a variable measure of a pose quality for the one or more subjects in the scene; and a pose feedback indicator to provide a user-perceptible feedback demonstrating the combined pose value of the pose metric signal, the user-perceptible feedback representing the variable measure of the pose quality for the one or more subjects in the scene.