Imager is for anyone working with cameras and optics.
Camera Engineers: Simulate and understand the interaction between the various components of an imaging system.
Robotics and Automation: Test how you will perceive the world before incurring expense building a camera system. Validate your needs for field of view, depth of field, resolution, etc. so that you purchase the right camera components the first time.
Computer Vision, Algorithm Developers: Understand how your image processing algorithms function on an image with real-world imperfections due to changing light conditions, lens aberrations, and object motion.
Educators and Students: Develop an intuition for the mathematics describing camera performance by visually understanding the interplay of system component properties on camera performance, or examine in detail the specific effects of one component (e.g. lens focal length, pixel size, sensor sensitivity).
Product Marketing and Management: Translate your visual performance requirements for a camera system into numbers and component configurations that an engineer can use to develop a system.