Lens Imaging Calculator
Solve thin-lens image distance, magnification, and orientation.
Lens Imaging Calculator applies the thin-lens equation to relate focal length, object distance, and image distance. Focal length is the distance from the lens to the focal point for parallel incoming light, object distance is the distance from the object to the lens, and image distance is where the image forms. Magnification compares image height with object height; its sign and size indicate whether the image is inverted or upright and enlarged or reduced. Real images can be projected onto a screen, while virtual images appear to come from a location where rays do not physically converge. The thin-lens model is useful for optics coursework and camera intuition, but thick lenses, aberrations, aperture, and sensor geometry can affect real optical systems.