Lghtmtr is an incredibly simple light meter app designed for iPhone users. It allows photographers to measure the amount of available light and determine the proper exposure for their photos. Developed by Alexander Jacque, this app is a great learning tool for students and newcomers to film photography who want to understand the interconnections between exposure, aperture, and ISO.

With Lghtmtr, users can easily take a reading of a scene and view the initial exposure settings. The app provides a visual representation of how adjusting one value affects the others, allowing users to better understand the relationship between exposure, aperture, and ISO. Users can also lock a value to prevent it from changing while adjusting the others.

One of the standout features of Lghtmtr is the ability to review the image on which the exposure settings are based. This allows users to analyze the results and make adjustments accordingly. Overall, Lghtmtr is a simple yet effective tool for photographers looking to improve their understanding of exposure and achieve better results in their photography.