CanonSGLens is a free Android app developed by 123di.com that provides detailed lens specifications of all Canon EF, EF-S, EF-F, and RF lenses sold in Singapore. The app also features a unique interactive simulator that lets you compare the field of view of two camera-lens combinations, using any Canon EOS digital SLR and lens.

With over 480 ways to group, sort, and filter the Canon lens range, the app offers a comprehensive comparison of lens specifications, including high-resolution MTF charts and lens construction diagrams. The Field of View simulator features multiple photos taken of the same scene in Singapore, using different camera-lens combinations.

The app also includes a Depth of Field simulator and calculator, as well as a Perspective Simulator. In-depth topics with interactive simulators explain how aperture and shutterspeed affect exposure, depth of field, and motion blur in various exposure modes. The app is highly visual and optimized for both portrait and landscape orientations, making it user-friendly for photography enthusiasts of all skill levels.