Match with Canon Cameras?
This meter can be used with ANY camera, digital or film (or other) that has adjustable exposure controls. The same can be said of any light meter. Most Canon cameras, except for some basic point & shoot models, have manual exposure settings. The flash feature of this meter will also measure the flash, however, the auto features of the built in flash will do the same. This meter is particularly good when off camera flash not controlled by the camera auto-circuits is used (i.e. manual flash exposure) where the f-stop can be set manually, and the shutter brought down to the proper sync speed for flash (depends on camera). It can also be used for measuring lighting ratios, however, this may not be something you are doing at this point based on your question, but the meter will grow with your needs. When used properly, very precise and consistent exposures can be measured. Incident light measurements under appropriate lighting are very accurate, and far less influenced by subject reflectivity or non-averaging light level scenes (such as someone wearing a white dress in a bright background or in snow, where the camera reflected meter can be fooled into improper exposure).