How about available light? No problem here. If you are not an EOS-1N, EOS 5 or EOS-3 user, the Partial metering mode is your only option in the AE shooting modes available in other EOS models if the Evaluative system is not the preferred choice. However, shooting in available or low-light photography can be a little tricky with the Partial metering since not all scenes may have the desired subject size suitable for use in this mode. In this case, the AE Lock feature, available in all the beginner and amateur EOS models, come in handy when Partial metering is used, especially if you happen to be shooting with fast aperture zoom lenses for available light photography. Partial meter aimed at mannequin on the right Partial meter aimed at glass wares on top left Partial meter aimed at promoter's face (left) Zoom in to get reading on face, zoom out, recomposed In the photos of the gallery below, with scenes such as broad daylight, available and low light photography, show how the Partial metering mode is utilized for maximum effect. Partial Metering Gallery Daylight Scenes Partial meter aimed at buildings, ignored foreground traffic Partial meter aimed at Pepsi logo (on left) Partial meter aimed at between sky and buildings Partial meter aimed at center area of building & sky Partial meter aimed at walking couple     << Back to Main . 1 . 2 . 3 . 4 . 5 .