Meterology: GPS Light Meter

Meterology suggests a shutter speed and aperture for film and digital cameras from your location, the time of day and the current weather, or from a reading through the iPhone camera. The location reading estimates open outdoor light, so switch to the camera reading for shade, window light and indoor scenes. Choose your film to apply the long exposure correction its maker publishes, and choose your camera and lens so Meterology keeps to settings your gear can make. On Apple Watch, raise your wrist for a reading from location and weather, and keep your last exposure on the watch face.