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Message: <blockquote data-quote="jpb71" data-source="post: 791883" data-attributes="member: 51191">Hi,I need to set up my camera so it automatically takes one shot every 2 seconds, set to aperture priority mode, for approximately 40 minutes. The shoot is an art performance, and will occur just before sunset, so the light will be fading and I expect the shutter speed will gradually become slower to accomodate the dimishing available light, thus also gradually increasing motion blur of the moving subjects. Obviously I will mount the camera on a tripod and leave it until I need to stop the process manually.What's the best way to achieve this? Are there any important factors I need to take into consideration that I haven't mentioned?Thanks.</blockquote>