From Studio Canvas:
Please read carefully as there are some hardware requirements and limitations when using the app.Control your DSLR camera from your iPhone or iPad with five different modes of operation. Shoot, Long Exposure, Time Lapse, HDR Bracketing and Movie Mode. DSLR.Bot also has a GPS logging feature for geo-tagging your photos. This app requires an infrared transmitter to control the camera functions. Please visit www.dslrbot.com to check the compatibility of your camera. The DSLR.Bot Infrared Transmitter is also available for purchase from the website as well as DIY instructions to create your own.Warning for the iPhone and iPod Touch devices purchased in the European region. There is a Volume Limit Cap applied to these devices which may severely affect the performance of the IR transmitter and in some cases will not work. Unless you are familiar with a workaround to this Cap, please proceed at ones own discretion.