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I had the same problem with my Rebel T3i, and through Canon support I found the actual solution. On the T31, there is a movie mode menu you have to get to. To do so, you have to first put the camera in movie mode, THEN press the menu key. When you do that, a movie menu pops up, and one of the items is "Remote." It will be either enabled or disabled. So ...


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Any Canon EF or EF-S lens made since the EOS system was introduced in 1987 is fully compatible with your EOS Rebel T2i/550D. This is true regardless of whether the lens in question uses a "micro-motor", USM, or STM to move the lens' focussing elements. For the differences and advantages/disadvantages of using each type of lens, please see: Why do higher ...


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Here's a rule of thumb: you need about 100 mm of focal length per millimeter of sensor height in order for the moon to fill just under 90% of the height of the image frame (i.e., mostly fill it up). A bit more precisely, you need approximately 115 mm of focal length / mm of sensor height to completely fill the frame. So for a Canon APS-C camera with a ...


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Without modification, the Canon EOS 550D (Rebel T2i) is not suitable for infrared photography. The sensor stack is insensitive to IR compared with those of other cameras. There is likely an element, other than the hot mirror, that blocks a significant amount of IR. I suspect the Bayer filter. Even after modification, high-quality IR filters are needed. Any ...


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