One of the important choices you make is deciding which memory card you use in the camera. You can use SD and SDHC, SDXC, and Eye-FI SD memory cards. Not all memory cards are created equal, and the type and speed of media that you use affects the Rebel T3i/600D's performance, including how quickly images are written to the memory card, and your ability to continue shooting during the image-writing process. Memory card speed also effects the speed at which images display on the LCD. And with the high-definition video capability of the Rebel, Canon recommends using a Class 6 or higher memory card.
At the time of writing, SDXC cards are not supported by all computer operating systems. If you insert the card into a computer or card reader and receive a message asking you to format the card, choose Cancel to avoid overwriting the SDXC format. For more information, visit the www.sdcard.org/develophers/tech/sdxc/using_sdxc website.
The type of image file that you choose for shooting also affects the speed of certain tasks. For example, JPEG image file write to the memory card faster than RAW or RAW + Large JPEG files. JPEG and RAW file formats are discussed in detail later in this blog.
As you take pictures, the LCD on the Rebel T3i/600D show the approximate number of images that will fit on the memory card. The number is approximate because each images varies slightly, depending on the ISO setting, the file format and resolution, the Picture Style, and the image itself (different images compress differently). And as you shoot video, the Rebel displays the recording time on the LCD. Video recording shuts off automatically when the size of the movie file reaches 4GB. For still and video shooting, an 8GB or 16GB card is a good size consider.
When you buy a new memory card, be sure to always format the card in the camera and never on your computer. Always off-load all images and movies to the computer before formatting because formatting erases images and movie even if you've protected them. Also cleans any images-related data, freeing up space on the card, and it manages the file structure on the card so the Rebel T3i/600D and memory card properly together.
NOTE: For the following step-by-step tasks that involve the camera menus, just press the Menu button, turn the Main dial to move to the camera menu tab you want. Press the up or down cross key to select an option, and then press the right cross key to select OK.
To format a card in the camera, be sure that you download all images and movies to your computer first, and then follow these steps:
1. On the Setup 1 camera menu tab, select Format, and then press the Set button. The Format screen appears asking you to confirm that you want to format the card and lose all data on the card.
You can optionally choose the Low-level format option that takes longer but completely erases all data and the recordable sectors on the card. The low-level format can improve the performance of the card.
2. Select OK, o to do a Low level format, press the Erase button to place a check mark next to Low level format, and then press OK.
3. Press the Set button. The camera formats the card, and then displays the Setup 1menu.
NOTE: Here's how to avoid talking pictures when no memory card is in the camera. On the Shooting 1 menu, select Release shutter without card. Press the Set button, select Disable, and then press the Set button again.
Avoid Losing Images
When the camera's are red access light - located on the back of the camera - is blinking, it means that camera is recording or erasing images data. When the access light is blinking, do not open the card slot the camera, and do not remove the camera battery. Any of these actions can result in lost images and damage to the memory card. There is a beep to let you know that images are being written to the card, but make it a habit to use the access light as the indicator to not to open the memory card slot cover or turn off the camera.
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