Choosing File Numbering

The  Rebel T3i/600D automatically numbers your images for you, but can change the sequence to suit your work.

At the default settings, the Rebel numbers images and assigns prefixes and file extensions. Both JPEG and RAW files begin with the prefix IMG. Movie files begin with MVI_and hav a .mov file extension. The flexibility comes in because you can choose the type of file-numbering method that the camera uses, and your choice can help you manage images on your computer. The file-numbering options are Continuous, Auto reset, and Manual reset
(Show in Figure 1.11).

Working With Folders

With the T3i/600D, the camera automatically creates a folder in which to store images. However, you can set up additional folders and that's helpful if you want to keep images for different scenes and subjects in separate folders. Plus using folders can help you organize images as you download them to the computer. On the T3i/600D, each folder can contain up to 9,999 images, and when that number is reached, the camera automatically creates a new folder.

Resizing JPEG Images In The Camera

If you want to have images read to use off the memory card in a digital photo frame, on a web or social medial site, or to send in e-mail, you can resize most JPEG images directly in the camera. Whne you resize an image, the T3i/600D creates a copy of the original file, resizes it to the size you choose, and then saves  it as a new file on the memory card. The original image is left intact on the memory card so that you have a full-size image for editing and printing. You can only resize JPEG images captured as Large, Medium, S1, or S2. RAW and S3 JPEG images can't be resized.


On the Rebel T3i/600D, you can also choose to capture both RAW and Large/Fine JPEG images simultaneously. The RAW + JPEG option on the image Quality screen show in Figure 1.110 is handy when you want the advantages that RAW file offer, and you also want a JPEG image to quickly post on a website or to send in e-mail. If you choose RAW + PPEG, both images are saved in the same folder with the same file number but with different file extensions. RAW file have a . CR2 extension, and JPEG files have a. JPG extension.

RAW Format

RAW files store image data directly from the camera's sensor to the memory card with a minimum of in-camera processing. Unlike JPEG images, which you can view in any images - editing program, you must view RAW files using the Canon Image Browser or Digital Photo Professional, which are programs included on the EOS Digital Solutions Disk. Or you can use another RAW - compatible program such as Adobe Bridge, Lightroom, or Camera Raw. Most operating systems, such at the Mac, provide regular updates so that you can view RAW images on you computer without first opening them in a RAW conversion program. To print and share RAW images, you must first convert them by using a program that supports the T3i/600D's RAW file format, and then save them as a TIFF or JPEG file. You can use Canon's Digital Photo Professional program are  Third-party Raw-conversion program to convert RAW images.

Should You Use The S2 and S3 JPEG Options?

On the T3i/600D you have two additional JPEG options ; S2 and S3. Both options create images that are saved with low compression, but at very small sizes. The S2 option produces images at a diminutive 3.5 x 5.1 inches with a 2.5 megapixel recording size, but the image is at a size that fits into a digital photo frame with no resizing needed in an editing program. The S3 option produces even smaller images that are ready for you to send in e-mail or post on the web, and it record on 0.3 megapixels. These are convenient options, but because you cannot shoot these small file in combination with a large size , you have to be certain that you will never want large versions of you S2 and S3 images.

JPEG Format

JPEG, an acronym for Joint Photograpic Experts Group, is a popular file format for digital images that provides not only smaller file sizes than the RAW files, but also offers the advantage of being able to display your images straight from the camera on any computer, on the web, and in e-mail messages. To achieve the small file size, JPEG compresses images, and in the process, discard some data from the image typically data that you would not easily see. This characteristic of discarding image data during compression is why JPEG compression. High compression level, the smaller the file size and the more images that you can store on the memory card, and vice versa.

Choosing The File Format and Quality

When it comes to deciding what kind of image to capture, you have three choices. You can first choose whether to shoot JPEG or RAW images, and then you can decide the size or quality of the files. The file format and quality level decision are important ones because they determine not only the number of images that you can store on the memory card, but also the size at which you can print images from the Rebel T3i/600D.

Memory Cards

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.

Getting Started With The Rebel T3i/600D

Even if you've aready set up the T3i/600D, I suggest that you review this section foe settings that you may have missed or want to adjust.

Many people are afraid that changing camera setting will "mess up" the pictures that they're getting, and that they wont't know how to reset the camera if they don't like the changes they've made. But there is no reason to worry because Cannon provides a reset option so that you can always go back to the original setting on the Rebel T3i/600D and start fresh.

Viewfinder Display

On the Rebel T3i/600D, the optical, eye-level pentamirror viewfinder displays approximately 95 percent of the scene that the sensor captures. In addition, the viewfinder display the AF points, a 4-percent Spot metering circle that is displayed at the center of the viewfinder, as well as information at the bottom that displays the current shooting settings, a focus confirmation light, and other settings.


With the T3i/600D, the 3-inch LCD not only displays captured images and current camera settings, but it also provides a live view of the scene when you're shooting in Live View and Movie modes. The LCD display 100 percent coverage of the scene coverage of the scene. Figure 1.8 provides LCD detail.

Lens Controls

Depending on the lens your are using, the number and type of controls offered vary. For example, if you using an Image Stabilized lens, such as the lend, the lends barrel has a switch to turn on images Stabilization, which helps counteract the motion of you hands as you told the camera and lens,

Many Canon lenses offer the Focus modes switch the enables you to switch between autofocus or manual focus. Image Stabilization (IS) lenses offer controls to turn stabilization on or off. Lens controls differ by lens.

Depending on the lens, additional controls may include the following.

Side of The Camera

On the side of the T3i/600D is a set of terminal under a cover and embossed with icons that identify the terminal, which include.

>>External microphone IN terminal. This terminal enables the connection of an external stereo microphone that you can use to record sound with videos.

>>Remote control terminal. This terminal enables the connection of an accessory Remote Switch RS-60E3.

>>Audio/Video OUT/Digital terminal. The A/V OUT terminal enables you to connect the camera to a nonhigh-definition (HD) television set using the A/V cable supplied in the camera box to view still images and movies on the TV. This cord is also used for printing directly from the camera to the printer.

>>HDMI mini OUT terminal. The HDMI (High-Definition Multimedia Interface) mini OUT terminal is used to connect the camera to an HD television using the accessory HDMI Cable HTC-100 cable to play back still images and movies on the TV.

Rear of The Camera - Part 2

The four buttons grouped around the Set button are collectively referred to ass cross keys. The fuctionality of the keys changes depending on whether you're playing back omages, navigating camera menus, or changing exposure settings. Also you can adjust the setting designated by the key only P, Tv, Av, M, and A-DEP modes. in automatic modes such as Portrait and Landscape, only some of the keys are available. For example, in Portrait shooting mode, you can press the Drive mode key to select some of the drive modes.

Rear of The Camera - Part 1

The controls on the back of the Rebel T3i/600D. Some of the rear camera controls can be used only in P, Tv, Av, M, and A-DEP shooting modes. In automatic camera modes such as Portrait, Landscape, and Sport, the camera sets the majority of the camera settings for you, so pressing the AF,WB and Drive mode selection button has no effect. But in P, Tv, Av, or M, and A-DEP shooting modes, these buttons function as describeb in this section.

Here is a look at the of the camera:

Top of The Camera

Controls on the top of the camera, show in Figure 1.5, enable you to use your thumb and index finger on your right hant to control common adjustments quickly. Here is a look at the top of the camera.

Front of The Camera

On the front of the camera, the controls that you'll use most often are the Lens Release button and the Depth-of-Field Previem button (show in Figure 1.4). And, of course, you'll use the lens mount each time you change lenses.

Roadmad to the Rebel T3i/600D

With the clean desing of the T3i/600D , you can use your thumb to quickly adjust the key controls on the back of the camera. The camera has good heft that helps stabilize it in your hand. The grip is deeper then on previous models, and the channel pad on the back is sculpted to steady your thumb when you are holding the camera. when you're shooting in positions where it's awkward or impossible to look through the viewfinder, just flip out and rotate the articulated LCD screen to get a 100 percent view of the scene at the angle you need. The LCD is also indispensable when you're recording movies.

The T3i/600D's most frequently accessed camera controls are easily accessible for quick adjustments as you're shooting. Less frequently used functions are accessible from the camera menus. The following sections will help you get acquainted with the camera's buttons and controls. It's good ideal to familiarize yourself with the name of the controls because those names will be used throughout the book.

Overview of the T3i/600D Camera Control


There are several key camera controls that you will use often. The following selections provide methods for using the controls efficiently.

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