How to Save a File Image in JPEG with Canon Rebel T5/1200D - dummies

How to Save a File Image in JPEG with Canon Rebel T5/1200D

By Julie Adair King, Robert Correll

For Canon Rebel T5/1200D the default setting is for most digital cameras is known as JPEG (Joint Photographic Experts Groups) and is popular for two main reasons:

  • Immediate usability: JPEG is a longtime standard format for digital photos. All web browsers and e-mail programs can display JPEG files, so you can share them online immediately after you shoot them. You also can get JPEG photos printed at any retail outlet, whether it’s an online or a local printer. Additionally, any program that has photo capabilities, from photo-editing programs to word-processing programs, can handle your files.

  • Small files: JPEG files are smaller than Raw files. And smaller files mean that your pictures consume less room on your camera memory card and on your computer’s hard drive.

The downside is that JPEG creates smaller files by applying lossy compression. This process actually throws away some image data. Too much compression produces a defect called JPEG artifacting. The figure below compares a high-quality original (left photo) with a heavily compressed version that exhibits artifacting (right photo).


On your camera, the amount of compression that’s applied depends on whether you choose an Image Quality setting that carries the label Fine or Normal:

  • Fine: At this setting, very little compression is applied, so you shouldn’t see many compression artifacts, if any. Canon uses the symbol that appears in the margin here to indicate the Fine compression level; however, the S2 and S3 settings both use the Fine level even though they don’t sport the symbol.


  • Normal: Switch to Normal, and the compression amount rises, as does the chance of seeing some artifacting. Notice the jaggedy-ness of the Normal icon, as shown in the margin? That’s your reminder that all may not be “smooth” sailing when you choose a Normal setting.


Note, though, that the Normal setting doesn’t result in anywhere near the level of artifacting that you see in the example in above. Again, that example is exaggerated to help you recognize artifacting defects and understand how they differ from other image-quality issues.

In fact, if you keep your image print or display size small, you aren’t likely to notice a great deal of quality difference between the Fine and Normal compression levels. The differences become apparent only when you greatly enlarge a photo.