The first digit assigned to all Visa cards is four, and the second through sixth numbers are connected to the financial institution. Then, either the seventh through 12th numbers, or the seventh through 15th, are the account number, while that final 13th or 16th digit is the check number.
Limited color, Lossy format, small file. GIF(Graphics Interchange Format) is limited to an 8-bit palette, or 256 colors. This makes the GIF format suitable for storing graphics with relatively few colors such as simple diagrams, shapes, logos and cartoon style images.
Smaller file size than RAW (so more images can be captured to a media card). Increased burst shooting possibilities. Disadvantages. Lower resolution than RAW. JPEG. A JPEG image file is a RAW file that has been converted by the in-camera DIGIC processor and saved as a compressed file. It can be saved at different image sizes and levels of compression to give different file sizes.