About anti-theft: There are several principles that photographers must understand.

Several principles of picture anti-theft are as follows:

1, posted on copyrighted websites or photo sharing platforms.

2. Set the composite watermark, and the watermark will not be edged.

3. When the photos are spread on the Internet, they don't send big pictures or original pictures.

4. Enter the detailed EXIF to save the original data file.

5. Text warning reminds that misappropriation is prohibited.