Protecting the image prevents it from being erased accidentally.
Image protect icon 2
Under the  tab, select [Protect images], then press <0>.
XThe protect setting screen will appear.Select the image and protect it.
Press the <U> key to select the image to be protected, then press <0>.
XWhen an image is protected, the
<K> icon will appear on the screen. To cancel the image protection, press <0> again. The <K> icon will disappear.
To protect another image, repeat step 2.
To exit the image protection, press the <M> button. The menu will reappear.
If you format the card (p.40), the protected images will also be erased.
Once an image is protected, it cannot be erased by the camera’s erase function. To erase a protected image, you must first cancel the protection.
If you erase all the images (p.130), only the protected images will remain. This is convenient when you want to erase unnecessary images all at once.