How to Use a Gray Card in a Canon 40D?

Answer The human eye has the capacity to detect the color white even when it reflects various forms of light, such as golden sunsets or green fluorescent. Cameras have no such luxury, but they are equippe... Read More »

Top Q&A For: How to Use a Gray Card in a Canon 40D

Hi i have 8GB sdhc sandisk memory card when i inserted in my canon camera its said card error card locked ichecked on the side it was fine when i insert in my PC it reads can you pls help?

Maybe. Take it into a camera shop and ask them to do a card recovery. Sometimes they can retrieve the images. Another way is to use photo recovery software. One I used before is Asoftech Photo Rec... Read More »

How to Use an 18% Gray Card?

An 18% gray card being used for a video cameraGetting the color just right in your photography can be difficult at best. There are incandescent lights, fluorescent lights, less than favorable light... Read More »

Should you spend the extra money for a high speed SD memory card for a Canon A560 camera or will a slower card work just as well?

Answer Slower speed SD cards will also work in the camera but performance of camera will be slower when compared to using a higher speed SD card. When the picture is taken, picture data is tempor... Read More »

Hi your memory card has been locked unfortunately how to unlock your memory card in canon digital cam?

You have it set wrong. You can change the shutter speed in the menu