Press the depth-of-field preview button to stop down to the current aperture setting. The diaphragm in the lens will close to the current aperture and you can check the depth of field (range of acceptable focus) through the viewfinder.
The higher the f/number, the darker the viewfinder will look. In the < A-DEP> mode, press the shutter button halfway to focus, then press the depth-of-field preview button while still pressing the shutter button halfway.
The exposure is locked (AE lock) while you press the depth-of-field preview button.
Was this article helpful?
Are You Frustrated Because Your Graphics Are Not Looking Professional? Have You Been Slaving Over Your Projects, But Find Yourself Not Getting What You Want From Your Generic Graphic Software? Well, youre about to learn some of the secrets and tips to enhance your images, photos and other projects that you are trying to create and make look professional.