Photography | Selective Focus
© 2011 Wazari Wazir | My Son Playing With Danbo | Selective Focus
“Selective focus” means the use of a shallow depth of field to isolate or emphasize the subject in the photograph. Most of the times we only want certain part in the photograph to be in focus. In photography, we use a large aperture to isolate the subject from the background, by using a large aperture like f2.8. That is why photographers love to have a fast lens in their possession. It is a valuable tools that will help them separate their main subject from the background.
One thing that should be always on our mind when using large aperture is that, we must use a very fast shutter speed because if our shutter speed is not fast enough, the potential to get a blurry picture will be high because of the shallow of depth of field, any sudden movement when we press the shutter button can make the picture blur. In order to prevent that from happening, use a fast shutter speed. When I use 50mm lens shooting at wide aperture like f2, I will try to use a shutter speed of 1/100 and above and if I use telephoto lens like 70-200 mm shooting at f2.8, I will try to use a shutter speed of 1/200 and above.
