Aperture Part - II

Shutter speed and aperture / diaphragm must be synergy to get the proper exposure. Perimeter exposure can be seen through the light meter on the camera DSLR. If the indicator light meter pointing toward the negative, the image will be dark (under exposure) and otherwise the image will over exposure if the indicator light meter pointed toward the positive.

The problem that often occurs is in low light conditions it would be difficult to use a small aperture. Instead the heat of hard to use wide aperture. The light is too strong to be balanced with a narrow aperture to avoid over exposure. 

Conversely, in low light conditions the diaphragm should be opened as wide as possible so as not to under exposure. Here you would be wise to set this photography kompenen the aperture and shutter speed. If you want a wide DOF (smaller aperture) in low light conditions, you need to do is reduce the shutter speed. With a low shutter speed, camera shake is very big possibility. To avoid camera shake (shaking camera) need to use a tripod to prevent blurry images due to camera shake not when you press the shutter button's

Shooting at night with a light potluck. DOF Width (small aperture) need to use a tripod to keep images sharp
DOF is one of the important concepts you need to master photography. By setting sharp cast, you can do a selective focus on the main object that you want to highlight, and obscure other elements are less important.

Aperture priority (Av) is used if you put the diaphragm settings. If you prioritize aperture, shutter speed automatically adjusts to the lighting conditions. In addition to aperture, there are several other factors that can affect the DOF, namely:

• Distance of the object or objects to the camera. The closer to the lens, the more background blur
• Size of the lens, telephoto lens has a narrow DOF, wideangle lens has a DOF Width
• Largest and smallest aperture size owned lens. A lens with a wide aperture facility easier to do selective focus.