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The era of digital cameras has many positive sides and one of the benefits is you don’t have to spent money to process the negative since you can see the result directly on the LCD screen on the back of camera’s body. Besides the pocket size digital camera, the digital slr camera also offers many benefits with attachable slr lenses. Here are some basic tips of the slr lenses for you, hope the tips helpful.

Basically, slr lenses have three main features. Those features are:  focal length, aperture, focusing. Each feature can give maximal result for the photos which taken with the digital slr camera so understanding these three features is an important issue for slr photographers. Focal length is specification which defines the coverage of the lens and it is measured in mm. The standard number which closest matches the magnification of human eye is 50mm.

Next is aperture, this is the light gathering capability. Each lens has different aperture size and bigger aperture size means the lens has capability to capture more light. The lenses with big aperture size can work better in dimmer conditions. Aperture is also known either as focal ratio or f-number. Last is focusing. Most digital slr cameras lenses are equipped with auto focus feature (AF) and specific lens has focus motor to allow photographer set the focus manually (MF) based on conditions. Now, you have basic information to choose slr lenses and good luck for your photography projects.

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