Wednesday, August 24, 2011

Professional Cameras for photography Tutorial: The principles of Aperture



For you guys who are still beginning to learn about photography the first thing that you need to practice with is this three basic features, aperture, ISO and shutter speed, provided that you own a legitimate SLR. But for now let us get to know the aperture first what is it and how does it work? Let’s find out…

The aperture is mainly the window of your lens. What the aperture does is adjust the opening of your lens either wider or narrower depending on the settings you choose from. The smaller the “f” value is the wider the opening gets.  Like for example f/2 is the standard maximum aperture of most professional cameras for photography but there are even more SLR that offer as far as 2.8 or so. Before we touch on the numerical value let us first address this question…

Why is it important to vary the opening of the lens?

Let say for example you are taking pictures in an art exhibit and the room is quite dark. When set the aperture to give a smaller opening there wouldn’t be enough light getting through and hence, the result is an under exposed photo. So if you widen the opening you get more lights and the result is a great picture.

Now the next step is learning the relationship between the numerical value you see on the screen and the opening of your aperture or lens. It’s quite simple the bigger the numerical value is the smaller the opening becomes. By adjusting the f value you can either blur the background of your subject or you can increase the sharpness of the entire picture. Nikon D5100 and most Digital SLR camera’s f value ranges more or less than f/32 and f/2 or lesser values.

Also with whatever professional camera for photography you are using make sure you set the AF-S (auto focus single) mode and not the AF-A (auto focus auto) if you are trying to focus a single subject, but if you are not or if you wish to do it in auto mode then the camera will focus any area of the photo randomly.

So now that you are a bit more knowledgeable with how aperture works its time that you should experiment on your own. If only there’s an actual formula I would be glad to share it with you, but there isn’t so you’re on your own with that.


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