If you have ever tried taking pictures straight from your television screen, you might have sometimes noticed horizontal lines running up and down the picture. That is because a TV screen is "painted" one pixel at a time from top to bottom. The lines appear on your pictures when you use a shutter speed that is too fast and that "freezes" the lines on the television image.

submitted: 5 years and 3714 days ago

When parallel rays of light strike a lens focused at infinity, they converge to a point called the focal point. The focal length of the lens is then defined as the distance from the middle of the lens to its focal point.

submitted: 5 years and 3714 days ago

More and more consumer digital cameras are now including a histogram display either during the Record mode or in the Playback mode. This tutorial explains just what the histogram is and how you can use it to ensure a correctly exposed picture.

submitted: 5 years and 3714 days ago

Most digital cameras use contrast detection to auto focus (AF). Usually, the focus point is a small rectangle in the middle of the viewfinder frame (Center AF), though many digital cameras now also offer additional AF points (Multi-Point AF).

submitted: 5 years and 3714 days ago

Most of the newer digital cameras include three focusing modes: Center Focus, Area Focus and Multi Focus.

submitted: 5 years and 3714 days ago

The use of a frame can turn an otherwise plain picture into a pleasing one. Usually a foreground element is used to create the frame. Examples are an overhanging tree branch, a window frame, a door, arches, a fence, rows of trees, etc.

submitted: 5 years and 3714 days ago

If you have pictures where the foreground is too dark while the background seems to be correctly exposed, then using fill-in flash may be a technique worth learning about. Using fill-in flash, as the name implies, is to use flash to fill-in light where it is deficient. This is usually the situation when you are in the shadows and shooting through objects in the foreground that are acting as a frame.

submitted: 5 years and 3714 days ago

A good fireworks picture can be one of the most spectacular picture you take, and the opportunity comes only once or twice a year. How can you take good fireworks pictures with your digital camera? It's not too difficult and you don't need an expensive digital camera to do so -- but there are a few pointers to keep in mind.

submitted: 5 years and 3714 days ago

One of the major difference between a consumer digital camera and a digital Single Lens Reflex (DSLR) is that the former produces images with a lot of noise when using high ISOs and long exposure times, and the latter is practically noise-free (though high ISO performance varies depending on camera manufacturer and model). Noise is apparent by the presence of color speckles where there should be none. For example, instead of a blue sky, you notice faint pink, purple and other color speckles amongst the otherwise blue sky.

submitted: 5 years and 3714 days ago

When you take a picture with your camera set on Auto mode, you are delegating responsibility for determining the correct exposure to the camera. Depending on the 'brain' (or programmed chip) inside your camera, the result may be pleasing or not to your satisfaction. But before you blame the camera for your lousy pictures, it pays to understand a bit what goes on behind the scenes when you press the shutter release button. In this tutorial, we are going to look at what 'correct exposure' means.

submitted: 5 years and 3714 days ago