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Digital video cameras keep growing in popularity as the number of features grows and the price decreases. There are numerous digital video camera add-ons that can make these kinds of devices even more handy as well as useful. From tiny “flip” cameras to high-end professional digital video cameras, these technological wonders are getting to be practically indispensable to modern life. Digital video camera accessories can add significantly to your satisfaction of your camera.

One particular popular digital camera accessory is a tripod. Regardless of whether they are designed to stand on the floor, or even on a table top, tripods make certain that any video captured will be steady instead of jerky, and it makes it handier to take longer videos, because the videographer doesn’t have to hold the camera in place for long times. Tripods vary in cost from $10 to around $100, so you can find one in about any price range. Have a look at Gorillapod tripods, too. They’ve flexible arms that can secure your camera to almost anything.

The most useful digital camera accessories is definitely an extra battery. Having a battery rundown at a crucial point in a video shoot can be a hassle, unless there are back-up batteries available. You’ll have to get one to match the exact model of video camera, simply because all of them require different batteries. By providing batteries to the video photographer in your life, you’re really giving the gift of time savings. It is a great accessory to treat yourself to as well.

Additional memory cards are also extremely useful digital camera accessories. Several video cameras usually takes several kind, nevertheless , you should verify the model number to make sure. Should you, or the person you are purchasing for don’t have a built-in computer card reader, it is possible to buy card readers that attach to the USB port. These are incredibly helpful for transferring video to other people’s computers, where there might or might not be a card reader built in.

For about $20 you can get a power adapter for the hugely well-liked Flip video cameras. These will charge up a flip camera in 2 to 3.5 hours, in addition they are compact as well as fold up even more compactly therefore they will have absolutely no trouble fitting in a pocket, purse, or camera case.

Another marvelous little item is the Nikon 7072 Lens Pen Cleaning System. It’s really a pen shaped device that may be used to clean lenses on cameras, telescopes, or even binoculars. It has a soft, retractable brush, plus a non-liquid cleansing compound on the tip made from chamois. It is perfect for getting fingerprints, dust, as well as debris off a lens and costs about $10.

Attachable LCD shades are wonderful digital video camera accessories. They come in sizes to fit 2.5 and 3 inch LCD screens and can be acquired for under $20. They make taking video outdoors in bright conditions much easier on the eyes by shading the LCD screen to ensure it turns up much better.

Digital video camera accessories tend to be more than fun little add-ons. They could truly make it more convenient to use a digital camcorder, and therefore are welcomed by all digital video aficionados. Digital video camera accessories range on price from under $10 to around $100, so you’re certain to locate something in your desired budget. They are actually excellent presents, even though the recipient is you!

Learn more about the amazing video camera Vado HD, then visit Tim Caroll’s site on how to choose the best pocket digital camcorder and what it can do for you

If the box blares "300X" or other numbers about the “Power” the scope within has, Caution! High power sounds great, but, there’s a catch. While high magnification makes an object appear larger, light gathered by the scope is spread over a larger area creating a fainter image. Also, "high-powered" scopes have restrictions of the eyepiece design, which may limit how much of the large image you can actually see. Sometimes, lower power provides a better viewing experience

Telescopes come in three basic designs; Refractor, Reflector, and Catadioptric.

A refractor uses two lenses. At one end (the end farther away from the viewer), is the larger lens, called the objective lens or object glass. On the other end is the lens you look through. It is called the ocular or eyepiece.

The objective collects light and focuses it as a sharp image. This image is magnified and seen through the ocular. The eyepiece is adjusted by sliding it in and out of the telescope body to focus the image.

A reflector works a bit differently. Light is gathered at the bottom of the scope by a concave mirror, called the Primary. The primary has a parabolic shape. There are several ways the primary can focus the light, and how it is done determines the type of reflecting telescope.

Many observatory Telescopes use a photographic plate to focus the image. Called the Prime Focus Position, the plate is located near the top of the scope. Other scopes use a secondary mirror, placed in a similar position as the photographic plate, to reflect the image back down the body of the scope, where it is viewed through a hole in the primary mirror. This is known as a Cassegrain focus. (More on this later.)

Then, there's the Newtonian, a kind of reflector. So named because Sir Isaac Newton created the basic design. In a Newtonian, a flat mirror is placed at an angle in the same position as the secondary mirror in a Cassegrain. This secondary mirror focuses the image into an eyepiece located in the side of the tube, near the top of the scope.

Finally, there are catadioptric telescopes, which combine elements of refractors and reflectors in their design.

The first such telescope was created by German astronomer Bernhard Schmidt in 1930. It used a primary mirror at the back of the telescope with a glass corrector plate in the front of the telescope, which was designed to remove spherical aberration. In the original telescope, photographic film was placed at the prime focus. There were no secondary mirror or eyepieces. The descendant of that original design, called the Schmidt-Cassegrain design, is the most popular type of telescope. Invented in the 1960s, it has a secondary mirror that bounces light through a hole in the primary mirror to an eyepiece.

Our second style of catadioptric telescope was invented by a Russian astronomer, D. Maksutov. (A Dutch astronomer, A. Bouwers, created a similar design in 1941, before Maksutov.) In the Maksutov telescope, a more spherical corrector lens than in the Schmidt is utilized. Otherwise, the designs are quite similar. Today’s models are known as Maksutov –Cassegrain.

After initial alignment, refractor optics are more resistant to misalignment. The glass surfaces are sealed inside the tube and rarely need cleaning. The sealing also minimizes affects from air currents, providing steadier sharper images. Disadvantages include a number of possible aberrations of the lenses. Also, since lenses need edge supported, this limits the size of any refractor.

Reflectors do not suffer from chromatic aberration. Mirrors are easier to build without defects than lenses, since only one side of a mirror is used. Also, because the support for a mirror is from the back, very large mirrors can be built, making larger scopes. The disadvantages include easiness of misalignment, need for frequent cleaning, and possible spherical aberration