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Tuesday, November 9, 2010

how to choose digital camera

Resolution, aperture, zoom, and software quality: The quality of a digital camera is mainly defined by four variables. CCD sensitivity also varies slightly.
2-Megapixel = 1600x1200: Pretty good 8x10.
4 megapixel = 2272 x 1704: Great 11x14 and 16x20 is acceptable.
5 Megapixel = 2560x1920: Pretty good 16x20.
6 to 10 Megapixels = At this stage tend to be limited by the lens not the pixels.


Many photographers have large prints in all sizes, while those who think 8x10 at a distance of three inches for me, I'm too generous in previous evaluations look happy.The opening of a lens is its maximum aperture. More openness, more light is collected and less light you need to make a good photo. This is the specification of the higher end, but it is very important, especially when indoor photos without flash, or as a reasonable distance.the aperture is measured in F numbers such that f / 2.0 f / 3.5 aperture of f/2.0 or the, literally, this means that the first half of the lens focal length of the lens. Therefore, a smaller number, a more open goal. You prefer a goal that is f/2.0 f/4.0 lens has a.

I like a fast (large aperture) lens have. This means you can take pictures indoors without flash, which seems much more natural than flash photography. You can also much less intrusive photos without flash. Digital photographers tend to take lots of photos, and one can make you crazy when people take 20 pictures with flash in ten minutes. Once you notice that your shooting from these twenty shots with flash, and much better shots.So what is a good opening? The answer is getting worse, not better. I prefer not to a camera with a lens to buy slower than 2.8. My favorites were a few years ago and C4040Z Olympus C3040Z, f/1.8 lens. These days you can hardly find an SLR with a lens f / 1,8. The best appears to be f/2.8 - f/3.5.Note that zoom cameras often have a maximum number of openings on the list, as f/2.5 - f/4.0. This means that the f/2.5 maximum aperture at wide angle and maximum aperture is f/4.0 telephoto lens.


Zoom has a focal length variable. The focal length determines the magnification of the lens. A short focal length of the wide-angle lens, ideal for shooting wide. A long lens is a telephoto lens that lets you finish a picture of a distant object or person can get. Zoom function allows you to set two of these and all other in a single lens. If a camera has a 3x zoom lens, which means that the longest focal length is 3 times shorter.In the ensuing discussion, I am corresponding with 35-mm focal length.Most digital cameras have a 3x with a focal length of 35 mm to 105 mm zoom. 35 mm wide angle is a modest, and 105 mm is a modest telephoto. Super Zoom Cameras have extreme ranges of 8X or 10X optical zoom. They usually have about the same minimum focusing distance of about 35 mm, but these usually have a larger maximum length of the activity. Digital cameras typically have interchangeable lenses that you choose any focal length you can.Focal length means you can get a picture of narrow faces of their children, or a blow to the football field where her son is actually visible. extreme focal lengths, you can actually closer to the action, even in the stands of a football field.Longer focal lengths present problems for photographers. It's hard enough to keep a fixed camera at a focal length of 300 mm. The sunlight helps, and a tripod can do wonders. A growing number of cameras with zoom lenses to compensate for camera shake is extremely stable.
The stabilization of good quality can make a remarkable difference in sharpness of photos of hands at the end of the focal lengths. Do not buy a super zoom without image stabilization, if you want to use a tripod.


Ultra-compact with a 3x zoom. The great merit of this is that you always have your camera. The quality of the best ultra compact surprising for its size.Super zoom with a 10x zoom in the vicinity - 12X. Just a little more than the best ultra-compact, so you get photos from a distance. Make sure that the image stabilization. SLR. This is what the pros use, and for good reason. You can use any of a variety of lenses (with charge), and you can take great photos with less light. But they are big and expensive.


The objectives with the same focal length and aperture can vary considerably in quality. A bad lens is not as strong and the chromatic aberration, so that all colors are brought in have meant the same concentration. This usually appears as bands at the edges with high contrast.

In contrast to the opening and zoom range, you can not read, the quality of the lens of the camera. The two best approaches to achieving a good target: (1) read and (2) with the camera manufacturer with good reputation. I tend to trust companies camera like Olympus, Nikon, more electronics companies that moved straight to the camera with the advent of digital photography Canon. I think it is easier for a device manufacturer with the integration of electronics, rather than integrating to a manufacturer of optical camera of good quality. Some electronics companies are in relation to the target enterprises with good reputation for purchase.


Here I am not talking about photo software that came with the computer, but the embedded software in the camera. Take a digital photo means a lot of calculation. If you take a digital photo, the camera first takes a pre-image to determining the color balance and brightness of the scene.
Then it grows in real terms, based on the above information.

This is an important calculation. The importance of brightness is obvious. Less obvious is how radically different colors of light sources. Slide photographers do. If you standard daylight film take indoors under incandescent, everything is orange. Photographers film look a little problem because the processing labs, our photos on the right pressure for most of these color changes. With digital photography, you want to do the camera All this color compensation for you. It is not easy, because the camera is a distinction between a bulb and a scene with lots of light to distinguish red and orange.The good news is that some cameras a remarkable job, better color I've seen some expensive custom work for custom photo labs is there to do. My personal impression is that Olympus is the best, with Canon and Nikon in second place. Sony seems behind in this area.


Most digital cameras use CompactFlash or Secure Digital. The difference is not worth the effort if you already have a good supply of a type.Many Sony cameras use their own capital Flash memory cards. I prefer to avoid proprietary solutions, because it limits their options for the future strong. The trend is to Secure Digital.I would prefer to hear about the brand and model to visit DP Review Steve and digital cameras. They have a wealth of information on nearly every digital camera worth buying.However, I know not everyone wants to read hundreds of comments. Some of you want to know how to avoid a bad decision. Here is my attempt to address the best brands.As a little skeptical about this list. Change camera models, and frankly I do not think all the cameras on the market. Using this list you can miss a lot better today, but not much less. It's my own biased point of view and distilled not from reading a good camera and some comments to Usenet groups.Olympus, Nikon, Canon. These companies have to do the story a good 35 mm cameras and lenses. She translates this experience very well in digital cameras. I recommend the full range of Olympus and Nikon. I do not like the slow camera lenses from Canon cute. High-end weapons are ideal. Just enable the opening and you'll be fine. Fuji. If someone asks about the best cameras under $ 300, the name of Fuji is often heard.

I do not want to Sony as a general recommendation because, although they cameras, I would recommend that do not have much else. If you are willing to do his homework enough to know what are that you can not hear my recommendation. Kodak also has some lucky owner.All I know is that the brands have better and more trust in them.Here are some proposals in January 2007. What you get depends on how much would you invest if you have a camera that fits in your pocket and you want to make 8x10 or want more. Direct links noted below Steve Digicams model photos and a detailed description of the features include.

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