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Learn the ropes of Digital Photography

There are certain features on modern digital cameras that you can live without. Two closely related features in that category are digital zoom and interpolated resolution. Both rely on the same principle, and it is definitely something better left to the editing software on your computer. When on the subject of digital cameras, interpolation is just a term for a computer's best guess as to what should happen when you try to turn one large pixel into more than one smaller pixels. The computer (whether it's your home PC, a dedicated graphics machine at a photo lab, or the chip in your camera) uses mathematical formulas that try to guess, based on the colors of surrounding pixels, what the new substitute pixels should look like. For example, if a series of black pixels in a line on a white background are doubled, the pixels added between the black pixels will be black, and those between the white pixels will be white.

You can use your photo editing software or even many picture viewers or dedicated programs, to view and copy EXIF data. It can also be used by specialized software provided by the camera manufacturer when loading pictures into your computer to record information about camera settings and even provide editing options. One of the things these transfer programs can do is to change the timestamp of the newly created file to match the time the photo was taken. That's another good reason to set the clock on your camera to the correct time. This data can be used to record a log of photographs for a variety of purposes. The time a favored shot was taken may be referred to later in duplicating light conditions. You can keep track of settings for experimenting with changes in settings, and never get your pictures mixed up because the data is stored as part of the file itself. You can export or copy the EXIF information and not have to manually enter information in your log.

Rough Side of RAW: RAW formats differ from camera to camera and there are debates about camera programming that provides some control over your RAW files by the camera manufacturer. Where protests have been issued, there is an effort to provide standardized RAW formats that would better serve the consumer where general market software could be used to edit the RAW material. If your computer is equipped with lots of processing memory, RAW data will not be as much a problem, however presently, RAW files take a lot more time to open and process than JPEG and TIFF files. That is where the option to capture in RAW and JPEG simultaneously is a strong benefit. While standard editing software is now offered on the market, the way that software processes RAW files may differ depending on how the software from the manufacturer is recognized by the software. Thus, be sure to find and ask a savvy sales expert. Most sensors record light over a 12-bit range, with intensities of more or less 4096 possible values. Each sensor with 12-bit output is one and a half bytes. So our small chip with 20,000 light cells gives a raw output of 30,000 bytes. In an actual file there is some non-image information, but that can be ignored for simple calculations.

When discussing image quality for digital photographs image noise is the equivalent of film grain for analogue cameras. Despite the fact that we are working in a visual instead of an audio medium, it is called noise, which is analogous to the subtle background hiss when a television channel has no broadcast or your audio system is turned up at full volume without a record or disk. In digital images, noise refers to random specks on the surface of a photo, which can degrade the quality of the image. While noise is often seen as a distraction and detriment to a photograph, it can be a desirable condition for certain artistic effects. Noise varies with sensitivity settings, length of exposure, temperature, and different camera models. The signal to noise ratio (SNR) is a useful and universal way of comparing the relative amounts of signal and noise for any electronic system. ISO setting or ISO speed are the standards, which describe a camera's sensitivity to light. A camera's relative sensitivity to light is represented by the ratio of the two ISO numbers. In terms of practical application, a photo taken at ISO 200 will take half as long to reach the same level of exposure as a photo taken at ISO 100 where all other settings are the same.

This editor offers many of the common features any photo editor may need. There is a freeware photo editor called Image Forge Image Forge lets you paint and edit many of your photographic images. You can create some special effects and make one of a kind prints with Image Forge! With Image Forge, you can easily correct any problems that you find with your digital photographs. Whether you want to touch up a person's face, erase a tree or add stunning color, you can do it with this software. If you want to instantly find and edit any and all of the pictures on your personal computer, there is no better tool to use than a freeware called Picasa! This program works to help you organize and sort through all of your digital pictures. You can make stunning photo collages and albums, as well as edit any problems you may have with any given picture. Picasa also allows you to create a photo "album" that you can send to a website to share pictures with your friends and family. If you take pictures, especially digital, then you know how important it is to be able to edit. Whether you are a professional photographer or it is a hobby, you will want your pictures to be the best that they can be, right? Well, most photographers, novice and beginners alike, are not perfect. Therefore, they will not produce a perfect picture. The vast majority of the pictures taken will need to touched up in one way or another.

For best results using fill flash, try to have your subject in shade with lit areas behind it. The fill flash takes care of the shade, and helps balance the light level so the subject and the background are clear and proportionately bright. If your camera has a "slow synchronized flash" feature, this can be used to combine foreground and background elements in a way not otherwise possible (because of the short reach of small, built-in flashes). With the use of a tripod and relatively still subjects, good quality shots can be taken in otherwise difficult conditions, such as night shots or even shots on a moving platform. Longer shutter delays can produce blur effects similar to the "moving traffic" effects often seen in advertising, and with a little patient experimentation you can produce shots with a mid-range digital camera that rival expensive commercial art.

Memory Sticks are used only in Sony products, and Sony is serious about keeping the technology in use. Unfortunately it seems like no one else is. They're available up to 4 Gigabytes in capacity, have good speed, but if you're using a Memory stick, it's probably because you're using a Sony camera and you don't have a choice. The newest common storage media are xD-Picture cards. Developed by Olympus and Fuji as a replacement for the older Smart Media cards, xD cards are compact and durable, with a heftier shell than older designs. They are stable in the market and likely to be around for a while, but they are gaining neither market share nor size rapidly - currently the largest xD cards are 1 Gigabyte. This is probably because only Olympus and Fuji now use this standard. Wide and wafer-thin, Smart Media cards define "legacy technology." Available only as large as 128 Megabytes, this is one technology I would have expected to have been "voted off the island" by now. Alas, they were used in tens if not hundreds of millions of cameras and smart phones, so they are still being made and will be available for some time. You won't find them in any new cameras, however.


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