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Enlarger Lens
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Photo enlargements are online tools or services used to enlarge digital pictures, paintings, wallpapers, and drawings up to the poster size without pixilation loss. These tools include all the sub tools required for image editing such as resizing photo, cropping, adjusting colors, setting background and foreground colors, stretching, red eye removal, rotation, flipping etc. You can also apply some visual effects such as contrast, brightness, mid tone adjustment etc. So, there is no need to spend large amount of money on gallery printing. Now, there are numerous websites which are providing online picture editing and publishing services. Using these services you can easily create your online thumbnail photo gallery.

These tools are very easy to use even for beginners. You can customize your gallery photos with high quality. Almost all popular image formats are supported by these tools including JPEG, GIF, BMP, PSD etc. It is good to have your picture in JPEG format because almost all websites support this popular picture format.

As far as digital technology is concerned, sometimes digital cameras does not provide you perfect color. In fact, it gives true color only 50% of the time. So, Digital photo enlargements can play an important role in correcting the colors of digital pictures. Color corrector knows only three basic colors which are Red, Blue and Green. The rest of the colors are formed automatically according to the calculation based on these colors.

Some websites also provide facility to sell your art online by giving space for your gallery prints. Just scan your painting or art in your computer, register yourself to any site, edit pictures using different tools and create your gallery prints. For each product you sell, the website will take some percent or commission and you will be paid through http://www.paypal.com. So, it is necessary to choose the best photo enlarger to resize your painting to the poster size without loss of quality.

It is recommended to set the highest resolution of the image before submitting to any gallery because 99% of the images cause problems while printing to the poster size. You must edit their size and color using any online photo enlarger before publishing it in your shop. Picture dpi should be set to at least 200 so that you can use the highest efficiency of picture enlargement tools. Some websites provides free facility and some take nominal charges for their services. You only need to register to any website providing photo enlargement facilities and you can start using their service. If you want to try a service in the internet without registration the best website is the reshade website.

Alex D. is an expert on photography techniques with http://reshade.com - The firm is specialized in online image resizing programs and makes available a free online picture resizer tool. It's also possible to get a photo resizing software program for Windows. Try it out now!

The Smart Way to Make Photo Enlargements

The market for digital cameras is evolving very fast. Even if you tried to keep up with the highest resolution, unless you are willing to invest in a new camera every six-twelve months you would find that impossible. However, some people buy a digital camera mainly because they want to enlarge their photos and the resolution is therefore very important.

Luckily there is a different way of achieving this, one that will keep you satisfied for many years. With an investment of under 1,000 U.S. dollars, you can purchase a used 4x5'' film camera and a high-resolution flatbed film scanner. This way you've got more than one hundred mega pixels in high-detail film, which you can enlarge to 30x40'' keeping the same quality. This technique has been successfully used for nearly on hundred years in both personal and commercial photography like wedding photos, portraits, documentary, landscape and advertising.

But where can you buy a used 4x5'' film camera? As these cameras have been widely used before 1960s, they can be easily found on U.S. auction websites. A good camera with lens can generally be purchased for no more than four hundred dollars. With flatbed film scanners is even easier. You can find a brand new one for less than five hundred dollars. All you have to do is make sure it can scan films.

There are a few features you should look for when buying such a camera: it has flexible bellows, it can be folded into a compact box, it accepts sheet film, the lenses are interchangeable, it has a ground glass focusing screen, it has an optical viewfinder accessory and it can be easily handheld. There are four main categories of lenses: general-purpose, wide field - generally used in landscape and close-ups, extreme wide angle and special effects. However, for most photographs all you need is a general purpose 127x152mm lens. If you want to take macro and architecture photos, you can buy a special lens manufactured after World War II. They have excellent performance compared to today's cameras. Lenses can also be found on auction websites. When buying an old 4x5'' camera, make sure that: there are no light leaks in the bellows; there are no scratches or fungus on the lens; the lens shutter works fine at all speeds; the focus works good between the film and the ground glass.

Using a 4x5'' film camera coupled with a flatbed film scanner for enlarging photos is a viable and affordable option. A 4x5'' film camera is cheaper and usually offers better quality than top digital camera models. If you want even more detailed enlargements, you can always opt for an 8x10'' film camera. This offers four times wider film size and is though of as the ultimate step in photo enlargement. Analog product can sometimes work better than their digital counterparts. If you're doing photo enlargements a lot, you should try a 4x5'' film camera. You may be surprised of the results you can get with it.

About the Author

Alex Don has been writing in the field of image resizing at reshade.com. The business works in the field of online image resizing and provides an
online photo resizer application
. And also it makes available a
image enlargement
windows program.

Geometrical optics (lenses)?

A camera has a lens (or a combination of lenses) like the converging lenses that focus light from objects into real images on a piece of film. An enlarger shines light through a negative, and uses a lens to project a real image of the picture on the negative onto the platform where the photographic paper is placed. Explain how each of the following will affect your photographs.

(a) Half of the lens on your camera is covered by a piece of paper.

(b) The negative is placed in the enlarger with half of it covered by a piece of tape on the inside.

(c) Half of the lens on the enlarger is covered by a piece of paper.

(d) The camera lens is replaced by a diverging lens with the same focal length.

(a)♦ half of positive photograph should be black;
(b)♠ half of positive photograph should be white;
(c)♠ half of positive photograph should be white;
(d)♣ the positive photograph should look blurred;

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