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Transparency Film
Image Transfer Technique using Transparency Film
The Basics of Scanning Film Negatives
If you are one of those with an abundance of film negatives and you have wanted an easy way to make digital images from them without going to a service, you may be aware that regular scanning is ineffective. Putting a film negative or a slide in a regular scanner results in a black digital image. However, there is a way to scan slides at home and produce fantastic digital images, sometimes even better than are provided professionally.
Many photo enthusiasts prefer to make digital images from negatives instead of prints. For one thing, prints are usually cropped from the negative. Scanning a negative will reproduce the entire image. Also, the negative will not have had any color correction or and will reproduce an unadulterated copy. The only difference with scanning negatives is that the colors must be inverted and the orange hue must be cast off. Many home scanners can accomplish this.
Most flatbed scanners operate by reflecting light off of images. The problem with negatives is that they are transparent and light passes through it instead of being reflected off of it. Many scanners either come with or have available to purchase an optional, box-like lid for transparencies or negatives. This lid provides light from above so the negative can be successfully scanned. For most, this option is suitable and works well but for other photo enthusiasts, it does not meet standards because they want an image that is not distorted by the intervening glass bed.
If the transparency adapter is not ideal, then a separate, specialized scanner must be purchased that is specifically made for scanning negatives and slides. These scanners produce significantly higher-quality images. A film scanner is also easily able to deal with the orange hue that is present with negatives. The exact color varies by film manufacturer. For example the orange of Kodak film is slightly different than that of Fuji film. Film scanners come with software that will automatically remove the coloring and it can be set manually or automatically by brand of film. The image will also automatically be inverted since the negative is a reverse-image. If you want to use a flatbed scanner, software for this purpose will have to be purchased. Some negative scanning software is very reliable and sells for less than $40.
Another consideration in scanning images is the maximum resolution of the scanner. Many older flatbed scanners work at only a 600 dpi resolution. This means that if you scan a one-inch square negative, the resulting digital image will be 600 x 600 pixels. When reproducing/printing a photo, you normally want it larger than one-inch square but enlarging the image reduces the number of dots per inch (dpi). By increasing the size to only 4 in. x 4 in., the quality is reduced to 150 dpi. If you are planning on using the images only for the web, this may be fine. If you want more professional images that can be enlarged, you will need significantly more resolution, with 1,200 dpi being the minimum.
For more information on scanning film negatives, visit http://www.pfe.com
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