Film Guide Buyer's Scanners



Film scanners are made for the sole and express scanning film for purposes directly into your computer. Unlike their desktop counterparts, which may be able to deal with the media in various sizes and thicknesses and can even film scanning a transparency adapter is installed, film scanners digitize one thing: the film. But because the image to be scanned is taken directly from the original material - film, not a copy - film scanners allow more direct control of the image elements, such as the relationship and cut appearance. In addition, the film has more detail and dynamic range compared to the impressions - who have lost data invariably range of tones and colors during the burning process. These are real concerns for photographers and graphic artists that are based on original slides and films - and film scanners - to ensure the integrity of scanned images in professional and commercial applications. So if your work is based on scanning negatives, slides and other types of films, a film scanner is the right choice for you.

The style and type

Some flatbed scanners include an adapter for external or internal transparency that is used to scan film. Other trucks are a double design; that is, a bed - the glass table of the scanner --for scan impressions; and another bed - transparency of the bay that looks like a pull-out drawer - for film scanning. If you want to scan only the occasional mecha slide or film, and do not mind the lower resolution and a flatbed scanner that can accommodate the film could well serve your purpose. For best results, nothing short of a dedicated film scanner will.

Bit depth

The bit depth of a scanner determines the number of bits captured per pixel, which is related to the number of possible colors. More bit depth, the greater the number of colors that can be displayed. Bit depth for film scanners on the market today can be 30 bits, 36 bits, 42 bits or 48 bits. A 48-bit scanner, for example, produces 65,536 levels or shades of color of R, G, B (red, green, blue) channel, resulting in a possible combination of blisters around 250 trillion colors. In contrast, a 36-bit scanner produces 4096 levels of information or 68.7000 million colors relay.

Resolution

For scanners, optical, or "true", the resolution is what is important, as the actual number of pixels being read by the optical scanner.
Film scanners have a much higher number of resolution compared to trucks with optical resolution film scanners from 2700 dpi to 5400 dpi and 4000 dpi, being the most common. The high-resolution film scanners allows you to enlarge small images, creating enough pixels in the process of printing a full page size.

For example, a 35mm full frame color negative scanned at 2400 dpi will result in a size of around 3400 x 2200 pixels. If it 2400dpi prints at 300 dpi, the resulting image will be printed 8 times larger than the size of the original film (2400/300 = 8). A word of warning: Because film scanners can verify these high resolutions, file sizes can be large. Scanning 35 mm negatives at 2400 dpi in the example just mentioned will result in a file size of 22 megabytes.

Film formats

Most film scanners work with 35mm film. Some can scan APS film, but an optional APS adapter is required for the batch scanning the complete APS roll. Other film scanners such as Microtek 120tf ArtixScan can scan a medium format film, from 6x6cm 6x17cm insight. Check what types of film holders are included with the film scanner; Most models include a slide holder 35mm and a 35mm filmstrip holder. Some models offer optional autofeeders which seats 50 mounted blades to allow efficient scanning batches of films.

Interface

The material of your film scanner interface will determine how long it takes to transfer digital data to a computer for processing. Together with the scanner of the actual operating speed, the hardware interface plays an important role in determining the scan speed. Most older films scanners have SCSI ports; the latest film scanners have FireWire or USB (Hi-Speed ​​USB 1.1 or) interfaces.


Dynamic range

The dynamic range of a range of scanner measures how well it can capture the tonal range of an image, from the brightest highlights to the darkest shadows. The dynamic range is more important specification for film scanners and carriers because the film and other transparent materials have a wider range of tones compared to photos or images - something film scanners are perfectly equipped to capture and show. Dynamic range is measured on a scale from 0.0 (perfect white) to 4.0 (perfect black), and the unique number associated with a scanner indicates how the range can be distinguished. If a scanner Dmin was 0.2 and its Dmax was 4.2, while its dynamic range would be 4.0. The most practical way to assess would be to visually check how light and shadow are played by the scanner and compare the results with the original image or the way other scanners reproduce these same tones color.

Removing dust and scratch-resistant, repair Film

The software provided with film scanners can be specialized and varied. As flatbeds, film scanners include your own driver or scanning software, and add an image editing program - such as Adobe Photoshop - in which the scanned images are delivered and placed. In addition, more sophisticated film scanners may include a calibration program profiler color and ICC, which ensures a uniform color by creating a profile for color film scanner. With the ICC program, an image - known as an IT8 target and containing standard color values ​​of the industry - is scanned and compared with the values ​​that the scanner actually recorded. Dust and scratches on the film can present a major challenge for film scanners, as imperfections can assume gigantic proportions when the film is scanned at high resolution scanner.
 
Other technologies

Depending on the model, film scanners can incorporate unique and exclusive proprietary technologies to its manufacturer. These technologies may include an auto-focus mechanism to ensure the perfect image capture, an exclusive feed mechanism or supports specially designed to make the film become flat.

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