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| For flatwork and duplication, please consider that the quality of the original will, to a great degree, determine the quality of the product you receive. Graphs, charts, illustrations, and photographs found in journals or other publications were not designed to meet media standards for exchange. In their printed form they may not be suitable originals for slides in terms of legibility and technical quality. Computer-generated originals are not acceptable for all types of slides and prints unless a quality laser printer is used for output. If you anticipate creating original materials yourself, it would be helpful to consult with our graphics and photography staff, and request more information regarding original artwork and media standards for exchange. |
Types of slides available include the following:
(Click on an image to see a larger version.)
| High
Contrast Black and White Negative -White line or type against a black background -Produced from original line artwork that has been typeset or laser printed |
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| High
Contrast Black and White Positive -Black line or type against clear background (original artwork) |
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| Continuous Tone Black and White
Positive -Complete tonal range and positive black and white image -Good if originals are black and white photos, or half-tone prints in publication |
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| Color Positive -Normally used to reproduce color in the original, but may be used with filters to add a color tint to black and white originals |
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| High Contrast Color
Negative -Color line or text against black background -Produced from black and white originals |
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| Burn-in (Diazo) -White line or text against a color background -Use an inter-negative step and color transparency film, instead of true Diazo materials, which will fade with usage -Allows for a greater selection of backgrounds, including natural images, solid or textured colors, or custom backgrounds designed specifically for you -High quality black and white linework required to produce acceptable burn-ins |
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| Composite Color Positive -Used to combine images from more than one slide -Good to use when comparison and contrast of two or more images is helpful -May also be used to add photo inserts to text or graphic information |
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