Downloading Images for Slide Preparation

Producing high quality slides from digital images can be intimidating, even for the experienced computer user. The goal is to transfer the electronic image to a film recorder, which is an expensive instrument usually found in your institution's photography or computer services department. The resulting exposures are then mounted as traditional 35-mm slides. Unfortunately, the sheer variety of equipment and software used for this effort will usually require some manipulation of the digital image to ensure compatibility. Here are some suggestions to make this process easier.

Save the File Locally

Review the thumbnails and larger versions to determine from which images you wish to create a slide. Download the desired image using the high-resolution graphic files provided at "Download slide-quality image." To ensure a high-quality slide, you must use these files; the low-resolution thumbnails or larger versions will not create a clear slide and are provided for on-screen viewing only.

To download a graphic file, use your mouse to right-click on the text link. Scroll down to "Save Link As" and specify where the graphic files should be saved locally.

If you prefer, you may open the high-quality image file in your browser by clicking the left mouse button and then use the "File-->Save As" command from your browser's toolbar to save the file locally. If you use this method, please be aware that your download times will be increased because you will need to wait for the image to load within your browser window and then save it locally.

Because of the high resolution, these files may be quite large. Please use the file sizes given next to the text link to estimate the amount of disk space required to save all desired images and the length of download time.

Take the File to a Service Agency

You may avoid considerable frustration if you consult with your institution's photography or computer services department before proceeding further. All images in the Atlas exist as JPEG files, an image format developed by the Joint Picture Experts Group. The use of this widely accepted format facilitates the transfer of images among many different computers and operating systems. Your photography or computer services personnel may be able to use the downloaded JPEG files without any additional work on your part. If this is the situation, simply follow their recommendations on how best to send them the files. Usually this will require a floppy disk for smaller images or other removable media (e.g., ZIP or SuperDisk) for larger files. With cooperation, network transfers also may be possible.

If your services department cannot deal directly with the JPEG files, you will need to prepare each slide on your own computer for eventual transfer to the film recorder. Departmental personnel should be able to recommend presentation or image manipulation software that their equipment will recognize. These might include Microsoft Powerpoint, Corel Presentations, or Harvard Graphics. You will need to lay out each slide by importing the appropriate JPEG image, and the details of this process will differ among the various packages. Be sure to set your software to the proper aspect ratio. The width-to-height of 35-mm slides is three-to-two, and most presentation packages include a slide format with the proper proportions. Once your presentation is complete and saved, the resulting file can be sent to photography or computer services by one of the means discussed above.

Image software may offer you the opportunity to reduce the size of your image, perhaps by converting to an alternative format or by decreasing the number of colors. Such options should be avoided, because they may also reduce the resolution of the image and produce a slide of lower fidelity.

Copyright  1998 by the National Kidney Foundation, Inc.

Home | Help | Feedback | Subscription | Archive | Search | Atlas Home
Home Help Feedback Subscriptions Archive Search Atlas Home