click here to view the intro click here to plan your poster you are here click here to review your poster design click here to learn how to print your poster click here to learn how to present your poster
click here to download the PDF manual click here to view other tips, tricks and lessons on YouTube click here to view other resources click here to contact us
click here to learn about composition and layout click here to learn about laying out text and fonts click here to learn about colours you are watching this chapter click here to learn about importing your graphs click here to summaries what you have learnt

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A picture, diagram or illustration can speak a thousand words - much more effectively than multiple paragraphs of text, but remember that poor quality visual imagery is often perceived as poor quality research. Likewise, Images without captions creates a poor impression.

See the tabs below for more information on the relevance of using clear images in your poster.

Pixels-per-inch - PPI is the term used for the resolution of your image as viewed from your computer screen. An square-inch of screen includes 72 closely packed horizontal pixels.

Dots-per-inch - DPI is the term used for the physical printing method of most domestic printers.

Note - When a digital image is printed, pixels are converted to dots. Dots have spaces between them so 300 pixels become 150 dots and spaces. 300ppi becomes roughly 150dpi.

150dpi is the accepted standard for printing photographic quality images.

resolution
Bitmap Images can be made smaller, but cannot be made larger without degrading the quality of the graphic so it's best to always create at a size larger then required.

Create your graphics or scan your images in at least 300ppi (to print out at 150dpi). The above image shows a low resolution screen grab printed at 150dpi, you can see the reduction in quality compared to the original 300ppi image.

If you're unsure of the dpi of your images, most image editing software allows you to check this feature under image properties.

JPG or JPEG is a compressed image format that works best on 'million colour' photographs. It can be compressed into a low file size while preserving much of the clarity.

GIF is a compressed image format that works best on 'limited to 256 colours' graphics.

PNG is a file format, that also saves information relating to areas of the image that are transparent (Alpha Channel).

TIF or TIFF is a lossless compression format where quality and resolution are paramount.

PSD is a Photoshop format that contains information about the various filters and effects within your image prior to compression.

When importing images into your poster you should check to see that the image resolution is 300 dots per inch. A common mistake is to take an image from the web that is only 72dpi, which looks fine on your computer monitor, but of course looks very poor in quality when used in print projects.

Images and photographs should only be used if they add interest to the display and complement the subject matter.

In the eyes of the visitor, poor quality pictures and graphs = poor quality research.

If using microscopic images, ensure that
scale information is provided.