Integrating Images into Digital Studies
Identifying and making images an integral part of the digital study requires a few rules as well. In this ongoing series of articles on creating a digital philatelic study, we’ll look at how to make images play nice in our study.
Style
Images will be called ‘figures’ (Figure 1) and have a sequential number associated with them, starting with ’1′ for the first image. Again, keeping things simple, we’ll not use sub-figure details or sub-figure numbers.

Figure 1
Every image should have a caption (description of image), in the typeface and size determined in an earlier article. The exception to the rule might be an image on the title page. I personally like captions centered under images and no wider than the image. Will we have to reword captions to get that length? You bet! Should the caption be compromised due to word length – only if you want incomprehensible descriptions. Short, sweet and to the point is the objective.
Images showing specific details of a philatelic item should be included. As there’s no restriction on image size other than page size, it’s theoretically possible to have an image fill the page. In general, it’s better to have multiple enlarged images, each showing a different detail in a reasonable size. This method is preferred to a single image with multiple details called out which are so small it’s difficult to recognize what’s important.
Images may be in color, grayscale or black and white. Color images display in Red-Green-Blue (RGB) on standard computer screens and personal scanners default to that mode. We’ll stick with RGB as we won’t need this study printed professionally.
Image Resolution
Although I typically scan originals at 800 dpi, image resolution in this study will be 150 dpi. 150 dpi provides some ability to increase the on-screen magnification (zooming in) without breaking the bank for file size.
If resolution is less than 150 dpi, the image quickly becomes blurry as the viewer zooms in for a close-up. 150 dpi also provides better reproduction should viewers decide to print the study.
Incorporating images larger than 150 dpi is possible and produces better quality when zooming in or printing, however the overall file size increases quickly. Large file sizes equal slower loading speeds on the viewer’s computer screen and limits the ability to transfer them via e-mail.
Image Formats
Original images will be saved in a ‘tagged image file format’ (tiff or tif) for everything other than vector line art. The tif format produces better reproduction quality when printing and it can be converted to all other image formats that we may require, ie. ‘joint photographic experts group’ (jpeg or jpg), ‘graphics interchange format’ (gif) or ‘portable network graphics’ (png).
For display on the web, you may wish to use jpg format and that’s fine. Remember however, that jpg is mainly for displaying color photographs with many different colors and shades. It also compresses the image and reduces the final quality although for our purposes, it likely makes little difference in most cases.
The gif format is also frequently used as it is good at displaying line art, single color or multi-color images with few colors and shades, while also maintaining smaller file sizes.
Lastly, png is a newer format similar to jpg and employed occasionally for its ability to include transparency.

Gif image for graphics with few colors
Image format selection really boils down to the type of image you are using and the file size or level of quality you desire.
Image Borders
Images will have a 1 pixel border applied in black on all four sides to provide basic delineation from the page.
Clip Art
Don’t use clip art. Striving for a professional look is completely destroyed by including ‘cute’ cartoons or line art.
Special Effects
Shadows make images or text appear to hover above the page, effectively giving a 3 dimensional look by adding depth. This is a nice accent, but application of it will be limited to graphics.

Jpg image with shadow
No other special effects will be part of this study.
Using these guidelines, all of your images will look similar and the cohesiveness of the study will benefit. 





