The viewing distance is not only an important criterion when buying a new television. When determining the required print data resolution, it can also be helpful to include the viewing distance in the considerations.
THE SCREEN DIAGONAL AS THE MEASURE OF ALL THINGS?
The optimal viewing distance for print products is normally the image diagonal of the end format.
A banner with a diagonal of 3.5 m is normally viewed from a distance of at least 3.5 m - otherwise you cannot see it as a whole. Accordingly, the resolution of the image data does not have to be as high as with a small photo that is viewed from a few centimeters away.
Exceptions confirm the rule, of course: Even a 5×3 m print must be high-resolution if it is to be printed, for example. B. hangs at a trade fair and visitors should walk past it and see details. Wall wallpaper, prints for display systems or for interior design applications must also be printed in the highest possible resolution.
If possible, logos and text should always be used as vector data. So you are independent of pixel resolutions and have a razor-sharp reproduction in every scaling.
The detailed reproduction of many printers has been improved again in recent years - so high- or very high-resolution data makes sense in many cases. Increasing customer demands are also promoting the trend towards more and more detail and large amounts of data.
Which resolution is suitable?
The table below shows how image diagonal, ppi number and file size can be meaningfully related. Trade fair applications such as pop-up walls or roll-up banners are high end classified, since one can assume a close viewing distance here. If print data for the large format is created scaled, the resolution must of course be increased accordingly.
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