What resolution do you need to print continuous tone, high resolution banners or prints from Photoshop files or other raster based programs?
For banners, the ideal image resolution is for 50 dpi at final print size. We can certainly use smaller files, but you risk seeing the pixels (the squares) in your graphic. This translates into just over one meg per square foot of banner. The common banner sizes below illustrate this concept: 2×3 ft banner = 6 meg 3×6 ft banner = 18 meg 4×8 ft banner = 48 meg 6×12 ft banner = 72 meg For banners larger than the above, (and the greater viewing distance), a smaller dpi can be used. For photoluster, photogloss, and photomatte where the viewing distance is likely to be much closer, 150 dpi at full scale is optimal. This translates into 10 meg per square foot.
