About Image Resolution
Resolution is the measurement of how many dots/pixels fit into one inch.
The higher resolution, the sharper the image will be. We require a resolution of at least 300 dpi (dots per inch) for crisp, clear results. Lower resolution images appear fuzzy, jagged and blurry.
CRISP - THIS WILL PRINT WELL
FUZZY - THIS WON'T PRINT WELL
Here's how to get images with good resolution from your digital camera
If you have not yet taken the digital image, adjust your camera to the highest quality setting.
Taking the photo on the highest setting will maximize both the quality of the image, as well as the range of sizes at which you will be able to use it in printing projects. If possible, save your image as a lossless TIF or EPS file before doing any editing to best preserve color and sharpness.
Determine the resolution and maximum usable dimensions for any images you want to use in your project. Images should have resolution of 300 dpi at their final size in the file. Resolution and image size are inversely proportional to each other. In other words, enlarging an image will decrease the resolution and shrinking an image will increase the resolution.
2 x 2" image @ 300 dpi = GOOD
...enlarged to 4 x 4" = 150 dpi = BAD
17 x 13" image @ 72 dpi = BAD
...reduced to 4 x 3" = 300 dpi = GOOD
To determine resolution from pixel dimensions, divide pixel width and height by 300 to determine the maximum size at which you will be able to use the image, while maintaining a quality resolution of 300 dpi.
Start with 1200 pixels x 1600 pixels as the dimensions for an image.
Divide 1200 ÷ 300 = 4, and 1600 ÷ 300 = 5.33.
So, the maximum usable dimensions for the image are 4 x 5.33". It will print crisp & clear at this size or smaller.
1. Images should be 300 dpi (dots per inch) at the final size in the layout (or at least 1 mb file size in jpeg format.
2. Resolution and image size are inversely proportional to each other. Enlarge an image, the resolution decreases; reduce an image, the resolution increases. Example: a 2 x 2" image at 300 dpi (acceptable) enlarged to 4 x 4" has a new resolution of 150 dpi (unacceptable).
3. Low resolution images print fuzzy, jagged and blurry.
4. The settings used during the original "capture" of an image (ie: scanning, digital camera, etc) determine its base resolution. Resolution can only be improved by decreasing the image size, or by recapturing the image at a higher quality setting.
5. Recommended minimum resolution for printing is 300 dpi; computer monitors generally have a display setting of 72 dpi. If we indicate that some of your images have low resolution, they may not look bad on your monitor but will likely print blurry or jagged.
Things to avoid:
1. Web images are predominately low resolution (72-96 dpi) GIF or JPEG files. This resolution is good for quick transmission over the internet, but is not acceptable for use in printing. Do not save images or graphics from a website to use in your print project!
2. Upsampling is when a low resolution image is saved to a higher resolution with no changes in dimensions. Upsampling adds more pixels/dots per inch (dpi), but creates blurry images, ugly blocks of color, and high contrast in images. The only way resolution can be improved is by decreasing the image size, or by recapturing the image at a higher quality setting.
If you have any questions, please don't hesitate to contact us at:
Thanks to our friends at PrintingForLess for all this useful information.