I still tend set the resolution of my screen images to 72 ppi out of pure stubborn force of habit. To further flog the point, as long as you size an image for the screen based on pixel dimensions, the resolution in ppi can be anything you want. Pixel number, not resolution, determines size on screen.
We will take a closer look at how ppi and print size are related in a minute. 667”, while the 72 ppi image would print larger at 4.167” x 2.778”. In this case the 300 ppi image would print at 1” x. The only place where ppi makes a difference is in print output size. They both measure 300 x 200 pixels in size on the screen, both are 46.9 kb in file size and they both look identical. One was saved at 300 x 200 pixels at 72 ppi and the other was saved at 300 x 200 pixels at 300 ppi. If you don’t believe me, take a look at the images below. They both are constructed of 300 x 200 pixels. Furthermore, the file size for each will be the same. For example, a 300 x 200 pixel image at 72 ppi will appear the same size on screen as a 300 x 200 pixel image at 300 ppi. We often get caught up in creating 72 ppi resolution images for the screen, but in reality ppi (pixels per inch) only matters when it comes to print size. To reduce the size of an image on the screen, all that needs to be done is to reduce the number of pixels in the image. As the freakishly intelligent digital photography guru, Tim Grey, recently pointed out in his daily Q&A, when it comes to screen size the only thing that matters is pixel dimensions. Let us begin with sizing for screen output.Ī common misconception is that screen images must have a resolution of 72 ppi. The other type of sizing is for print output.
Second, it is important to wrap your mind around two different types of sizing and not allow the rules for one to bleed over into the rules for the other. After the duplicate has served its purpose, it can either be saved with a different file name or deleted, but the master remains at it’s original size. When I’m ready to output the image I create a duplicate of the master and I size the duplicate. They remain, forever, the size at which they emerged from my camera (unless I do creative cropping). I never change the size of my master image files. First, if you aren’t already, you should maintain sized output image files separate from your master image files. Let us begin by setting a couple of things straight.
While you can never really go back, the following information may help you keep your head above water…and hopefully keep you from mixing your metaphors. You have peered around the other side of the curtain. However, if you have already gone down the road of using Photoshop to size images for different uses you are already in too deep.
#TOPAZ DETAIL VS FOCALBLADE HOW TO#
If you are having no problems uploading your images to an online printing service (Picasa or Mpix for example) and allowing them to figure out how to generate different size prints from whatever you give them, don’t break what isn’t broken.
#TOPAZ DETAIL VS FOCALBLADE SOFTWARE#
If you are quite happy using the basic software that came with your camera to automatically size images for email or upload them to Facebook, then stick with that. Sizing for print and sizing for screen are two different beasts.īefore you read any further, if you are a recreational photographer who isn’t concerned with optimal image output, you should maintain your blissful state of mind and avoid reading this article at all cost.
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