photoshop for mac how to increase jpg resolustion

Of course, you can try and 'cheat' by telling Photoshop to do both. If you double the image size, the resolution halves because the pixels are spread further apart. By decreasing the size of the image, the existing pixels have been squashed closer together, hence increasing the resolution. Because you have a finite number of pixels that have been captured by the camera (or scanner). The height also halves (to 1.5') and the resolution doubles (to 144dpi). Halve the width from 5' to 2.5' - what else happens? Let's say you've got an image 5' x 3' at 72dpi. Click the checkmarks OFF in the two boxes marked 'Constrain Proportions' and 'Resample Image'. You can do one or the other but not both. Although I am surprised your graphic artist sister doesn't understand this - perhaps she hasn't had much experience with print work? However, if she is going to have more clients who want work printed, she really needs to understand why you cannot upsample AND upsize a digital pic. Perhaps what you don't understand is why. As other responsees have sugested, reshooting the picture at a higher resolution is the only way you will be able to both increase the resolution and dimensions. Increasing the DPI appears to do so more dramatically than it does, but only because the size of the image on 'screen' is being increased so the monitor can accurately show that resolution. Itll be enlarging thats casuing the detail loss to answer your other question. Saying that, it can be dependant on how the image is to printed, and how far away the viewer's eyes will be from the subject. The sharpen tools work but cannot unfortunately perform significant improvements. One method that sometimes works but is dependant on detail, is by resizing little by little, but given that she wants to enlarge AND increase the DPI I think the easiest method is to reshoot the picture. Well I would say that there is not really anything significant her client can do, apart from retaking the picture at a higher resolution. Does anyone have any ideas? Any help is much appreciated. I asked her if it was increasing the dpi that's causing the poor quality or if it's the enlarging that's doing it, and she wasn't sure. When she tries to do it, the image quality declines dramatically. She needs to both enlarge it, and increase the dpi to somewhere around 300 (so that the image can be printed). Her client has taken a picture with a digital camera and saved it to a disk (it's a jpg). This is a question for my sister who is a graphic artist. Images in Photoshop can vary from high resolution (300 ppi or higher) to low resolution (72 ppi or 96 ppi). An image with a high resolution has more pixels (and therefore a larger file size) than an image of the same dimensions with a low resolution.

Photoshop for mac how to increase jpg resolustion