1/20/2024 0 Comments Photoscape x pro review![]() ![]() pixels) however, DPI is used often in scanning and image processing software to refer to spatial resolution and this usage is an understandable convention." DPI is the appropriate term for describing printer resolution (actual dots vs. Since raster image files are composed of pixels, technically PPI is a more accurate term and is used in this document (one example in support of using the PPI term is that Adobe Photoshop software uses the pixels per inch terminology). Resolution is often referred to as dots per inch or DPI, in common usage the terms PPI and DPI are used interchangeably. "Spatial resolution is measured as pixels per inch or PPI, also pixels per millimeter or pixels per centimeter are used. ![]() Here's an interesting document (PDF format) from the US National Archives and Records Administration (and they should know) that says: ![]() We always tell the print shop or print software what size document we want them to produce for us. We digital photographers don't have an "original size". It seems that digital cameras didn't exist back then, or had such low resolution they were not very useful for archiving documents. ![]() It's important enough that DPI or PPI is included in several metadata standards (TIFF, JPEG, etc).ĪFAIK, TIFF is the first open-source image format to arise out of many proprietary formats from several scanner manufacturers. Archivists and librarians need to know the size of the original scan so they can create a faithful reproduction of the original which they can calculate by using DPI or PPI. The necessity for DPI or PPI seems to have come from the early days of 2-dimensional digital scans of cultural & historical documents in libraries/archives/museums (old journal pages, old illustrations, scraps of parchment, etc) for display on computer screens or for printing later. This is more than anyone in their right mind wants to know, but Jim has it right. page.Īs long as you have sufficient pixels in the image, regardless of the ppi setting in the image itself, then you shouldn't see unacceptable loss of image quality after stretching the image.įree your mind by purging all thoughts of DPI. Once the image is pasted into the Word doc., you can grab any of the image's boundary handles and "stretch" the image to whatever size you like within the Word doc's. The only thing that matters is the pixel dimensions of the image. When pasting an image into a Word document the PPI is totally irrelevant. Ĭan you please help in this matter with a solution to obtain the proper and correct requirements re dpi My next process is to transfer these pics by copying and pasting into a word document and I have found that when checking the word document the pics have not retained the 300dpi when checked again using PhotoScape. If you also resample the image then the new pixel dimensions will be 8000px x 6000px. In any case, you haven't specified if you resample the image when you alter the PPI.įor example, if you change the PPI setting from 150ppi to 300ppi on a 4000px x 3000px image without resampling, the pixel dimension will remain the same - 4000px x 3000px. PPI is used to set the media size you will print to. DPI is used to set the print quality on an inkjet printer. It's actually PPI (Pixels Per Inch) not DPI (Dots Per Inch). I have used PhotoScape X Pro to change the dpi to 300 from 150 dpi and then transferred these into a file for reference. ![]()
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