On Monday, 10 Apr 2017 at 16:51, Eduardo Mercovich wrote: > Hi Marvin. > >> I also agree that in terms of resolution (pix per inch ) pdf and >> jpg are the same. However, pdf (and SVG) allow the image to be >> scaled with little loss in image quality. > > Sorry to disagree, but again, pdf images can be vector (like svg) > and infinitely scaled or raster (bitmap, as a jpg) and in this > case the quality is on the file. The pdf format only adds and > envelope around the original jpg image, or in the conversion it > can be downscaled.
Totally correct. And, further, pixels per inch (i.e. resolution) is a property of an output (e.g. printer or screen) or input device (e.g. camera sensor), not an inherent property of the bitmap image. A bitmap file simply has a size which can be expressed as pixels x pixels. If you display an image on a high resolution screen (without scaling) it will appear smaller than if you display it on a lower resolution screen. -- : Eric S Fraga (0xFFFCF67D), Emacs 26.0.50, Org release_9.0.5-385-g72fc2d
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