In message of 31 Jul, Clive Bonsall <cbonsall@xxxxxxx> wrote: > This is not specifically ArtWorks related, but members of this group may > be well placed to supply an answer to my question ... > > I have a digital photo taken with a Canon EOS 350D camera (8 > mega-pixels, I think). The photo was taken in high quality mode. To any > bitmap editing software I've tried, the image size appears as 2048 x > 1536 pixels, and the Image DPI as 72 pixels/inch. The file size is 9 MB. > > To my eyes this is quite a high resolution image. Can it really be just > 72 DPI -- or am I misunderstanding the relationship between resolution > and DPI? Screen pixels per inch is not the same as printer dots per inch. Screens display at around 72 dots per inch: on LCD screens they have a known number of dots and you can measure the width in inches and suitably divide. So my screen displays at 88 dots per inch. The above image of yours will occupy a screen 23 inches wide at this display resolution. Printer dots are much smaller than screen pixels and typically printing is done at 300 dots per inch, though professional printing will be around 2,000 dots per inch. I normally print at 600 as this is what my printer will do at full colour resolution. So your above image will be 3.4 inches wide on my printer if my software sends it to the printer at one pixel per dot. Usually of course you arrange (enlarge or reduce) your images on a graphics processing package, Art Works for instance and to bring this on topic, so that they occupy suitable amounts of an A4 page. -- Tim Powys-Lybbe tim@xxxxxxxxx For a miscellany of bygones: http://powys.org/ ------------------------------------------------------------ To change, suspend or cancel your subscription go to //www.freelists.org/list/artworks ------------------------------------------------------------