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This seems very handy – however the reference image would be infinitely easier to print on the correct size if it was a PDF file. PNG image format does not reta
by peterhil 5y ago
This seems very handy – however the reference image would be infinitely easier to print on the correct size if it was a PDF file. PNG image format does not retain the resolution IIRC.
- peterhil 5y agoFor anybody wondering – the correct DPI is about 508 for some reason.
- tingle 5y ago508 pixels/inch = 200 pixels/cm, exactly. The resolution unit in PNG is either the meter, or it is unspecified. 1 inch = 25.4 mm, 25.4 * 2 = 50.8. 508 is close enough to 600, and 600 dpi is a resolution commonly found in desktop printers. If you've worked with PNG files under Photoshop, you may have noticed that a picture saved with exactly 72 dpi has 72.009 dpi when you close it and open it again. Using an integer multiple of 254 for the dpi prevents such a drift.
- Gracana 5y agoIt's a nice round metric measurement. 508 dots per inch = 20 dots per mm.
- peterhil 5y agoWith a PDF file you can also make the image crop box be exactly the reference image area, add crop marks and put the CC note and other info possibly inside or outside the crop area.