Scan at 600 dpi, print at 300 dpi, for 600/300 = 2X size (double size or 200% size) Scan at 300 dpi, print at 300 dpi, for 300/300 = 1X size (original size or 100% size) Scan at 150 dpi, print at 300 dpi, for 150/300 = 1/2X size (half size or 50% size) Film is small, and needs more enlargement. Prints have already been enlarged.
There are infinite depths to this question, but for most users all you need to know is the old convention: use 300 ppi. And for larger prints I also use the resolution [PPI] = 9000 / viewing distance [cm] rule of thumb. So 300 PPI is fine for 30 cm distance, 150 PPI is fine for 60 cm distance and so on. – Wolff.
Graphic content. Depending on the amount of detail that your graphic file has, we recommend increasing the image resolution to 600 dpi to allow for the very fine details to be optimally engraved. This will ensure that the laser engraved image does not lose clarity, despite the “dot bleed” described above.
This image is 800 pixels wide, and has a pixel density (DPI) of 72. I have the rulers set to inches, so 800 ÷ 72 = 11.11 which is reflected in the ruler. The image will print at 11 inches with these settings. However 72DPI would not make a good print, and we tend to think of 300DPI as optimum. So if I change the DPI to 300, but uncheck
Available Print Resolutions - 203 dpi/8 dots per mm, 300 dpi/12 dots per mm; Maximum Print Speed - 12 in./305 mm per second (203 dpi), 8 in./203 mm per second (300 dpi) Durable all metal frame and metal enclosure
. 173 147 130 150 287 297 35 261
200 dpi vs 300 dpi
