Chapter 01 of 07
How a printer turns pixels into droplets of ink, how many pixels you really need, and which print sizes make sense.
Articles in this chapter
- 01.1
checked 12 October 20264 sourcesFine Art printing and inks
What Fine Art (giclée) printing means, how inkjet photo printing works, the difference between pigment and dye inks, and when Fine Art printing is worth it.
- 01.2
checked 12 October 2026technical basicsDPI, PPI and resolution for print
The difference between DPI and PPI, the exact formula for converting pixels to centimetres, a table of print sizes and the viewing-distance rule. Plus what upscaling can and cannot do.
- 01.3
checked 12 October 20261 sourcePhoto print sizes from A4 to 70 × 100 cm
ISO 216 paper sizes (A6 to A0) in millimetres, common photo print sizes from 10 × 15 to 70 × 100 cm, their aspect ratios, and how much has to be cropped from a camera or phone photograph.
In preparation
These topics are not covered yet. We will publish them once they have been checked.
- Enlarging small files: what interpolation can and cannot do
- Sharpening for print by size and paper
- Printing black-and-white photographs: neutral tone and toning