Editing Pixel density (section)

=== Calculating PPI of camera view screens ===
Camera manufacturers often quote view screens in 'number of dots'.  This is not the same as the number of pixels, because there are 3 'dots' per pixel – red, green and blue. For example, the Canon 50D is quoted as having 920,000&nbsp;dots.<ref>[http://www.dpreview.com/reviews/canoneos50d/ dpreview.com, Canon EOS 50d]</ref>  This translates as 307,200&nbsp;pixels (×3 = 921,600&nbsp;dots).  Thus the screen is 640×480 pixels.<ref>[https://techcrunch.com/2010/07/21/a-quick-psa-on-dots-versus-pixels-in-lcds/ Techcrunch.com, dots vs pixels]</ref>

This must be taken into account when working out the PPI. 'Dots' and 'pixels' are often confused in reviews and specs when viewing information about digital cameras specifically.