Digital Imaging for print

Joint picture encoding group (JPEG) Is a popular file format because you can send it without losing file quality it can also be compressed into small files. Its pretty ideal for both printing and web usages as it can load up pretty quickly and still have good quality however it is not the best quality.  The JPEG standard (ISO/IEC10918) was created in 1992.

Photo shops quality is the best quality that can be used in photoshop. It will print out the best quality you can get. However it will only work in photo shop or some adobe softwares. Photoshops file doesn't compress down as it's only made to be used in photo shop. Gif is very popular for web which stands for (graphic interchange file) it is good to use on web but not good for photographs or for text. It can have a transparent background another problem with gifs are that the filters do not work. PDF made by adobe which stands for (Portable document file) can't be used in print, it saves layers and can be compressed it's not as popular. PDF allows you to save and PDF file like work up onto photoshop. if it's saved as 70 framers per dot and opened with 300 frames per dot it will not lose quality. PNG is the new one meaning (portable network graphic) just like a gif it compresses the file and makes it really small. It also has a transparent background with better quality. It's great for the web but not that good for print. TIF is one of the oldest file format meaning (tagged interchange format) it is one of the best files to use in a print company. Eps is the most popular for print meaning (ENCAPSULATED POST SCRIPTED FORMAT) the best quality for print you can save an image as 72 dots per inch but can be sent at 300 dots. It's got half time details and can be sent from a computer straight to a printer and can be printed out exactly the same. ADOBE ILLUSTRATOR OWN FOTMAT Can be used only SVG if designed in illustrator meaning (Scalable Vector Graphic) meaning the file can be zoomed in and out and it won't lose quality, it's not good for tone or text but it's good for graphic. CODEC makes pictures smaller and when it's opened up in email it makes it bigger again.





Optimum resolution the quality of the image.

In printing DP(dots per inch) 72dpi matches the number of dots per every inch on monitors. However when in print it has to have 300 dots per inch which balances in between quality and the file size. Optimum resolution means the best quality which is the max of 4k on monitors.

Mega pixel means thousands of pixels.
5MP= 10cm x 15cm
12mp= A4
18mp= A3


⚫ Dot
⭘ Pixels

2 places in digital imaging that work with colour for printing and on screen

The current highest screen resolution is 4k or exactly 4096mp per inch.

There are seven colours of light in imaging which are the colours of a rainbow red,orange,yellow,green, blue,indigo and violet,which when mixed together makes white. However our brain can pick out the RGB colours mostly which are red,green and blue. These three colours can reproduce a broad variety of colours when they are mixed. RGB colours are made for screen images.








There are up to 256 shades of each colour going from black to white.

The colours used for printing are CMYK which stands from: Cyan, Megenta, Yellow, and K-black.  CMYK colours are used fro printing. It is made from four colours and is also used for describing the printing process.

Gamut warning on photoshop means the range of colours that a colour device can display or print out. A colour that is showed on you monitor in RGB might not be printable in gamut of your CMYK printer. For example the blue that comes on the monitor prints as a purple.


Amount of colurs that can be used = colours pace