All the Tones!

So were in a photoshop workshop ... pffft I hear you say, easyyyy!  Yes, your rite ... however what I learnt today about CMYK will help me in this industry for years too come! 

Photoshop ... you never cease to amaze me!

Above - This is the single colour process called Monotone.  Using tints from a select colour can give you great images even without the use of the full CMYK range.  

Above - Duotone image.  This is made of two colours you choose after going through the greyscale options. A lot of advertisements and publications use duotone.

Above - The options given while producing monotone, duotone and tritone images.  The box open closest allows you to change the curve (the amount of colour selected going into each area) 

Above - Tritone.  This is using the range of 3 colours as shown above, the next step would be full colour.

Above - Finally you come too full colour, this is using the full range of CMYK (Cyan, Magenta, Yellow, Black)