Did you know that depth of field maps are present in certain Source games by default, such as Half-Life 2 (2004)? By using a console command 'r_depthoverlay 1', your in-game view changes to 'depthmap view', or how Valve likes to call it: a depthbuffer. Not all Source games contain depth of field information (like Left 4 Dead for instance) and so far I have only gotten it to work in Half-Life 2. There is some interesting information on the Valve Developer Wiki about this topic, yet I must say the information remains highly technical. It would take me quite some time to decipher everything that is on offer on the Wiki. Luckily, I don't have to decipher anything, as much of this information is obsolete (at least in my eyes if you take the purposes I use depthmaps for into account, as depth of field maps are implemented by default in the Source Filmmaker. So, in a nutshell, what is the Source Filmmaker? First I'd like to give a bit of context of Source machinima-m...