It use Blender internal render, that have lens flare, to bad cycles doesn't support it :(

very easy, in the compositor add a glare node and switch it to ghosts(i always make sure that i have a shadeless mesh on a different render layer somewhere in the scene were the sun might be, so in my scene i have a shadeless uv sphere directly in front of the sun, and as you can see thats were the lens flare is coming from) thats pretty much it. hope this helps, i hope it didn't sound to complicated.

also i forgot to add, in the glare node turn threshold all the way down to 0 otherwise it wont work

thank you lukethsdhafdf i got it thank you very much for help.

do you know how to get the chromatic aberration effect that effect really makes it stand out thank you for help once again

are you talking about the vignette? thats done by adding a lens distortion, and turning up distortion all the way to 1, then adding a math node and switching it to greater than, then add a blur node switch it to fast gaussian, relative, x, and 20% for both y and x, now add a mix node and switch it to multiply and mix it with the scene done.

my computer crashed 50+ times while making this

thats weird, try moving the sun flare to a different render layer