Problem with the adapters is there is an input lag, dunno about the ps4 but the ps3 had one. Didnt work very well at all.

Just keep at it and you will get better, as above i had same probs but you do just get used to it

I've just read about the new XIM4 that is coming on 1 august this year. It's a bit more expensive but I think I will give it a try.

http://xim4.com/community/index.php?topic=29121.0

if your going to play with a mouse and keyboard why not just play it on the pc

cause Destiny Beta isn't available on PC?

i thought it was

but anyways he likes playing fps in general while using mouse and keyboard

yes its true i rly prefer PC, but I am w8ing for this game so long and from the beta I like it very much

+ I can always switch to controller but its goot to have the option for mouse + keyboard

I switched from Xbox 360 to PS4 and I felt just like you, couldn't get the hang of it for a while, but as the others have stated, keep practicing and get used to it.

Practice makes perfect!