I bough them direct from photobert ? To be honest you dont really need them, however becuase they are laminated they tend to last longer than you manual, and if you forget a CF the laminated sheet is very handy. The flash gun ones are handy to have and i think you get a deal if you buy them all together. I have the cheat sheet for my D2hs. There not bad for the money but you could type your own up.