just out of curiosity i tried my tamron 17mm hood on my pentax fa 20mm and it fits. i am assuming that the fa 24mm f2 is the same size so therefore it would fit too. i now mount a b+w 82mm polariser in the hood permanetly well it means one less polariser to carry. also as the 20mm only comes with a screw in hood i like being able to use the polariser and a hood
