My 530 Super works great with the K20D, never had a problem & the line of sight is very large as I can shoot around corners etc and still get a remote flash

I read my manual about once every couple of months, always manage to find something I didn't know or a shortcut I didn't know was there. Didn't even know I could hold the ok button and move the thumb wheel to change ISO. Here I was going through the FN menu like a sucker