So I use back button focus and love it but one problem. Since I use it I always leave it in AF-C but if I need the AF-assist illuminator to come on it has to be in AF-S with single point. So I switch it over to AF-S and set the focus and it makes me hold down both focus and shutter release button at the same time in order to take the picture. If I hold down the shutter by itself it won't take the image even though, that's the sole function of the shutter release button when using backbutton focus. I find this irritating. lol. I have the focus I want, don't want to refocus but i have to for each image. Any work around for this or am I not thinking of something obvious? ty...