Hello WDC forum,
I have just registered. I am fairly new to DSLR photography, around 18 months or so, but am picking it up bit by bit. There are still lots of niggling questions I have and so I might use this forum to try and get some answered. One concerns the zoom lenses of some third party manufacturers. I see that they often have maximum apertures at their longest focal lengths of f/6.3 and I also know that my camera is only supposed to autofocus reliably down to f/5.6. Does this mean that if I bought one of these lenses I would lose autofocus at any zoom length that took the aperture below f/5.6?
Many thanks for any help.