I wouldn't spend the money on that meter, it will not give you substantially different results. I use a handheld spot meter, which allows me to more precisely determine the exposure and developing time via the Zone System. Your camera has built in spotmetering if you know how to do that, so I probably wouldn't bother with a handheld at all. My cameras are mostly ones that do not have built in spotmeters, though with my Olympus OM-4T, I do not use a handheld meter either.