Adobe's turf, Adobe's rules. Other agencies accept what they accept. You need to be careful, when exposing something white in sunlight. It get's easily overexposed, even if you assume that the overall is well exposed. Using a reflector to get more light to your subject will allow you to shoot at higher f values, but generally, it's a matter of focussing well. When shooting moving animals, a lot of my shoots are simply out of focus, I tend to shoot many pictures, just to use a small amount of them. It's really not a problem, at the end of the day. My camera settings are all manual, except the autofocus., where I try to catch the eyes. Sharp lenses are an obvious advantage.