dslater
Member
Not wanting to get into an argument, but an auto-focus system has absolutely nothing to do with composition, nor whatever image management is??
If you are photographing a grey sea with a grey sky, yes turn it off, but at least he has the option.
Not exactly true - because the AF sensors are at fixed points in the viewfinder, there is a tendency to place the subject on one of these points when a position between sensors may produce a better composition.
The problem with the idea that you can simply turn off the AF and focus manually is that except for the most expensive pro cameras, AF cameras do not have a split-image focusing screen which makes manual focus difficult. An MF camera is usually much easier to focus manually than an AF camera.
Fortunately AF cameras are quite popular and used MF cameras can be had quite cheaply, so having both kinds of camera body is usually affordable.