Most DSLR shooters need either autofocus lock, or the ability to move focus to a separate button while shooting. On Canon bodies, this functionality ends up being tied to the "*" button (and optionally, the button just to the left of that button on the 1D/1Ds).
The UK Germany D60 housing is small enough that one can grip the side of the housing and hit both the shutter release and that button at the same time (making the right-hand handle useless for those of us who shoot this way), and the Sea & Sea housing has a thumb-lever in a convenient location for one-handed operation.
However, some of the newer housings don't seem to account for this. As users, we need to communicate with housing manufacturers to let them know that one-handed support for shutter release and the * button is absolutely essential. Otherwise, we are crippled by having to re-lock focus on something every time we shoot.
Thoughts? ![]()