tanks would hit the bottom substrate
I intensified my training using an action cam in the last few weeks and tried out a lot of situations preparing for the next vacation.
I would call sidemount an essential skill for anyone trying to make underwater photos and videos.
There is one thing that can be troublesome and that is the permanent placement of the camera while not in use.
I often see people dragging their cameras through sediment, since the knees are more horizontal compared to backmount, making any object clipped to the front of the body a dragging risk, and smashing back-clipped things into the ground when inverting position to close to it.
Sidemount gives a platform that is stable enough to settle to the ground on a knee and even with the full length of the body and launching from that position again without stirring up more than a small puff of sediment by accident, none if everything goes according to plan. If done correctly the body will not touch the ground with enough force to hurt anything that was to small to see.
It is also very easy to avoid touching the ground completely and holding an fixed position very close to it.
It is no problem to use, manipulate and re-stow the camera without any significant change in position and trim.
Turning with the object of focus can be a challenge in backmounted configurations.
In sidemount you just turn anywhere you like without thinking about it and I am often surprised at the body positions I find myself in when I put the camera away again after a longer video sequence.
Most important for me is that most aquatic objects either react with curiosity or significantly reduced fear to someone approaching them moving only fintips a little and showing them the comparatively small and non-threatening frontal profile.
In the sweet-water environments I mostly dive, I am often completely ignored and even rammed by animals fleeing from more threatening things than me.