The watt rating printed on the side of equipment (which I presume is what you are quoting) often indicates the maximum current draw. The average power used may be significantly lower. You need to measure this. A clamp on ammeter is the easiest way
The time you are using the camera and the rest time between uses is also important to work out your requirements.
Solar production is very dependent on location and time of year.
Without these sort of details we can only guess at a system to meet your needs
I have camera that carries a load of 250Watts as i checked.
now my boat might go on a remote location for 2 day.
i want that my camera that is connected to the battery only will work for 2 day only.
the remote location can be any where.