I'm not sure that a new trade deal would make any difference to prices, but the initial market reaction to that nice Mr. Trump's election has been for the value of the dollar to fall sharply, and as the US dollar is the primary currency benchmark (the USA has historically attacked countries that try to trade in other currencies) then we can expect the fall to reduce prices of all imports and to increase the American prices of all imports to them, which means that cameras are likely to cost more in the U.S. and may cost less elsewhere.
Of course, it may rise again, or it may fall further, we just have to wait and see on that. But I doubt whether it will fall enough to offset the damage to the £ caused by the Brexit vote, so any improvement is likely to be no more than an offset.
