I'm usually a proponent of the MBA 13", but seeing your main usage is video & photography, your eyes will be pissed off at the screen. If like me, you place more importance on weight, keyboard quality & battery life, then the MBA is it.
You no longer have the choice to buy a new 2015 MBP 13" only the 15" are still for sale.
Refurb'd 13" MBPs are also getting rarer.
I agree with BornAgainMac, the Air is a classic and will be a collectible down the road.
I wouldn't be surprised to see a similar price curve akin to when the iPod Classic was discontinued.
Already the refurb'd 13" MBPs are snapped up by butterfly-keyboard opponents and once the Air is retired (sooner than later), the Air will gain status.
Also, one of the last iconic devices intro'd by Jobs.
No one can make the choice for you. We all wish, the 2017 iteration of the MBA had at least a 1080p IPS display, but only received a minor speed bump to 1.8Ghz.