There is something to be questioned about lightening one's camera gear for the sake of saving weight for UL hiking.
After thinking for a while, I believe there exists an invisible line between those who want a camera with them for snapshot purposes and those who want to take advantage of UL hiking so they can get good pictures.
I am a photographer and make the majority of my income through my photography. I could care less about the money because photography is my life passion. For me, UL hiking is an opportunity to take some amazing photos that I will cherish and that might inspire others. My love for photography, travel, and the outdoors were all sparked by the magnificent photos in National Geographic magazine. The NG photographers lugged tons of gear and risked their lives daily to get those pictures, but the end result is undeniably awe-inspiring.
Personally, I cannot justify lightening my load of camera gear. The gear I plan to hike with weighs in at about 12 lbs. To an ultralight hiker, 12lbs is probably jaw-dropping. One of my main reasons for hiking is to take good photographs of what I see. I have done many a day hike and a few overnighters with gear weighing more than 12lbs, but I was very glad to have that spare battery and that 4lb ultra-wide lens.
The difference between photography and backpacking, with the exception of tripods, is the higher the quality of the gear, the more it weighs. However, I am willing to lug extra weight for my photos- they matter that much to me. I'd much rather nurse a few extra blisters than regret my entire trip because I came photographically unprepared.
If interested, here is my Flickr album from my most recent trip (3 days and 2 nights on Cumberland Island National Seashore):