For recon missions, bringing back good pictures was very important during wwI.
Lot of airmen lost their life because they wanted to take pictures in good conditions, or identify the target : this meant loitering at predictive trajectory : ie being a sitting duck.
The same can be said about artillery spotting.
Actually, all the high command knew about aircraft at this time were the pictures they got every morning, and if they did not have it, the squadron leader was invited at the HQ, and the purpose was not to drink Champagne !
In WoFF, I try to take a nice screenshot of my "target" before leaving, and it is quite immersive (if possible in bomber view)