Like everyone else I don't seem to recall much in the way of German photos of the HSF outside of port, but then the OTL HSF didn't spend all that much time at sea. Also a lot of pictures that may have been taken may have been destroyed in the aftermath of the war. I would think 1915 German photo technology would roughly be equivalent of the Japanese in 1942 and they got some pretty good shots of US ships under attack. The picture of the USS Pope at Macassar Strait comes to mind.
The technology was there for some night photography, although they probably didn't have anything even close to the Tri-X (pushed three stops) I learned night photography on. Most of the combat pictures would be nothing more than white blobs on an inky black background. But the blazing Marlborough would be a good possibility for a decent picture.
The two Hexes were sunk and a third so beat up the combat photographer is probably dead. However the Ostfriesland got off with little superstructure (where the photographer would be) damage and she would have been in perfect position to see the blazing Marlborough turn to port. The newer dreadnoughts were at longer range and probably did not get a good look.
There is an off chance that one or more of the Baron's ships could have gotten pictures of stricken British light ships caught in searchlights or the loom of starshells.
A chance to trade his "Mathew Brady" pictures after the battle for action shots of even low quality action shots of a blazing dreadnought and/or sinking cruisers should light Blue Fox up like a pinball machine. The shots themselves would be so compelling that most Americans would overlook the fact they were shot by the Germans and could be considered propaganda. You just can't credibly stage burning battleships - at least not in 1915.
No way Blue Fox has anything to do with sending back either his prose or his pictures without his person. This stuff (from his standpoint) is too fresh and too valuable to trust anyone with. Besides his ambition requires he be there to garner the accolades. Ballin, knowing US reporters would know this, but nobody else in Germany would have a clue.
The Germans really don't want Blue Fox hanging around too long, anyway. His culture is too different from theirs and keeping him around just invites trouble. He does an interview with the Baron (using Ballin as interpreter), swaps some pictures and they put him on a train to Naples with a ticket on an American or Italian liner for New York. Also the longer he hangs around the more chance he has of appearing on the British radar. He gets back to NYC by early August and cashes in his exclusives. He becomes famous and maybe a bit more economically comfortable and the British are hugely embarrassed.
Blue Fox's exclusive hit the US papers about the same time as reports begin to filter in about problems with the ships sent to Archangel, and maybe a breaking of the distant blockade. From a professional naval standpoint, these are almost inconsequential, but the blow to political and press morale in the Entente will be huge. And we all know what Napoleon said about the relationship of the moral to the physical.
