As a rail photographer these trips are a real opportunity, but each trip presents challenges, i.e. accessibility, traffic, and sun angles.
The Allentown trips suffer from traffic and congestion from there to Jim Thorpe, then there is the virtual inaccessibility of the line through Lehigh Gorge until White Haven.
The photo appeal of this trip would have to be the climb from White Haven to Mountain Top, 765 should get a real workout as it winds in several directions on the old CNJ, and chase roads are somewhat better. Unfortunately the return trip also suffers from access issues.
The Binghamton trips have a 1.7% grade west out of Scranton, this should produce some great images, depending on track access between Scranton and Clarks Summit.
However , the old DL&W is a speedway from there, only a slow trip over the Nicholson viaduct would permit a photographer to get ahead to other locations.
The Allentown trips (approx. 70 miles) are slightly longer than the Binghamton trips (58 miles) and probably get the edge for someone riding just for scenery.
The short trips from Scranton to the Nicholson viaduct should also be worthwhile for the photographer, with the combo of the 1.7% grade westbound and F-units.
All of the 611 and 765 trips this year have issues for the serious photographer, many places are not the same as they were 25 years ago.
Practicing the 5 "Ps" will be key to getting good images/photos!
Proper Planning Prevents Poor Photos
That said, if there are trips on Steamtown tracks east out of Scranton, these would be a blast for any railfan with the opportunity for open windows/vestibules!