Hey Caleb,
The questions below are largely rhetorical - you don't need to answer them here but they could help you clarify and focus your logline.
Regarding the goal, think about where your protagonist starts - he's a heartbroken guy holding onto the past. Memories, footage etc. Does he get it back? Will he be spiritually better off by going through this journey if he recovers the camera and the footage? What if he gets the camera, but the footage is gone? How did his son die? Was it in some kind of street violence?
Also to have "resolution/resolve" as a goal is too vague. What is he trying to resolve? The theft of the footage or the torment? How will we (the audience) know that the torment is gone? His torment isn't caused by the camera being stolen, but by his son's death. The two are connected, but not causally.
In the logline he's taking photos of a sunset. This is something most of us do all the time - if facebook feeds are anything to go by :) My point? What the guy's doing needs to reveal his torment. It's a clich? now, but think of Riggs at the start of Lethal Weapon or Kurt Russell's character at the beginning of Stargate. It's crystal clear, couldn't read as anything other than, 'My kid died and I'm destroyed'. Find a new way of doing that and we'll be right there with him.
Stakes - your stakes here aren't really stakes. What's at stake for the photographer is what he stands to lose or gain in the pursuit of this objective (hint - it's not the footage). The important thing here is that the outcome of the stakes should be ambiguous until the story resolves. He could succeed and learn an important lesson, fail, and he might die.
From what you describe in that section it sounds like your protagonist doesn't help the kid who stole his camera. The idea of of the attacker being attacked and his fate resting in the hands of a distraught father who he mugged the day before is a great idea. This is a real, honest-to-goodness dilemma, one that most of us would want to know the outcome of that moment.
As it's written above, there's no conflict - father gets beaten, finds attacker, attacker gets beaten, father doesn't help. That choice and it's consequences could make for some great storytelling but at the moment, the father is a passive spectator watching someone else do the 'dirty work' and I lose interest in him as a character.
You mention that the father is fragile, if he's fragile at the start and in the middle and doing nothing to change that, how does he go from victim to victor? Does he deserve this change, if so, why?
Regardless of my thoughts, your notes reveal a much more complex story than is being communicated in the logline. The trick is getting them into the logline and using that as your target for writing the script.