Hi Karen. Don't worry, I totally understand that taking pics of fish is hard.
Okay, I took a closer look at the second pic and while I'm still not sure I see a film per se, I do see the color change. A lot of sick fish go through a dramatic color change and turn a dullish color that is usually tinged brown so I'm wondering if that's what you're seeing. If this is the case, good food and clean water will bring back his rich blue coloring in time. If there is a film there, chances are good that it is his slime coat. He may have produced excess slime coat while he was sick and he hasn't shed it yet.
One product I would suggest you get if you can is API Stress Coat. It's a water conditioner and also an water additive that you can use to help heal fish and stimulate a healthy slime coat production. You can substitute it completely for your regular water conditioner if you wish, or simply add a few drops during your water changes.
You may also want to consider picking up some frozen bloodworms or frozen brine shrimp. These are high in protein and will also help him in the healing process. You can feed these once a day as part of his regular diet.
Good luck with him and keep us posted.