I also finishedtook an exam today. I took an exam today.

We usually say "took" for exams in English.

I also finished an exam today. I finished an exam today.

You didn't write anything before this sentence, so there's no need to add 'also'.

I also finished an exam today. I finished an exam today.

I also finished another exam today. I finished another exam today.

“Another” makes sense since you mentioned in a previous entry that you’d also had a test yesterday.

Hopefully, it'll turns out well. Hopefully, it'll turn out well.

Hopefully, it turnthe results out well. Hopefully, the results out well.

This is fine, but just a little bit awkward, though that might be subjective to me. I think it's because the thing you're hoping for is about the exam results, rather than the exam.

{Hopefully, it’ll turn | I hope it turns} out well. {Hopefully, it’ll turn | I hope it turns} out well.

These two alternatives sound more natural to me.

Recently, my senior schoolmates have been taking graduation photos, and I took pictures of them with my film camera. Recently, my senior schoolmates have been taking graduation photos, and I took pictures of them with my camera.

We wouldn't usually specify what kind of camera when we're saying we used the camera. Only when we're mentioning the film in the next sentence! :)

Also, I noticed I have only one shot left on my roll of film. I noticed I have only one shot left on my roll of film.

Usually we use "also" when we're listing things, as opposed to explaining what happened next in a sequence of events.

Also, I noticed I have only one shot left on my roll of film. I noticed I have only one shot left on my roll of film.

It’s more natural without “also.”