Bryan Adams, courtesy.

“Summer of ’69” singer-songwriter Bryan Adams may have sold more than 65 million albums, had 21 top-10 songs (seven reaching the peak of the charts) and had his tunes featured on more than 40 movie soundtracks throughout his lengthy career, but photography has been his chief muse over the past few years. Following a successful ad campaign for Guess in 2008, and a book of portraits of his friends in arts and entertainment last year, Adams is preparing to unveil his latest project, a collection of photographs of soldiers injured in Iraq and Afghanistan. The Canadian-born, London-based artist is also reviving his stripped-down acoustic tour, “Bare Bones,” which comes to the Warfield in San Francisco on Monday.

What inspired you to revive this tour, which you’ve been doing off and on for a few years?

I just wanted to play in America a lot, and if I had to do it with my band, I wouldn’t be able to afford it.

How do you approach these acoustic shows differently from a full band show?

Everything about it is pretty minimal. … With the band, it’s really loud and bright. This is quite somber and quite intimate … the songs were originally produced in the studio by a full band, and it’s interesting to see them stand up by themselves with an acoustic guitar.

Are you looking forward to playing throughout the U.S. again?

Yeah, we’ve been touring with this acoustic show in the U.S. for nearly four years now. It continues to surprise me how many places we can play, and even if we do come back again, doing this acoustic tour, which I call “the Bare Bones,” we continue to make friends. I suppose eventually when I get an album finished, I’ll come out and do some dates with my band again. But until that time, I’m just going to go around. I’m doing this because it’s really enjoyable.

What gave you the idea to come back at this time?

I come back every month. … It’s not as though it has to be supported an album or it has to be supported by a song. I’ve got enough of a repertoire after 30 years now. People come to hear the music. There’s a lot of songs that have touched people over the years, and they’ve come to hear the songs they know.

Based on the Bare Bones live album from a couple years ago, it seems there’s a lot more audience interaction with your acoustic shows. Am I right, or am way off?

You’re right on. Every night is different, so I look forward to that kind of interaction. That’s what makes it exciting to keep going out.

Is there anything else you would like to accomplish?

You know, there’s never been a real goal for me. I just take every day as it comes. A lot of people are asking me about what’s the inspiration to do all this work. And I say, it just comes from this really simple idea of creating something from nothing. There’s a real joy in working with other people to create new music or new photos or a new film soundtrack or whatever it is that I’m working on. That inspiration is what gets me going every day.

Have you been working on new music on the side?

I work on new stuff all the time. The thing is, to be happy with making an album now — it’s something that I want to take a lot of time to do because, let’s face it, it’s a very different world out there right now. I guess if I make another album, it will have to be something that I really want to go out and promote. So I’m taking my time.

How is your photography coming along?

I have a new book coming out next month called “Wounded: A Legacy of War.” It’s a series of photographs and portraits of wounded soldiers from Afghanistan and Iraq.

Where did you take those photos?

In my studio in London. It came together with the assistance of another journalist who originally proposed a quite different idea, which was to do a calendar, which I wasn’t interested in doing. But I said to her, “Let’s just do some pictures to see; maybe it’s an exhibition, maybe it’s a book — but let’s just do the pictures first.” It’s nearly been five years. It’s been a long project. It’ll be opening in London at the National Portrait Gallery on the 11th of November, which is Remembrance Day.

Follow Roman Gokhman at Twitter.com/RomiTheWriter.