Personally, yes I think you can. As for how much I can't really say.
I don't know who u are monetizing with but if it's adsense, I've been posting photos only with no text content for awhile now and I've never been told that is a policy violation and I do make money. Not alot, Primarily because I don't have as much time as I need to really add content. Plus I write here and have several blogs, two of which(actually three but haven't gotten it off the ground yet) are photography blogs.
I will tell you this, after going over some of my posts I found that the posts with some text got more traffic than those without so I'm now going back and adding some text.
I understand not having alot of time to write something for every post but it probably is more beneficial. It's a great way to get your pictures out there. I love to see what other photographers are taking pictures of and I like to know what kind of camera is being used. Alot of people don't say.