Verdict: 2.5 stars ACDSee Photo Studio for Mac 8 is the MacOS version of ACDSee’s all-in-one Photo Studio application. From its features, it looks like a strong rival to Lightroom or ON1 Photo RAW, for example, but the reality is very different. It’s both basic and technical at the same time, it’s missing features many might take for granted, and it looks like a Windows program ported on to the Mac, even if it isn’t.