I still find Cameron very helpful, but with this limitation. As Cameron writes, “This commentary is meant to be used with . . . Smyth’s Greek Grammar . . . . [and] with the abridged edition of Liddell and Scott’s Greek-English Lexicon (p. ix)” I judge this commentary is meant for intermediate students well acquainted with these two references. If an intermediate student can fairly quickly resolve his bafflement with these two references, then Cameron may not comment on the problematic word or phrase at all.
Where Cameron excels is in explaining lexical and grammatical matters that might be completely unexpected by the student. An example might be a secondary meaning of a word, given tersely deep within or even on the very last line of an article in the abridged L&S. It’s as if Cameron taught this text and knows which problems will stump good students. If it’s in Cameron, it will help me. I wish he had written more. Of course, I am in no position to evaluate Cameron’s scholarship.
Howard Don Cameron died two years ago. https://lsa.umich.edu/classics/news-events/all-news/search-news/remembering-don-cameron.html