Darn, I need a new set of eyes, I don't see any "clumps". (I don't wear glasses/contacts, so it must be the eyes)
Did you actually read the review, from someone who actually saw the film in motion, not just a 1/24th of a second frame grab?
this high definition presentation is remarkably crisp most of the time, with very pleasing fine detail in the many close-ups . . . . Olive continues its tradition of releasing product that does not appear to have been even slightly digitally tweaked, so this retains a very natural filmic appearance.