One of my bodies has the Maxwell, the other has a first generation acute Matte (before the 'D'). It has no focus aid at all - just a matte screen. Irondically, it works fine - just not as much fun & probably tougher to use in low light. I've seen the Acute Matte 'D' and they are nice. I don't recall it being as bright as a Maxwell - which makes the Maxwell "slightly" less painful. The 'D's I saw used were so expensive, I'd say the Maxwell is a better performer and a better value for the $$$.