There are many different types of artifacting that can arrive from the capture to display of an image. And it is specious to lump them together.
The Darblet does increase the noticeability of certain artifacts and has no affect on others. Setting sharpening controls to high causes ringing. The Darblet is not a sharpener. It is a contrast transition enhancer. It doesn't cause ringing.
MTF is a measurement of contrast resolution, and to ones eyes the higher a system's ability to resolve contrast, the sharper it will appear presuming a source frame or frames with contrast transitions.
Back to artifacts. Everyone has different thresholds to the visability, while watching content, of different artifacts. Here ignorance is often bliss and seating distance, room conditions, screen quality all enter into the equation. And yea, I know whatever screen you have is perfect and you love it. Couldn't be any better unless it had more gain.
Its easy to say any artifacting is bad. It artifacts, it artifacts. The sky is falling. Everything artifacts. What differs is your sensitivity as to their visability to them and whether they bother you. And its really easy to become a hollier than thou and scream every artifact is noticeable to you and drives you crazy. Please PM me. I have a job for you for a scene in a movie about a princess feeling a pea a pea through a stack or 156 mattresses. No disrespect, in the author's mind the princess could feel the pea.
Video processes are employed to solve certain proplems with capture through display. Some are offered to the end user and can be adjusted to change the picture to one's tastes.
Its all a question of tastes and its easy both ways to not really trust ones own taste or to discern taste differences, but to rely on the taste opinions of so called experts.. And its not a popularity issue. Over and over, I read tell me what settings the masses are using because that's what I will use and between the lines cause I don't have a clue myself, I can't discern differences that well, anbd I want to be right, The studeo audience please vote and I'll use that answer.
One thing about a forum that is nice, is that one can voice their opinion within certain guidelines of conduct and decorum.
It is certainly acceptable to not like what the Darblet does, to conclude that negatives outweigh positives, that the bang for the buck is not there. Various viewers have opinions that differ as to the net perceived gain or loss in PQ and the cost of the Darblet.
Fortunately for Darbeevision, the vast majority of purchasers (me included) really like what it does when set to a level that results in the largest net positive gain to the particular viewer and that the bang is worth the buck. But I respect those who don't agree and that's why AV Science offers a money back less shipping trial period.