I have seen a tremendously clear and detailed 4x5 foot poster printed from a disc negative.

Of course, it was done in Rochester to be used by senior Kodak management as part of a retirement party honouring a Kodak Canada employee who was:

1) known for many years as "Mr. Kodak" throughout the western half of Canada, because he was the only Kodak representative in that half of our country; and
2) forced to retire just a few month's short of his 50th anniversary with the company, due to Kodak Canada's mandatory retirement at age 65 rule (do the math ).

As I understand it, much of the tremendous improvement we saw in films in the last 1/4 of the 20th century occurred because of the work done to make 110, disc and APS film viable.