For the sake of bandwidth and ease of page download, we've settled on creating our screen captures as 90% jpegs (it enforces a compression of 10%). This attack infers that we should use slow loading, large file sized (up to 5 times larger), PNG (essentially lossless) files. Here are examples below using Fantoma's The Tiger of Eschnapur (Fritz Lang) DVD.
DVDBeaver 90% jpeg (110kb):
'lossless' PNG file (577 kb):
Hopefully you will agree that in most of our list above of technical facets there are no extravagant differences. In fact:
1) Colors show no extravagant improvement
2) Detail shows a very minor to non-existent difference
3) Digital compression is more apparent in the jpeg to a very-minor degree