I'd love the most verbose people to actually take the time to photograph a step wedge, it should take about 15 seconds, and post their results.I had one back in the good old days of the B+W darkroom.... I kind of wish I had one now because this has gotten me very curious as to how my various cameras compare... I might have to order one (any recommendations?)
Please correct me if I am wrong, but I always thought of "stops" as an analog/perception scale and that it did not necessarily match up with a digital scale... perhaps part of the confusion here is that people are talking about two different things yet using the same terminology.
Whilst the Stouffer versions are the standard I know of, there is no reason decent results couldn't be got with a home printed version. With careful lighting and exposure I would think you could do very well.
Well I wouldn't get into a semantics argument here, it seems many have far more time than I do and that is all it takes to "win", but I think stops translates just as well to digital as analog, it is just much easier to read the values of the output now and they are finite, unlike the infinite variability of analog density. When we needed to know the density of negatives it was much more involved than moving a cursor over the relevant pixel
Just out of curiosity, how did you determine the density of negatives? How accurate were the measurements?