3 ms·
Yeah, we used to use graphite (as flat as we could get it, tried to ensure we had a single surface) to see how good it was. You could tell how good it was from
by joncrocks 10y ago
Yeah, we used to use graphite (as flat as we could get it, tried to ensure we had a single surface) to see how good it was. You could tell how good it was from how much noise you got and therefore how good your image was.