re: #16 Decatur Deb

For quick shooting, there’s always “hyperfocal distance”.

en.wikipedia.org

lol, I don’t know if that’s quick shooting.

If I want quick shooting of street scenes (ala Cartier-Bresson), I lock the aperture at what ever yields the best shutter speed for the focal length of the lens, normally 1/(whatever the length) since it’s handheld. Set infinity at the depth of field scale for the f stop used. Adequate focus is what the range depicts. No math or focus required. It’s all about the image then, the test is whether or not the viewfinder is needed. ;)