Im new to 4x5, shooting MF for many years before. I have no issues with semi long exposures as some of my MF cameras allow for speeds up to 4 seconds, or worst case, I can use ap priority shooting and let the camera control the shutter.

for 4x5, all my lenses, and I assume most LF lenses, max out at 1 second. so suppose I meter the scene and decide that it needs 1.5 seconds, or 2 seconds, and say up to like 4 seconds. and I would prefer to keep the aperture the same, not opening up to allow a faster shutter speed. how do you take just longer than 1 second? I have taken 30 second exposure and used the T setting or B along with a stopwatch. at that length, being off by .1 second or so should not effect the exposure. but that difference could change the exposure of a 1.5 or 2 second exposure. you get what Im trying to say.

so how do you work in what I call the danger zone?

john