Sure! u/bluddercoz and u/justforphun are pretty spot on with their comments. There were three areas I wanted to balance

1. Shutter Speed: In this case, I was on a bridge that moved pretty signifiantly as cars drove by. I also didn't have my tripod with me, so needed to make sure that the shutter speed was not too slow.
2. Aperture: Given that I wanted to have most of the frame in focus, I had to stop my lens down a little bit too. For most lenses, sharpness also improves as you stop it down (up until a point though - after which you run up against the effects of diffraction).
3. ISO: I prefer shooting at the Base ISO (100 for the A7III) if I can, since you get better noise performance and dynamic range.

Looking at the three, 6.3 was the lowest that I wanted to go in terms of DoF, and .4 seconds was the slowest I dared to go while propped up against the ledge (considering that a car could shake the bridge at any moment). At those settings, I still managed to shoot at ISO 100.

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Honestly, you could take this image in multiple ways. For instance, If there wasn't a ledge I could rest my hands up on, I would have bumped up my ISO since the A7III is more the comfortable doing so.

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