Not the parent but that was not at all clear to me. I immediately thought of taking multiple successive instantaneous screenshots and then stacking them. I'm not sure I would have thought of using a camera within a few minutes to an hour, it's not a tool I would ever reach for normally.
I just did this with 50% transparency. It works
Also not the parent but how the hell did you not understand what "long exposure" means ffs
Oh, so your screenshot utility has "long exposure" and an "ND" filter and "shutter speed" controls, just like a phone's camera? What kind of screenshot utility simulates optical camera effects? What purpose does that serve? Care to share a link to it?
>Obviously harder to expose a bright screen without some ND since the shutter speed is the phone's main exposure control
https://en.wikipedia.org/wiki/Neutral-density_filter
https://en.wikipedia.org/wiki/Shutter_speed