We are all aware of the trope of having to sit still for what would feel like forever for a person in the victorian age, but when and how did that shorten? A saw a photograph of a cat cited as being from the 1870s to 80s, and the cat was not sitting still. I know the old daguerreotypes took tens of seconds of exposure, and that throughout the century that time did shorten, but which development allowed for a photo to be taken of an object in motion without it blurring into a streak, and when?
Basically, when were we able to just take a snapshot of someone without them having to hold a pose?
You don't need to be that fast to make an image of something moving. If you stand on one leg and close your eyes you will start to move about slightly. A camera that takes an image at 1/60 of a second will make any moving objects look still anything below that including the slight movements you would be making standing "still" would show in the picture. Depending how well lit the subject is also makes a difference on how long the exposure will need to be
The old pin hole cameras would be opened and closed manually so you cud take the photo at what ever speed you wanted really. I think we assume people had to sit still longer than they did because they didn't smile a lot.