>>4486318each option is a compromise due to imperfect technology
shutter speed is a measurement of how long each part of the sensor(/film) is exposed to light, not how much time it takes to expose the entire sensor to light
the latter is usually the camera's flash sync speed (with HSS turned off, which again is tech with compromises)
for example, your mech shutter may have a max speed of 1/4000 and a sync speed of 1/200, but e-shutter has max speed of 1/8000 and sync 1/30 because that's how long it takes to read all the pixels off the sensor
so if you use either at 1/4000s, the mech shutter is taking a 1/200s slice of reality but the e-shutter is 1/30s, both technically rolling shutter but one is much less noticeable than the other
this is why leaf shutters are so desirable, but those typically have a lower max speed (like 1/500)
also why global e-shutter is such a big deal, basically exposure for each pixel is done at the same time
>>4489063>Is youtube lying that you justyes it's lying
fungus is a living organism, and its waste products are acidic and etch the pattern into the surface of the lens
a lens with fungus that bad is basically worthless, only good if you're desperately in need of some of the parts to fix another copy
