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I certainly don't particularly want to get involved in this debate but it's worth noting that shutters didn't even exist when faster
lenses where being developed by the likes of Dallmeyer. Muybridge built electrical shutters for his famous work from the 1870's but before then people where still using caps on cameras to control exposures. A faster
lens, such as the early Dallmeyer
lenses, simply allowed a shorter (ie. a faster)
exposure. Muybridges shutters where giving him around 1/1000th of sec exposures (on wet plates!).
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