Why can't digital sensors allow .1 ISO?

Started Feb 7, 2014 | Discussions thread
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hotdog321
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Why can't digital sensors allow .1 ISO?
Feb 7, 2014

I'm a photojournalist and shoot with two 5D III cameras. I love the heck out of the low light sensitivity of modern DSLR cameras. But why can't sensors allow landscape photographers to eliminate the 9-10 stop filter when desired?

The lowest speed my old 5DII cameras or new 5DIII cameras can handle is ISO 50--why not ISO .1 for flowing water, moving clouds, etc.? I'm sure there is some good reason.

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Canon EOS 5D Mark III Canon EF 70-200mm f/2.8L IS II USM Canon EF 24-70mm f/2.8L II USM Canon EF 16-35mm f/4L IS USM Canon EF 11-24mm F4L +1 more
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