So in other words, as of today we still need shutters...
Michael Gaudet wrote:
Technically, we don't really need a shutter for digital anymore, do
we? The sensor can always stay on, and you can have it report back to
the processor for increments as small as you can manage with the
processor and bus speed, such as 50,000/sec.
The trick is to siphon off the heat and electrons (noise, etc.) so
that you can keep the sensor active and amplified for sensitivity at
fast increments. It's a difficult trick (ask the people who made the
Red One camera pass 2k RGB at 120fps from the sensor). As sensors and
processors with HD video technology progress at shunting the the
amplification side effects, the speed will get more pronounced and one
day we'll see the sensor really opened up to fast processing beyond
what mechanical shutters can accommodate. I believe that's being
worked out. Look at the Phantom HD video camera
(http://www.visionresearch.com/) that gets 3k at 1,400 fps (and
"Shutter speeds down to 1 microsecond").
Those developments are coming to consumer cameras probably in the next 5 years.
Date: Fri, 22 May 2009 12:42:29 -0700
From: Joseph McAllister <[email protected]>
Subject: Re: Oh another K-7 thread...
Maybe some day they'll figure out how to get light to travel faster,
or conversely get shutter curtains to zip across the focal plain
faster than 10,000 miles per hour. I'm opting for an optical glass
shutter that blocks light completely until hit with a current at which
time it becomes utterly transparent until the current is removed.
Could even be combined with the low-pass filter glass.
No fee for the idea, but I'd be glad to help with the science,
Pentax....
Joe
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