Archived posting to the Leica Users Group, 2008/05/03

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Subject: [Leica] HDR
From: red735i at earthlink.net (Frank Filippone)
Date: Sat May 3 07:09:23 2008
References: <5CDA84BF-376B-4255-9808-2575AB6ECFE3@nathanfoto.com> <C441B981.3C686%sam.kennard@mac.com>

This is about 7 stops difference overexposed, and the same underexposed from
nominal exposure.  That is a lot of shadow and highlight detail thrown into
the mix.

Frank Filippone
red735i@earthlink.net



Yamada showed a 177x144 pixel image sensor that takes three photos of the
same scene in rapid succession. In one example, he said, the first exposure
lasts 1.5 microseconds, the second 150 microseconds, and the third 15,000
microseconds (not far from a 1/60 second exposure). Extra circuitry built
into the sensor records the data from the multiple exposures and uses an
assortment of electronic capacitors to combine it into a single image that
spans a greater dynamic range.




Replies: Reply from dstella1 at ameritech.net (Dante Stella) ([Leica] HDR)
In reply to: Message from nathan at nathanfoto.com (Nathan Wajsman) ([Leica] test)
Message from sam.kennard at mac.com (Sam Kennard) ([Leica] HDR)