PanoTools NG:
AW: Re: Canon 5D MKII
ptgroup 2012-Mar-17 20:35:58
...at higher speeds the shutter opens only part of the sensor....
I can?t get any information on that.
If only parts of the sensor would be used- what kind of image shall I expect ?
I wonder how a film then is completely exposed a 1/1000 ??
Or did I miss s.th. ?
ciao
Mike
http://www.virtugraf.de
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-----Urspr?ngliche Nachricht-----
Von: #removed# [mailto:#removed#] Im Auftrag von Erik Krause
Gesendet: Samstag, 17. M?rz 2012 20:20
An: #removed#
Betreff: [PanoToolsNG] Re: Canon 5D MKII
Am 17.03.2012 18:11, schrieb Paul Fretheim:
> Surely there is also interpolation in film scanners. In many ways a
> digital camera is just a differently organized scanner which scans the
> real world instead of film.
No. This is wrong in several ways.
- A decent film scanner uses three strip sensors, one for each color channel, no Bayer pattern. RGB
samples are taken from the same location one after the other. No interpolation necessary, you get
true RGB pixels.
- A digital camera doesn't scan the real world, it exposes all sensor cells in one go. At least at
shutter speeds below 1/250s (at higher speeds the shutter opens only part of the sensor).
--
Erik Krause
http://www.erik-krause.de
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