Editing Bookscanner (section)

=== Cameras ===

We use two [https://en.wikipedia.org/wiki/Canon_EOS_1100D Canon Digital Rebel T3] cameras,  attaching the scanner frame to the body with a screw that resembles what you would find in a tripod head. Each is connected via USB to a computer and remote-controlled with a [https://github.com/danyq/diybookscanner Python script] that uses the [http://www.gphoto.org/doc/remote/ gphoto2 library]. There is no battery or persistent storage in either camera. Pictures are transferred to the controller computer after the shutter is triggered. If you would like to use different cameras, [http://www.gphoto.org/proj/libgphoto2/support.php there is a list of cameras] supported by gphoto2 .

The settings as of this revision are the following

<pre>
mode: M
aperture: F14
shutter: 1/20
ISO: auto
zoom: 24mm
stabilizer: on
manual focus
</pre>

All manual settings 

# The zoom is adjusted by turning the ring around the lens and looking at the numbers, which indicate millimeters.
# The mode is indicated by turning the circular knob on the upper left, so the letter M is facing the arrow.
# The stabilizer is a physical switch on the lens. It is marked "stabilizer".
# The focus is adjusted by turning the ring on the far end of the lens. This will require you see down the viewfinder. This camera supports live viewfinder mode. Open Darktable in tethering mode.