Filter
Top Products
28
e Scan Time readout displays the overall scan time for the selected Scan Area, Resolution,
and Line Time settings. e overall scan time is simply the (actual) time per line multiplied by the
number of lines in the scan.
Remember that moving your light in half the distance from the lamp to the subject will
increase your light level by two EV (2 f-stops). Also, moving the camera back away from
the subject (or using a shorter focal length lens) will reduce the subject size on the ground
glass and minimize the bellows draw; reducing your exposure time. Crop in and increase
the resolution to match the previous file size. A lens change may be needed to maintain the
desired optical perspective.
See Appendix B for more information and options on controlling exposure and the subsequent
density of your imaging.
Starting with the USB controller and SCSI controller firmware revision 4.14 (and later), there are
line times faster than the maximum physical scan speed. When these speeds are selected, the insert
will move from scan line to scan line at the fastest mechanical speed but will electronically capture a
line of pixels at the higher speed. e maximum electronic shutter speed is 1/3000 second.
e higher capture speeds allow you to use larger apertures without burning out the image
highlights or to allow use of the optimally sharp aperture for your lens without overexpos
-
ing the image.
ISO
is set of up/down buttons determines the overall sensitivity (ISO/ASA)
of the camera. e
ISO settings are ideal to use as fine tuning controls for expo-
sure to accurately adjust to the desired image density. e ISO is continuously
selectable in 1/10 EV steps from 200 to 3200 ISO (model series 4000, 6000 and
Super 6K™) and from 120 to 2000 ISO with the Super 8K™. Hold the Option
key down and click on the Increase or Decrease buttons to jump to the maximum or minimum ISO
values. With film, the apparent image grain increases as the ISO value is increased. e digital camera
behaves in a similar manner with the shadow noise increasing as the ISO is increased.
1/10 EV steps is the default setting in the Preferences. For those who wish larger step sizes,
the ISO increment can be changed to 1/3 EV in the Preferences.
ISO control.