Bio-Rad Quantity One 1-D Analysis Software - Manual (Page 404)

Appendix K. VersaDoc
K-7
You can edit a custom application by selecting Custom, Edit, and the name of the
application. You can also use this feature to create a new custom application from an
existing one.
You can delete a custom application by selecting Custom, Delete, and the name of the
application.
K.3 Step II. Position/Focus
Before positioning and focusing the image, select the application that you will be
using under Step I.
Note that the optimal position and focus will be different for a filtered image versus
an unfiltered one. (All standard applications except Chemiluminescence use a filter.)
Position
After you have selected your application, you are ready to center your gel or other
object within the camera frame. To do so, click on the Position button. The VersaDoc
will begin capturing a “live” image and updating it every second.
With the Position button selected, study the image in the acquisition window while
you position your object in the center of the sample stage. If you have a zoom lens on
the camera, you can adjust the magnification while you position. (See the VersaDoc
User Manual for details on positioning.)
While you are positioning, you can select the Show Alignment Grid checkbox to
display a target grid overlay on the image.
When you click on Position, the light inside the camera box automatically switches
on. To turn the light off while positioning, deselect the Light On checkbox.
When you are finished positioning, click on the Stop button.
Focus
Note: Before focusing, you should adjust the f-stop on the camera to the lowest setting
(i.e., the maximum aperture). This reduces the depth of field, allowing you to
more accurately focus the camera. Then, after focusing, increase the f-stop to the