Pannoramic SCAN 150 1.18 User’s Guide
4 Software Description
You can enter the
Index
value by typing it in the box or by selecting the value with the
arrow buttons. If you raise the
Index
value, the exposition time is halved by every step, and
the image becomes noisier.
Focus
To define focus limits, select
Limiting the range
checkbox. Set the upper and lower limits by
selecting the desired value in the selection boxes. This is useful if
Auto Focus
does not find
the focus on the specimen, but on the coverslip. Also, this makes the focusing sequence
faster.
By using
Set Current
, the
Lower limit
value is set to -32 of the current focus value and the
Upper limit
value is set to +32 of the current focus value.
Use the two arrow buttons to focus manually. This is useful when you are interested in an
area that remained blurry with
Auto Focus
(for example, the specimen is thicker in that
area). This does not influence the way slides are digitized in Automatic mode. The manual
focus is mainly for setup purposes, not for using the product as a traditional microscope.
Define the manual focus step size by adjusting the
Step size
slider. Search for the sharpest
focus on the current field of view automatically by clicking
.
Manual Focus
By selecting the
Use manual focus
box, you can preset the coarse focus value. By activating
the
Coarse focus
function, the lower limit value is set to -64, and the upper limit value is set
to +64 of the current focus value.
Note:
Before entering coarse focus value, turn live image on and set a
suitable focus position.
You can accept the current z-value by clicking
Set Value
.
If you select the
Interpolated focus
option, the coarse focus level is calculated from three
different focus points of the specimen. Carry out a manual focusing sequence in the
preview image on those three points.
Set the correct focus value of the desired preview position by clicking
Set.
If you want to go
back to any of the previously set focus points, click the appropriate
Goto
button. To delete
the stored values, click
Clear Values
.
The software calculates a coarse focus level from the three values determined this way as a
basis for the fine focusing routine. You can only define the start parameter here. This will,
however, speed up the focusing process.
April 3, 2014 - Rev. 1
3DHISTECH Ltd.
89(131)