BioDocAnalyze (BDA) digital - Biometra

BDAdigital Manual, Vers. 01_11
21
Image Capture
Take picture Click on the button releases the camera. The picture is transferred from camera to PC and
is displayed in the gel window in the right of the Capture window.
The “additional” functions Rotate, Invert, Black&White Mode and Saturation are deactivated
after taking a photo or printing. These functions have to be activated again when it is
desired to have.
Rotate 180° For rotating the picture 180°, for example when the gel is positioned the opposite way
round on the illumination table or when the camera is fixed on the darkhood or stand with
the camera control panel ahead.
Invert For inverting of the gel picture. The use of this function is only senseful with
black&white pictures.
Black&White Mode Activation of this function results in a change of the colour picture to a grey-scale picture.
Saturation Activation of this function sets areas of the photo to blue colour if the signal reaches saturation.
The photo display automatically switches to black&white mode.
The pixels of the area to be quantitatively analyzed later must not be saturated, neither
true white or true black. That means that the area of interest must not be in blue colour.
This can be achieved by shorter exposure times or with smaller lens apertures (= larger
lens aperture number).
When using longer exposure times it is possible that the live preview is darker than the
photo. This will cause differences in the saturation display of preview and photo.
Copy Conditions Click on this button loads the settings parameters of the gel picture (BD1 format!)
which was loaded into the gel window. The new setting parameters can now be used for
taking a new picture or for saving as profile.
Analysis For saving of the picture in the Biometra-specific BD1 format, JPG or TIF format and the
following transfer to the BDA analysis software. After saving the gel picture will automatically
be opened as black&white picture in the analysis part for further gel analysis.
Exit For closing of the capture window.
Fig. 3-4 Functions for image capture