Mikrotron eosens TS3, Руководство пользователя, Страница: 36 / 120

11S-3000M
page 27
Figure 4-7: Black Level Calibration and Settings
4-6 Black Level Calibration
Black level calibration does t w o things:
1. It sets the black level of the camera to ensure that, in the absence of all light, there is no o ff set or
clipping (the “blackest” pixel will have a value of 0).
2. Dark frame data is saved for correcting Fi x ed Pa tt ern
Noise (FPN).
NOTE: Fixed Pa tt ern Noise exists on every image sensor.
Calibrate Black Level:
The general rule is to do a Black Level Calibration if
e ver you believe the image looks noisy with Pixel FPN
turned on. To be assured that you are getting the b es t
possible images, perform a calibration :
• When you fi r st boot the camera up.
• If you change Shu tt er Speed, Frame Rate, Resolution, or O ff set.
To Calibrate the Camera
1. Navigate to Record/Black Level
2. Shut out all light to the sensor: close the f-stop down all the way and put a lens cap on it or cover
it securely.
3. Click on “Calibrate.” There is a prompt to confirm th a t you have the lens cap on. You will see a
little p r ogress bar and you will see a couple of noisy images on the screen. When done, if Pixel
FPN is on, the live image with the lens cap in place should be black.
4. Next to the Calibrate bu tt on, you will see an FPN selection bu on that will say FPN O ff , Column
FPN, or Pixel FPN. Click on that bu tt on and select the FPN setting y ou wish to use, based on the
following:
Pixel FPN is a per-pixel image correction th a is done in the TS3’s image processor engine. It
provides the cleanest images available. This is the setting t ha t is most highly recommended,
especially if the images will be downloaded or viewed on large, high-contrast displays.
Column FPN is an image correction done on the T S3’s sensor. It does not do as good a job cleaning
up the images as Pixel FPN.
FPN Off means that there is no noise correction being used.
4-7 Record: Arm and Trigger
Lights Camera Action!
• Black Level Calibration has been don
• The scene is framed and focused
• The Resolution and F
r ame rate are set
• The Shu tt er Speed is set
• The Bit Depth is set
• The Trigger Point and Trigger Type is set
Take a Still JPEG
Still JPEG Image . It is optional, but e r commended, to take a reference still of the scene:
1. With the TS3 in Live Mode (not Recording or Reviewing a recording) press the Trigger Bu tt on.
2. A dialog box will appear asking where to store the image. Select the storage media you wish to
use. (The image will be saved in <storage device>/dcim/100fastc.)
T3 User Manual