SPOT 4.1 Basic and Advanced Software Manual for SPOT Insight ...

Ch. 5 – Preparing to Take a PictureTo have the camera calculate the exposure time, follow thesesteps:1. Close the Image Setup window.2. Close the Image Setups dialog box.3. From the Camera menu, select Compute Exposure.4. The Exposure Settings for the current image setup appear. If youdecide to change the settings, you can do so from the ComputeExposure window. Any changes that you make will be saved tothe current setup.5. Click on Begin. The Status message changes to Computingexposure… as the camera samples the light. When the camerafinishes, the Exposure window displays thecalculated exposure time and gain.6. Select an image setup from the Save to Setupscroll bar. The current image setup is thedefault.7. Click on OK. When you open the Image Setup window, the new exposure value(s) appear.Note: For information on entering Image Type,Gain Limit, Adjustment Factor, and WhiteBalance, refer to the appropriate section in thischapter.Note: When you save the calculated exposure value to an image setup, it automatically changes thesetup from Auto – Exposure to User Defined.GainWhen you define your own Exposure, you can enter the precise gain that the camera will use for an imagecapture. You can enter a specific gain in one of three ways:• You can manually enter the gain by selecting one of the five gain options from the selection list.• You can let the camera compute the best gain (and exposure times) by using the Compute Exposurefeature (see the previous section).• You can use the Recall Previous Exposure feature to recall the gain from the previous image capture(see the previous section).To manually enter a gain, follow these steps:1. Ensure that the User-Defined Exposure option is checked.2. Select one of the five gain options from the list. If the pixel bit depth is set to 12 bpp or 36 bpp, the 16gain value is unavailable.To use the gain that the camera selects, follow the steps (in the previous section) listed for computingexposure times. The Exposure window, in addition to the optimal exposure times, displays an optimalgain. This gain is automatically added to the image setup that you specify in the Save to Setup box.Note: The Compute Exposure window displays the Gain limit defined for the current image setup.This limits the gain options that the camera can choose from. If you do not want to use the GainLimit shown, it can be changed from the Compute Exposure window.User Guide to the SPOT Insight Camera 103