Camere produces different quality pictures

Do you dispose of goImager (the Imager object) every so often, or only at the closing of the application?  How often is boolTriggerIsCamera evaluated?

What version of ICS are you using?

Hi Steven

I have a sneaky feeling that I'm writing settings all over the place and perhaps losing my preferred defaults for high quality when the user pulls the trigeger.  My code does the following:

1. If the user wants the flash turned on - I turn on the falsh as one setting when they check the menu option
2. If the user wants to zoom - I zoom to the level they require as another setting when they check the preferred zoom setting
3. The picture quality is always set high when the user pulls the trigger

I turn on the flash and zoom by the use of a pop-up menu.  The user has an option to click 'Use Flash' and this turns on the flash immediately (so they can see the picture in the image preview).  The user has 4 zoom settings from Normal (1) to 4 (Max Zoom). 

If the "Use Flash" menu option is checked, then everytime the user chooses to take a new picture, I turn on the flash and at the same time I set the zoom to whichever zoom option is checked on the menu.  This is all done when the user clicks the "New Picture" button.  The high quality settings are set when the user pulls the trigger.  So below are the functions and the events where I set settings:

Sub configureZoom()
        Dim moImagerSettings = goImager.GetPresetSettings(PresetId.Default)
        moImagerSettings(SettingId.DigitalZoom) = intZoomLevel
        goImager.SetMultipleSettings(moImagerSettings)
    End Sub

    Sub configureFlash()
        Dim moImagerSettings = goImager.GetPresetSettings(PresetId.Default)

        If mnuItemUseFlash.Checked = True Then
            Dim intsafeLevel = ImagerScannerTriggerHelper.goImager.GetCapability(CapabilityId.MaximumIlluminationLevel)
            moImagerSettings(SettingId.AutoExposureMaximumIlluminationLevel) = intsafeLevel
            moImagerSettings(SettingId.ContinuousIlluminationEnabled) = True
            'moImagerSettings(SettingId.AutoExposureEnabled) = True
        Else
            moImagerSettings(SettingId.ContinuousIlluminationEnabled) = False
            'moImagerSettings(SettingId.AutoExposureEnabled) = True
        End If

        goImager.SetMultipleSettings(moImagerSettings)

    End Sub

'Now when the user pulls the trigger, the following is setting in the trigger down event (some settings are commented out so please read carefully):

    Private Sub onTriggerDownEvent(ByVal SourceId As UInteger, ByVal SourceFriendlyName As String)
        If boolTriggerDisabled = False Then
            If boolTriggerIsCamera = True Then
                Try
                    Dim moImagerSettings = goImager.GetPresetSettings(PresetId.Default)

                    'moImagerSettings(SettingId.ImageDownloadEnabled) = True
                    moImagerSettings(SettingId.ImageDownloadType) = ImageType.JpegColour
                    moImagerSettings(SettingId.ImageFileFormat) = ImageFileFormat.Jpeg
                    moImagerSettings(SettingId.JpegQualityPercent) = 97
                    strFilename = "\My Documents\" & strFilenamePrefix & " - " & Format$(Now, "ddMMyyyy-hhMMss") & ".jpeg"
                    moImagerSettings(SettingId.ImageFilename) = strFilename
                    moImagerSettings(SettingId.SubsamplingFactor) = 1
                    'moImagerSettings(SettingId.DigitalZoom) = intZoomLevel
                    moImagerSettings(SettingId.ImageSaveToFileEnabled) = True

                    goImager.SetMultipleSettings(moImagerSettings)
                Catch ex As Exception
                    MessageBox.Show("GetPresetSettings(PresetId.Default) failed with " + ex.Message)
                    Return
                End Try
            Else
                goImager.CaptureAsync()
            End If
        End If
    End Sub

It could be that I'm overwriting settings everywhere.  One thing is clear, I'm not really certain what each setting really does as they come from other examples.  I've tried moving the code out of the "trigger down" event and setting all my options in one go when the user clicks the "New Picture" button but then I can't get the flash turned on for some reason and I've noticed that if the ImageSaveToFile option is in the button event then another picture gets written.  Do you have any suggestions as to "what should go where" please?

Hi Steven

I genuinely thought this was the case but I was marching on regardless.  Where is the EP10 Zoom demo that you refer to please.  I tried searching for it but just got a french page with some links to firmware stuff.

Thanks again for the feedback.

One further question:

With the settings.  If I set moImagerSettings(SettingId.ImageSaveToFileEnabled) = True, does that cause a picture to be written away immediately or only when the trigger is pulled as I did try to put all the settings in one place but I found that I couldn't get the flash to turn on all of a sudden and pictures were being written out to disk before the trigger was being pulled when I called the routine to set all the settings at once.

I've found the zoom demo on the site and I've also located the imager .chm help file (Program Files\Psion\Imager SDK V15.1\Documentation) with the settings described.  I was searching the help file using the key word "ImageDownloadEnabled" which yeilded nothing, where as "SettingId_ImageDownloadEnabled" is what I should have been looking for.

Thanks once again.