Issues/Idea about threshold values

It seems we gotta decide how to go about fixing the threshold values for motion detection.
Some approaches -

• Fix it, keep it constant -- doesn't give flexibility to the user
• Let user select from
  
  • 3 levels of threshold, whatever suits best for the environment.
• Let the user select from the 2
  
  • 3 levels, and also
    
  • provide advanced options, for geeks and interested beings to set it optimally for their workplace.
• Or lets have
  
  • 3 levels of threshold for quick selection
  • an advanced option (slidebar/textbox) for advanced users to set it
  • A diagnostic style (question answer based) test to let user select the best
    Eg. asking the user to perform action, detect motion by increasing/decreasing the threshold on the basis of user feedback and fixing it as result of test
    

I believe 3rd option is good, but the 'question answer based' threshold fixing should be optional, same for 'advanced' option. Let the user see 3 levels of thresholds determined best by our experiments, by running the system under tubelight, window light, sunlight, evening, college etc.
And for seekers of perfection, the other 2 options.

Letme know your opinion over this...

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