I came across this - looks a very promising 'easy on easy off ' design with magnifier if required



http://www.camerabellows.com/Products_g.htm

also if you want to use your notebook as a field monitor then this might fit the bill

http://www.camerabellows.com/Products_f.htm

Hi John,

That looks a lot like what we already available here in the states from HoodMan USA.

http://www.hoodmanusa.com/HD-1CM.asp
http://www.hoodmanusa.com/digital_cameras.htm

Same type of idea, but more readily available and affordable for us here in the states as opposed to ordering from a company overseas. Most US photo retailers carry HoodMan products at this point.

Cheers,

- don