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Author Message   Wonloo Tinkerer Username: Wonloo Post Number: 24 Registered: 07-2010 Rating: N/A Votes: 0 Posted on Saturday, April 02, 2011 - 01:44 pm:    The movement of the blades should be very snappy. Here is a step you can try to clean the shutter. Get some Q-tip and naphtha (lighter fuel). Apply some drops of naphtha around the lens tube on the shutter blades. Fire the shutter at B speed several times. This should normally free the shutter up. The naphtha at this moment serves as both detergent and lubricant. After this, clean the blades with Q-tip and wait for the shutter to be completely dry then fire the shutter at different speeds. If you fire the shutter while the shutter is still wet, the naphtha may stick the blades together. Omega is a interesting 120 range finder. Have fun.