| One of the oldest names in stabilization is Schwem, which introduced the Gyrozoom image stabilizer lens over 20 years ago. It has a zoom rage of 60-300 and is perfect for shooting from low frequency vehicles like a boat or car or high frequency vehicles such as helicopters (providing you want close images rather than wide). The Gyrozoom uses a gyroscope and prism to keep the camera level. It fits most 2/3 CCD ENG/EFP cameras to provide stabilization in a hand held environment.
There is quite an art to using the Schwem but the results can be phenomenal in its design conditions.
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