 Tom McKinlay |
Stabilized Lenses - Worth the Money? Can anybody explain the operation and benefit from image stabalized lenses? Are they worth the money?
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Dave Syer |
I do not own one but its on my wish list. How they work is lenses with Image Stabilisation (IS) contain two vibration-detecting gyros - one to detect pitch (movement on a horizontal axis) and one to detect yaw (movement on a vertical axis). When these gyros detect movement, the information is transmitted to an in-built microprocessor. This in turn operates a moving coil to position the IS lens perfectly. The effect is to correct the angle of the light rays so that when they are projected onto a film the image is clear and free of the blur/camera shake. It has the overall effect of using a shutter speed two stops faster. Trust this helps. Are they worth the money? - I'll let you know when I've saved enough money.
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Jeff S. Kennedy |
Dave helped with the technical answer. I can help with the practical answer. I have owned the Canon 300mm f4 L IS lens for the last couple of years and I really like the IS feature. When I shoot 35mm I do so because it is light and gives me the ability to move around. Consequently, I rarely use a tripod. That's why I chose the IS. It has served me well. I have shot sharp handheld shots at shutter speeds as low as 1/30. That's a gain of 3 stops over what you might expect from a standard 300mm. I'm expecting my 70-200 f2.8 L IS lens any day now.
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Tom McKinlay |
Thanks Dave for the technical answer that was interesting. Thanks Jeff for the practical application. You have both convinced me to purchase one. Again thank you both.
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Penny Sanborn |
what type of shots ia the 300 mm best used for and how much technical knowledge do you need to use one (right) thanks penny
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