an effect that can make some models of zoom lenses to slowly zoom in or out as a result of gravity. It is most likely to happen if the lens is pointed straight up or straight down, but a sharp angle can be enough. This effect can present problems for the photographer when pointing the camera in ...
I have the Sony 18-250mm lens. The lens is so loose that it doesn't keep a focal length, but slides down to the fullest extension with minimal downward slope. Is this standard or should I see a ...
I noticed this more than once. Whenever I'm in the range from 24mm to somewhere between 35mm and 50mm, the lens starts moving if I'm fixing it vertically with its front element facing the ceiling or ...
Looking for some pictures which certainly demonstrating this problem on Nikkor lenses. I am about to purchase the lens and want to be able to distinguish.
The Nikkor 18-200mm VR lens creeps until fully extended if pointed vertically down. This is preventing me from using it on a rostrum camera. Is there a piece of equipment or a simple (and non-...