"lens barrel" is a correct term and can be used in written English.
It refers to the main cylindrical body of a camera lens where the optics are housed. Example: The photographer attached a lens barrel extender to increase the focal length of the lens for capturing distant objects.
More slots in the lens barrel.
The lens barrel is actually taller than the camera itself.
You can even adjust the firing rate in midshot by turning the lens barrel.
You even get a manual focus ring on the lens barrel, which comes in very handy.
What's not great is that on this camera, if you can believe it, the lens barrel actually blocks your view.
In a commerical lens these motions are encoded into curved slots in the sides of the lens barrel, as suggested by the patent application drawing at left.
Using a complex arrangement of mirrors and a secondary optical sensor, the Evolt E-330 has both an L.C.D. and an optical viewfinder that looks through the camera's barrel lens.
We checked the photos to ensure there were no spatial distortions caused by the lens, such as barrel or pincushion distortion.
That allowed the photographer to zoom and focus to have the best picture of the 8 incisors instead of using a fixed barrel lens, and allowed the examiners to view the photographs at different magnifications and angles, as they were able to do during the direct clinical examination.
The hole has been tapped to receive a standard tripod mount for a digital camera, affixed so that the lens points down the barrel's length.
The sleek X10 is a sophisticated compact digital camera that follows in the footsteps of the multi-award winning FUJIFILM X100, and it now combines a trim and refined blackout design, an easy-to-use manual barrel zoom lens and a traditional optical viewfinder with a wide 20° field of view for exceptional image composition.
