The camera monitors a switch on the lens mount. Each lens has a tab for mounting. On auto lenses, the tab is longer, thus triggering the switch. The tab is ...

i had just tried this evening using my new 1.4 teleconverter with EOS cameras attached to my scope and couldn't get the camera to work except with the ...

i have recently bought a canon eos xti dig camera. i enjoy taking action pics, but only as fun. i also got the ef 75-300mm f/4-5.6 III lens with it. my main ...

Explains the purpose of stacking teleconverters and how to calculating focal length, aperture, and aperture diameter.

[MOVED] Using auto teleconverters and auto extension tubes with manual lenses. This thread has been moved to the Lens: Canon forum. Click here to transfer ...

These teleconverters include front and rear lens caps, lens pouch, and instruction manual. The C-210 model even comes with a built-in lens hood that snaps into ...

Oct 4, 1999 · With a perfect converter 2x you increase by 4 the surface of smallest blurring so if your lens is only quite good, you will just increase the ...

Olympus C-160 1.45x H.Q. Converter produced this image. The magnification looks identical to the Olympus 1.45x Tele Conversion Lens above.

The lens comes with built-in lens hood that slides back and forth. The lens hood seems to be the most flimsy part on the lens, as it does not lock in place. If ...

The bellow allows a lens to be moved in respect to the focal plane of focusing. By moving the lens further away from the film (sensor) plane, you move its focal ...