Internal focus

Perry (Perry.Mitchell@btinternet.com)
Thu, 1 Oct 1998 11:58:33 +0100

Several posters are getting in real deep with the XL-1 focus mechanism.
There seems to be some suggestion that lenses with an internal focus
mechanism cannot track whilst zooming - this is piffle!
My broadcast Canon 8 x 6 and many of its modern cousins and rivals often
use internal focus so that the lens front element is static and can
mount a filter holder.
Perry Mitchell