The true meaning of CRF

[designdog]

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I have noted the term “CRF” employed when discussing Leica cameras - film and digital. Edwin Puts is a big fan of the term.

But what is the real meaning? “Camera Range Finder”?

Anyone know?

Edited May 19, 2019 by designdog

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[earleygallery]

Coupled Range Finder.

It’s mostly irrelevant today and a throwback to the olden days when a lot of cameras had built in rangefinders that weren’t linked to the focus mechanism so you had to read the distance then set it on the lens.

[designdog]

Of course! Thanks much. Btw, I just received my copy of his book The Leica Path, which is quite good...

[Jerry Attrik]

Here is my offer for C.R.F.

As 'earleygallery' states ' Coupled Rangefinder ', but as the name implies such are coupled to the focusing mount of the camera and all the lenses made for it.  Well, perhaps not all; some very early Leitz lenses and the very long focus lenses designed for use with aids such as Visoflex or PLOOT; several 'third party' manufacturers lenses..  Typically the Leica screw mount two's and three's; the M2, M3, M4, M5 and M6 also  The Contax, Nikon and Kiev  Rangefinder  'look-alikes'.  There are many more.  Be aware that some 'Modern Digital' cameras have a 'manual focus' facility which uses the principal of the C.R.F. in the Infra-red auto rangefinder built in to the camera.

D.Lox.

Edited June 19, 2020 by Jerry Attrik
missing information from a previous post