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On 07/22/19 11:39 AM, Jan Steinman <Jan@xxxxxxxxxxxxxx> wrote:
>
> > From: Peter Klein <boulanger.croissant@xxxxxxxxx>
> >
> > Leica M cameras and lenses have no chips and electrodes to tell the camera
> > who the lens is.
>
That was true as far back as November 1960 being the month my single wind was
made :-)
jh
>
> Newer lenses have a 6-bit code of black and white dots on the mount that are
> read by an IR sensor.
>
> Fascinating!
>
> I shoot a lot of non-native glass, and even though the OM-D E-M1.2 allows you
> to pre-enter lens EXIF data that you can later select via menu, there's only
> ten menu slots, which you quickly use up if you have both speed boosters and
> teleconverters, and it is tedious and error-prone to enter new data by
> selecting each character via the arrow keys.
>
> If you go out with two lenses, a focal reducer, and 1.4x and 2.0x
> teleconverters, you've used up almost all the slots. And if you name a lens
> slightly differently ("Hmmm... did I call that 'OMZ' or 'Olympus OM' or...
> and did that telecon have a space before the '1.4x' or was it no space and
> 'x1.4?'") then you can't search in your DAM for all the shots taken with the
> same combo. So I'd LOVE the ability to paint little dots on lenses and have
> EXIF data automagically!
>
> I imagine Leica has a patent on this, and thugs in brown shirts will soon
> come for a visit, and take away your paint brushes. :-) Or at least, void
> your warranty.
>
> Jan
>
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