Archived posting to the Leica Users Group, 2003/07/26
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As for the ROM contacts, I read in a LF magazine a few years ago that
more use is made of the aperture setting being communicated than meets
the eye in the viewfinder, or the flash zoom setting.
From that article, this is what I understand:
- - the ROM chip records the actual measured full aperture value of the
lens which is passed on, to the camera directly or via a converter or
focussing module if using one. This way the camera knows what it's
wearing and its speed, to use this in calculating exposures.
- - the aperture setting is used to speed up the camera's operation, ie,
it takes less time for the aperture blades to reach their closed
position if being used at a wide aperture and the shutter timing will
be adjusted accordingly.
As I said, these points are my understanding from reading what was
translated technical speak
Do I notice any problems with my non ROM lenses vs my ROM lenses? No.
In my view my best lens is my only non ROM lens, being the f2.8 100mm
APO Macro Elmarit. A lens worth getting into Rs with. But the new 90
Summicron APO is looking good.
Regards, Rick Dykstra, 'Straya.
On Monday, July 21, 2003, at 11:31 AM, Tom Christiansen wrote:
> Folks,
>
> Now that the R9 has been on the market for a while it almost seems
> like people are willing to give you money for buying their new R8s...
> Maybe now is a good time to move into the Leica R system.
>
> I have a few questions:
>
> 1) I notice that some lenses are sold as 1 CAM, 2 CAM, and 3 CAM
> lenses. Which ones work with the R8?
>
> 2) I have seen several claims that you loose some functionality when
> using lenses without ROM contacts. Exactly what is communicated via
> those contacts and which functionality do you loose by not having the
> ROM contacts?
>
> 3) Are the 1 CAM, 2 CAM, 3 CAM lenses really just M lenses which have
> been retrofitted to fit the R system?
>
> 4) Is there any way to estimate the production date from the serial
> number on the bodies?
>
> 5) I understand that some of the early production R8 bodies had some
> bugs in them which were weeded out in the later production runs. Does
> anyone know of an approximate date of production or serial number for
> the start of the new, bug-free batches of R8's?
>
> 6) Any comments, concerns, user testimonials, common bugs on the
> camera or associated lenses?
>
>
> Thanks,
>
> Tom
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