Archived posting to the Leica Users Group, 2005/09/10

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Subject: [Leica] Weird: DMR and TTL works!
From: rdcb37 at dodo.com.au (Rick Dykstra)
Date: Sat Sep 10 14:19:13 2005
References: <A594B875-5719-43B1-87C3-2A1CBCB30385@dodo.com.au> <20050910124515.90122.qmail@web86202.mail.ukl.yahoo.com> <82c9dd7050910075567907087@mail.gmail.com> <82c9dd7050910092356291279@mail.gmail.com> <001201c5b62f$96e11a20$0400a8c0@dalmylt> <82c9dd705091011176374a100@mail.gmail.com>

Eric, might you not get better exposure (and perhaps flash) results  
by using the matrix metering setting (rectangle with dot - the middle  
setting) rather than the integral setting (open rectangle - on the  
right).

Rick.

On 11/09/2005, at 4:17 AM, Eric Korenman wrote:

> Yup - I've been reading it on and off for weeks. Stopped at page 96  
> or so.
>  Eric
>
>  On 9/10/05, David W. Almy <dalmy@comcast.net> wrote:
>
>>
>> Jim,
>>
>> If you haven't already, you should invest some time and read this  
>> thread,
>> now 104 pages long!
>>
>> http://www.fredmiranda.com/forum/topic/267995/0
>>
>> Exposure issues are discussed, in addition to many others related  
>> to using
>> the DMR.
>>
>> David W. Almy
>> Annapolis
>>
>> ----- Original Message -----
>> From: "Eric Korenman" <faneuil@gmail.com>
>> To: "Leica Users Group" <lug@leica-users.org>
>> Sent: Saturday, September 10, 2005 12:23 PM
>> Subject: Re: [Leica] Weird: DMR and TTL works!
>>
>>
>> Ok more TTL and DMR:
>> Did a portrait shoot this AM of a friend's little boy. DMR  
>> performed well
>> but I need to learn more my new digital existence.
>> 1) The DMR and R8 tends to blow out highlights in outdoor scenes when
>> there
>> a full range of direct sunshine and shadows. Found myself needing to
>> compensate by -1 to -2 stops. Got to wean myself of negative  
>> film's wide
>> latitude.
>> 2) Flash in TTL mode worked nicely indoors where the flash was  
>> providing
>> the majority of light.
>> 3) Flash in TTL mode in the outdoors failed miserably. I think my  
>> camera
>> got thrown into some weird mode - Everything was WAY overexposed.  
>> Even
>> after
>> I disconnected the flash I was getting insanely overexposed results.
>> Turning
>> the camera and DMR off, then back on seemed to fix it.
>> 4) Camera 'crashed' once. Locked up. I had to remove and replace the
>> battery. May have been the TTL thing. I am not sure.
>> I have shot about 200 exposures since I got back home - without  
>> flash. The
>> DMR seems to be working fine. More testing in a bright backyard  
>> makes me
>> think that I need to underexpose most daylight scenes by -1 stops.  
>> In full
>> daylight, and at zero exposure compensation the histograms show  
>> that the
>> DMR
>> does tend to blow out highlights.
>> BTW- I am using the full metering setting (the open rectangle).
>> Eric
>>
>> On 9/10/05, Eric Korenman <faneuil@gmail.com> wrote:
>>
>>>
>>> There have been reports that TTL and the DMR simply does not work  
>>> and
>>> switching the flash to TTL results in an error code in the R8  
>>> display.
>>> My R8 does not report an error code My R8 was just 'upgraded' by  
>>> Leica
>>>
>> NJ.
>>
>>> Perhaps the coding in the R8 rom has changed?
>>> Not sure.
>>> Eric
>>>
>>> On 9/10/05, FRANK DERNIE <frank.dernie@btinternet.com> wrote:
>>>
>>>>
>>>> If I remember correctly the reason why TTL hasn't
>>>> worked on digital cameras in the past is that the
>>>> reflectivity of the surface of the low pass filter is
>>>> very different from film, presumably varying in some
>>>> non linear way that nobody has so far been able to
>>>> adequately compensate for. Maybe now, without the low
>>>> pass filter, the sensor surface is more like film or
>>>> maybe, in the test pix in question, the error is
>>>> negligible and under some other conditions the
>>>> incorrect exposure may result.
>>>> Frank
>>>>
>>>> --- Rick Dykstra < rdcb37@dodo.com.au> wrote:
>>>>
>>>>
>>>>> Very interesting Eric. Lack off TTL flash control
>>>>> with the DMR has
>>>>> been a problem to my mind.
>>>>>
>>>>> I hope you can try it with longish lens on a subject
>>>>> that will really
>>>>> test the TTL.
>>>>>
>>>>> Rick.
>>>>>
>>>>> On 10/09/2005, at 1:03 PM, Jim Hemenway wrote:
>>>>>
>>>>>
>>>>>> Your "buyer's remorse" seems to be fading away.
>>>>>>
>>>>>> It took me much longer when I bought my house. :-)
>>>>>>
>>>>>> Jim
>>>>>>
>>>>>>
>>>>>> Eric Korenman wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>> As has been reported, I just assumed my DMR/R8
>>>>>>>
>>>>> would not work in
>>>>>
>>>>>>> TTL flash mode.
>>>>>>> I was testing out my Metz 32mz-3 with my DMR this
>>>>>>>
>>>>> evening (using
>>>>>
>>>>>>> SCA 2052 adapter).
>>>>>>> I have a portrait session tomorrow and I thought
>>>>>>>
>>>>> I do some shots
>>>>>
>>>>>>> with fill flash in "A" mode.
>>>>>>> I flip the flash into TTL to see what error code
>>>>>>>
>>>>> I would get..
>>>>>
>>>>>>> And I got none!
>>>>>>> Did some test shots (at night, indoors) and the
>>>>>>>
>>>>> TTL feature
>>>>>
>>>>>>> appears to work just fine.
>>>>>>> Am I nuts? Am I missing something thing?
>>>>>>> Adjusting the + / - dippy switches to effects
>>>>>>>
>>>>> exposure appropriately.
>>>>>
>>>>>>> I covered the flash's "eye" to see if I was in
>>>>>>>
>>>>> some odd "A" mode
>>>>>
>>>>>>> and the setup still worked.
>>>>>>> The flash seems to be truly in TTL mode.
>>>>>>> I will try it in AM daylight and report back.
>>>>>>> Eric
>>>>>>> _______________________________________________
>>>>>>> Leica Users Group.
>>>>>>> See http://leica-users.org/mailman/listinfo/lug
>>>>>>>
>>>>> for more information
>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Leica Users Group.
>>>>>> See http://leica-users.org/mailman/listinfo/lug
>>>>>>
>>>>> for more information
>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Leica Users Group.
>>>>> See http://leica-users.org/mailman/listinfo/lug for
>>>>> more information
>>>>>
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Leica Users Group.
>>>> See http://leica-users.org/mailman/listinfo/lug for more  
>>>> information
>>>>
>>>>
>>>
>>>
>>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>>
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
>>
>>
>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>
>


In reply to: Message from rdcb37 at dodo.com.au (Rick Dykstra) ([Leica] Weird: DMR and TTL works!)
Message from frank.dernie at btinternet.com (FRANK DERNIE) ([Leica] Weird: DMR and TTL works!)
Message from faneuil at gmail.com (Eric Korenman) ([Leica] Weird: DMR and TTL works!)
Message from faneuil at gmail.com (Eric Korenman) ([Leica] Weird: DMR and TTL works!)
Message from dalmy at comcast.net (David W. Almy) ([Leica] Weird: DMR and TTL works!)
Message from faneuil at gmail.com (Eric Korenman) ([Leica] Weird: DMR and TTL works!)