Canon 6D Question about focus confirmation for manual focus lenses

I am very interested in the 6D. I own the 5D2 and concerning IQ there won't be much difference. But the loud and shaky shutter of the 5D2, the silent mode of the 6D respectively, lower weight, better ISO and smaller size would make the 6D a better camera. If I could have wished I wanted an even more purist and smaller 6D, no video, wifi and gps, however.
But I have a QUESTION: Will there be a focus confirmation on the focus points like the red confirmation flash there is with the 5D2? I like to shoot eg. with my small 40mm Voigtlander Ultron manual focus lens (just an excellent lens btw) and therefore highly appreciate this focus confirmation feature. If somebody already knows the answer, this would be very nice, thanks!
I got the impression Canon disadvantages manual focus lenses on their bodies, especially with the 5D3's new autofocus system (which is superb for autofocus lenses). Therefore I wish Canon would offer a reduced to the max fullframe body for manual focus shooters (what is a real passion for a growing number of photographers). Manual focus shooters need interchangeable focusing screens, focus confirmation on the focus point and live view. I guess Canon could be successfull with such a camera: the Canon IQ, especially the colors are excellent, the handling of a Canon is better than other brands, the overall package one gets with Canon is very good. There are so many outstandig MF lenses from Zeiss over Voigtlander to vintage lenses with adapters that are seeking the best FF body. And DSLR's are better than mirrorless cams but need to become smaller to make the size advantage of mirrorless cams irrelevant.
Thanks for reading, Dave.

The Canon 6D arrived today in Switzerland. The focus confirmation shows on the focus point and works well with Zeiss glass. We get the same focus finetuning like we had in the 5D2, what is important to align our Zeiss lenses. Besides, this is a nicely thought out camera. Smaller than one would expect from the factsheet numbers. The silent shutter mode is great. And there was a Hasselblad / Canon 6D comparison (beautyshooting), where I could not see a difference between the two on one of these big EIZO screens. The 6D is a reasonable camera, no show off factor. Better consider the 6D instead of the 5D3 if you are not a pro.

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Hi!
I need to perform an in-depth analysis of the overall system accuracy for a proposed system. I'm well underway using the extensive documentation in the start-menu National Instruments\NI-DMM\ and ..\NI-Switch\ Documenation folders...
While typing the question, I think I partially answered myself while cross-referencing NI documents... However a couple of questions remain:
If I connect a DMM to a 2 by X arranged switch/mux, each DMM probe will see twice the listed internal "Differential thermal EMF" at a typical value of 2.5uV and a max value of less than 12uV (per relay). So the total effect on the DMM uncertainty caused by the switch EMF would be 2*2.5uV = 5uV? Or should these be added as RSS: = sqrt(2.5^2+2.5^2) since you can not know if the two relays have the same emf?
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What would the accuracy of the 4071 DMM be, can I calculate it as follows, using 8.9uV +-700.16nV using 90 days and 8.9uV +- 700.16nV + 150nV due to "Additional noise error" assuming integration time of 1 (aperture) for ease of reading the chart, and a multiplier of 15 for the 100mV range. (Is this equivalent to averaging a reading of 1 aperture 100 times?)
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The below text includes what was going to be the post until I think I answered myself. I left it in as it is relevant to the problem above and includes what I hope to be correct statements. If you are tired of reading now, just stop, if you are bored, feel free to comment on the below section as well.
The problem I have is one of fully understanding part of this documenation. In particular, since a relay consists of (at least) 2 dissimilar metal junctions (as mentioned in the NI Switch help\Fundamentals\General Switching Considerations\Thermal EMF and Offset Voltage section) and because of the thermo-couple effect (Seebeck voltage), it seems that there would be an offset voltage generated inside each of the relays at the point of the junction. It refeers the "Thermocouple Measurements" section (in the same help document) for further details, but this is where my confusion starts to creep up.
In equation (1) it gives the expression for determining E_EMF which for my application is what I care about, I think (see below for details on my application).
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*MY answer to my own question:
By carefully re-reading the example in the thermocouple section of the switch, I realized that they calculate 2 EMF's, one for the internal switch, calculated as 2.5uV (given in the spec sheet of the switch as the typical value) and one for the actual thermocouple. I say actual, because I think my initial confusion stems from the fact that the documenation talks about the relay/switch junctions as thermocouples in one section, and then talks about an external "probe" thermocouple in the next and I got them confused.
As such, if I can ensure low temperatures inside the switch at the location of the junctions (by adequate ventilation and powering down latching relays), I should be able to use 2.5uV as my EMF from the switch module, or to be conservative, <12uV max (from data sheet of 2527 again).
I guess now I have a hard time believeing the 2.5uV typical value listed.. They say the junctions in the relays are typically an iron-nickel alloy against a copper-alloy. Well, those combinations are not explicitly listed in the documenation table for Seebeck coefficients, but even a very small value, like 0.3uV/C adds up to 7.5uV at 25degC. I'm thinking maybe the table values in the NI documentation reffers to the Seebeck values at 25C?
Project Engineer
LabVIEW 2009
Run LabVIEW on WinXP and Vista system.
Used LabVIEW since May 2005
Certifications: CLD and CPI certified
Currently employed.

Seebeck EMV needs temperature gradients , in your relays you hopefully have low temperature gradients ... however in a switching contact you can have all kind diffusions and 'funny' effects, keeping them on same temperature is the best you can do.
Since you work with a multiplexer and with TCs, you need a good Cold junction ( for serious calibrations at 0°C ) and there is the good place for your short cut to measure the zero EMV. Another good test is loop the 'hot junction' back to the cold junction and observe the residual EMV. Touching (or heating/cooling) the TC loop gives another number for the uncertainty calculation: the inhomogeneous material of the TC itself..
A good source for TC knowledge:
Manual on the use of thermocouples in temperature measurement,
ASTM PCN: 28-012093-40,
ISBN 0-8031-1466-4
(Page1): 'Regardless
of how many facts are presented herein and regardless of the percentage
retained,
all will be for naught unless one simple important fact is
kept firmly in mind.
The thermocouple reports only what it "feels."
This may or may not the temperature of interest'
Message Edited by Henrik Volkers on 04-27-2009 09:36 AM
Greetings from Germany
Henrik
LV since v3.1
“ground” is a convenient fantasy
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Hey WZZZ,
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I'm the de facto Mac guy at my kids' school and we have around 25 iMac Slot Loaders working there. You can imagine they get abused quite a bit. There are 10 running Garage Band in the Music Department. That puts a tremendous strain on the CPU and I'm actually surprised that they run it so well. My son had a 600 iMac running GarageBand, he was complaining that it was getting jumpy and when I looked at it he was running 10 unlocked tracks simultaneously! So now he has an eMac G4 800 and that of course runs a lot better.
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orausern wrote:
Hi,
I have a question on what is the focus or trend at a high level that can be seen in the way oracle has been delivering the data base. Among several things what can be summarized as a few technical focus areas. Can someone help? I think they are the following:
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2) Providing more and more features in the database (including oracle apex in database, regular expression support etc)
3) Exadata
4) Better managability with OEM
Can you help elaborate or suggest if this is appropriate?
ThanksI would echo what Sybrand has mentioned already. The way things are going , the focus is on two things IMO by Oracle. One, High Availability! Oracle corp wants to ensure with every upcoming release that the downtime , either planned or unplanned, must come down to its minimum value and there should not be almost anythign which would stop the business. There are tons of enhancements which we have seen in this manner and I am sure, there are going to be so many more upcoming.
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Microsoft Senior Exchange PFE
Blog:
http://blogs.technet.com/rmilne
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Note: Posts are provided “AS IS” without warranty of any kind, either expressed or implied, including but not limited to the implied warranties of merchantability and/or fitness for a particular purpose.

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Hello
Can someone please help me with the following question please.
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AAnotherUser__
AAnotherUser__

Hi,
how about making it an if/elseif statement?
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elseif item > 5 then
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Next
Cheers,
Fred
There's no place like 127.0.0.1

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