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Archive 2007 · ['NEW Fix' UPDATE!] - MkIII AF still broken

  
 
simonella_viru
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p.17 #1 · ['NEW Fix' UPDATE!] - MkIII AF still broken


oh jeez. Jeff, sorry about your problem. i hope you do give them an ear-full. not that it'll do much (from my experience).

i'm back to using my 5d. i haven't changed my technique or my lenses (mostly 35L, 85L), and the shots i took yesterday are GORGEOUS. sure, i had some out of focus shots, but everything was easily explained. i.e. my 5d is repeatable, predictable and dependable. qualities that the schizo 1d3 may never (for some people) possess by the sounds of it. now that 5d is a great camera!

good luck, all



Dec 22, 2007 at 09:17 AM
Jeff
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p.17 #2 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Incidentally, there certainly seems to be significant anecdotal evidence to suggest that some MkIII's are being repaired to a more functional state, so perhaps my camera only getting one part replaced (and not two) is the issue. Hopefully the next trip to VA will do the trick, at least for this errant AF issue...




Dec 22, 2007 at 09:53 AM
apdieb
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p.17 #3 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Need to post them with EXIF data...

EDIT: Nevermind. I see that the forum removes the EXIF...



Edited by apdieb on Dec 22, 2007 at 08:20 PM GMT



Dec 22, 2007 at 09:02 PM
apdieb
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p.17 #4 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Here is my attempt at the same series. However, the fact that I am using a DP can may be the difference..

1DMark III purchased in July.. S# 525xxx no submirror repair yet.

I have been happy with mine. I hope the repair does NOT hose mine...

I want that 1yr warranty extension and the ability to sell with fix later, otherwise I would forgo the fix.

These are all taken with the 70-200IS F2.8 handheld... F2.8 1/100th, ISO 1600 at 140mm.



Edited by apdieb on Dec 22, 2007 at 08:21 PM GMT

Edited by apdieb on Dec 22, 2007 at 08:22 PM GMT







Dec 22, 2007 at 09:15 PM
apdieb
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p.17 #5 · ['NEW Fix' UPDATE!] - MkIII AF still broken


#2









Dec 22, 2007 at 09:16 PM
apdieb
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p.17 #6 · ['NEW Fix' UPDATE!] - MkIII AF still broken


#3







Dec 22, 2007 at 09:16 PM
apdieb
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p.17 #7 · ['NEW Fix' UPDATE!] - MkIII AF still broken


100% crop.









Dec 22, 2007 at 09:28 PM
Tom_W
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p.17 #8 · ['NEW Fix' UPDATE!] - MkIII AF still broken


It's apparent that Dr. Pepper is more focused than Coca Cola, or at least more consistent.

Oddly, besides having a focus inconsistency, the Coke can has an odd look to it. Can't quite explain it, but the color is kind-of "splotchy" as if the image was noisy, and also downsized.



Dec 22, 2007 at 09:39 PM
Jeff
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p.17 #9 · ['NEW Fix' UPDATE!] - MkIII AF still broken


OK, here's some more from my 'fixed' MkIII. Center-point only, nothing fancy (this is a 100% crop!). Looks pretty good, right?

Edited by Jeff on Dec 22, 2007 at 08:44 PM GMT (Reason: added 100%)







Dec 22, 2007 at 10:29 PM
Jeff
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p.17 #10 · ['NEW Fix' UPDATE!] - MkIII AF still broken


And another from this afternoon, again, pretty good...







Dec 22, 2007 at 10:29 PM
Jeff
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p.17 #11 · ['NEW Fix' UPDATE!] - MkIII AF still broken


But, the one right before it, at f/2.8:







Dec 22, 2007 at 10:30 PM
Jeff
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p.17 #12 · ['NEW Fix' UPDATE!] - MkIII AF still broken


WTH? I just don't get this, and this is what is so mind-numbing about these MkIII issues! When it is good, it is so, so good, and when...

Anyway one more from this morning, just to make myself feel better...










Dec 22, 2007 at 10:35 PM
Mark Powell
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p.17 #13 · ['NEW Fix' UPDATE!] - MkIII AF still broken


The Coca Cola can sequence has that slight "shadow" where the white lettering meets the red can...just as RG's did in some of his shots, and just as my mark2s do in bright sunshine with a white jersey and a dark background.

The DP can does not have this, but it doesn't have as much contrast.

I really want Canon to fix these AF and shadow issues so I can buy a new camera or 2. I've had the money in my piggy bank for awhile, but I'm not breaking into it until they've got this stuff fixed.

Merry Christmas



Dec 22, 2007 at 10:48 PM
apdieb
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p.17 #14 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Ok.. Well here is a Coke can in the same situation.

minor exposure difference.
F2.8, 1/125th ISO1600 - Handheld - 70-200 at 160mm









Dec 22, 2007 at 11:04 PM
slau
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p.17 #15 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Well, here is a 6 shot series with my 70-200f2.8IS on tripod, Al Servo, Center AF point, 10 fps, ISO 800, 6 ft distance, 200 mm, f2.8, 1/80 sec. The EXIF of all files retained.

Full frame resized shot:
http://www.pbase.com/image/90674079/original.jpg

A series of 6 shots, 100% crop actual pixel without any post processing:
http://www.pbase.com/stephenl/image/90674080/original.jpg
http://www.pbase.com/stephenl/image/90674081/original.jpg
http://www.pbase.com/stephenl/image/90674082/original.jpg
http://www.pbase.com/stephenl/image/90674083/original.jpg
http://www.pbase.com/stephenl/image/90674084/original.jpg
http://www.pbase.com/stephenl/image/90674085/original.jpg


I don't see any problem with Al Servo on static objects @ 10 fps with my 1DMk3. As all EXIF are available, you are more than welcome to check each image. The cloest focus distance of the 70-200f2.8IS lens is 4.6 ft.

Stephen







Dec 23, 2007 at 01:48 AM
slau
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p.17 #16 · ['NEW Fix' UPDATE!] - MkIII AF still broken


In a real world shooting with my 1DMk3, the result can be amazing. I do have thousands of good image to show how capable the 1DMk3 is just from my recent trip to Bosque.

Here is a shot almost full frame with minimal cropping for composition.
Canon EOS-1D Mark III ,Canon EF 500mm f/4L IS USM
1/3200s f/5.0 at 500.0mm iso400
http://www.pbase.com/stephenl/image/89874779/original.jpg

Here is a 100% actual pixel crop of the same image without any post procesing:
http://www.pbase.com/stephenl/image/90675058/original.jpg

Btw, I have been using a -13 AF MicroAdjustment for my 500f4IS which improves the sharpness significantly.

Stephen



Dec 23, 2007 at 02:20 AM
Wickedfn4u
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p.17 #17 · ['NEW Fix' UPDATE!] - MkIII AF still broken


I can't believe the coke shots until I see Pepsi or diet Pepsi.


Dec 23, 2007 at 02:54 AM
Jeff
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p.17 #18 · ['NEW Fix' UPDATE!] - MkIII AF still broken


Red Grainger wrote:
Jeff,
When all is said and done, are you feeling that the only way Canon can deal with these issues is to shorten their product cycle and introduce a new series 1 body (Series 1 Mark IIIN)?


In short, no. Canon would alienate many, many photographers (both amateurs and pros alike) by choosing such an approach. If that's what happens, I will jump ship.



Dec 23, 2007 at 09:28 PM
Fred Miranda
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p.17 #19 · ['NEW Fix' UPDATE!] - MkIII AF still broken


In short, no. Canon would alienate many, many photographers (both amateurs and pros alike) by choosing such an approach. If that's what happens, I will jump ship.

We have you on record now!



Dec 23, 2007 at 10:56 PM
deadeyedick
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p.17 #20 · ['NEW Fix' UPDATE!] - MkIII AF still broken


My experiences with the 1D3 are mirrored in your images Jeff. When the camera works it is absolutely fabulous, and if Canon are able to make it work like that for every frame I will not hesitate in re-purchasing. I admire your diligence after all this time...mine ran out after four months of ownership.


Dec 23, 2007 at 11:31 PM
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