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Archive 2006 · AF problem please help!

  
 
eduscho
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p.1 #1 · AF problem please help!


Hi All,

sorry for asking for your recomendation, but I have tried all I could :-(((

My first 1DN copy have to be returned to Canon. AF was WAY OFF with all my (on D60 nice working) lenses. The cam was practically not able to take one good focused frames. I have to wait more than 1 month for the excange.
I dosen't wanted to start out with a ~3500 EUR camera in a service.

Now I got another one (different SN#). Still have AF problems.
Sad, I only realy upgraded for the "super?" AF of the 1D from my D60.

Now I get OK focused shoots only in AI-SERVO AF mode. Even about static subjects. In ONE-SHOT AF mode I get (for me) untolerable high OOF rate.

I read the Manual, Canon EOS1D (.pdf) tipps and I had newer any problem with my focusing/framing habits on my D60.

What to do now?
Could you recomend any reliable service for (nedded?) AF calibration in
Austria. (Hungarian Canon service had bad fame )

Thx
Eduscho



Jan 01, 2006 at 05:12 PM
mbohunsky
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p.1 #2 · AF problem please help!


Are you choosing the focus point or are you letting the camera choose?


Jan 01, 2006 at 05:30 PM
eduscho
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p.1 #3 · AF problem please help!


Hi Milan,

No, I choose/use only the center (1) AF point, still no luck.
In ONE-SHOT AF i get the green confirmation too.

17-40 terrible OOF
50/1,8 same OOF
24-70 so-so (tendency for front-focus?, still not sure)




Jan 01, 2006 at 05:45 PM
mbohunsky
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p.1 #4 · AF problem please help!


Are the pictures out of focus in the viewfinder? If so, did you check the diopter adjustment? I don't know what else it could be


Jan 01, 2006 at 05:53 PM
eduscho
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p.1 #5 · AF problem please help!


In the viewfinder it looks OK, on the LCD I suspect zoomed in it is sh..t and on the monitor it is really way OOF.

It can't be motion blur, the flash fotos show the same tendency:
AI SERVO fine, ONE SHOT oof.

I can email you samples. But don't want you to bother.
(the CR2s are huge, but you can see even on downsized ones what I mean)

I know ther is a solution (my last hope is a good service or a 3rd 1DN copy).
Still I only read about Canon's QC horror I didn't believed it, but now :-(



Jan 01, 2006 at 06:06 PM
mbohunsky
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p.1 #6 · AF problem please help!


Sounds like it's an honest camera malfunction and I don't see how else it can be resolved other than sending it back again.


Jan 01, 2006 at 06:07 PM
Brooke Clyde
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p.1 #7 · AF problem please help!


This is confusing, because you seem to know what you're doing, yet I can't believe that you'd get 2 defective 1D2 bodies.

Could you show us an example, with EXIF and an explanation of where the AF point was?



Jan 01, 2006 at 06:08 PM
eduscho
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p.1 #8 · AF problem please help!


Hi Brooke,

Here there are:

http://rapidshare.de/files/10226942/1DN_AF_problem_Eduscho.zip.html

Not too scientific setup, maybe even hard for AF lock (lots of shiny spots), but still comparable scenes.

In AiServo OK (..157) and in OneShot (..158) OOF. No reframing done, center one AF used.
My upload speed is limited, so these are not the CR2s.

Thanx again.
Eduscho



Jan 01, 2006 at 06:53 PM
eduscho
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p.1 #9 · AF problem please help!


Apropo.
Does the "diopter adjustment" anithing to do with AF?



Jan 01, 2006 at 07:02 PM
uz2work
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p.1 #10 · AF problem please help!


Eduscho,
Is there any chance that, in one-shot mode, you are doing focus and recompose, because, depending on your aperture and depth of field, you
could be getting a parallax focusing error. That would account for why you
are having trouble in one-shot but not in servo mode.
Also, you might want to open up your pictures in EOS Viewer Utility and select the operation that allows you to see which focus point was active and where it was on the picture. That will allow you to confirm whether the camera was focusing where you thought it was. If the active focus point is where you thought it was, but that spot is not in focus and you focused and recomposed, I'd guess that there is a good chance that you do have a parallax focus error.
Les



Jan 01, 2006 at 07:04 PM
Brooke Clyde
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p.1 #11 · AF problem please help!


I'll post eduschu's photos. First "bad_AF" ...



Jan 01, 2006 at 07:11 PM
Brooke Clyde
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p.1 #12 · AF problem please help!


Now, "good_AF" ...



Jan 01, 2006 at 07:12 PM
Brooke Clyde
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p.1 #13 · AF problem please help!


A couple of things come to mind. First, that might be a hard subject for the AF. Ought to do better than that, though.

Second, you're shooting at 1/60 of a second, which might lead to camera shake (though it ought to be OK for 35mm on the 1D). I mention camera shake because it doesn't seem that anything is in focus, whereas with front- or back-focus you do get a plane of focus (albeit it the wrong place).



Jan 01, 2006 at 07:15 PM
eduscho
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p.1 #14 · AF problem please help!


Hi Les,

I think you mean somethink like this:

http://www.outbackphoto.com/workshop/phototechnique/essay06/essay.html

(It took me a while finding it again)

But I intentionally didn't "reframe" to reproduce this AF-phenomen.

Any repected service in Austria/Slovenia?
Thx
Eduscho



Jan 01, 2006 at 07:21 PM
eduscho
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p.1 #15 · AF problem please help!


Hi Brooke,

Thanks for pic-upload.
You are right I took it at 1/60 sec. but the real exposure is determined by the flash (it should be somwhere 1/10.000 sec or even shorter).
The ambient light wasn't enough.

I have more similar AF-twins shoots.

Thx.
Eduscho



Jan 01, 2006 at 07:30 PM
Eoin
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p.1 #16 · AF problem please help!


I agree with Brook, f/2.8 @ 1/60 would not rule out camera shake.

Eduscho, do you have any UV filters on your lenses?, if so remove them just for testing. Also try to find a better subject in better light and try AF with center point and AI-Servo and MF with focus conformation(green light) and all on the center focus point. Check the images in EOS viewer and click on the focus icon to see if you actualy have that focus point illuminated. It is possable to take a shot without focus lock.



Jan 01, 2006 at 07:35 PM
Eoin
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p.1 #17 · AF problem please help!


If you want to increase the shutter speed for flash, put the camera in M mode and dial in 1/200 shutter speed and f/4 and let your EX flash provide the light


Jan 01, 2006 at 07:38 PM
eduscho
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p.1 #18 · AF problem please help!


Hi Eoin

an HOYA UV filter is really on.
Interesting when a plain windowglas (not a polarizer) cause this. But thanks I'll try it too.

click on the focus icon to see if you actualy have that focus point illuminated

Where is this icon/menu option in DPP v2037? I can't find it. (only in Breez Browser)

At daylight I'll take further shoots under more controlled conditions.

Still I don't gave up.
Eduscho



Jan 01, 2006 at 07:46 PM
uz2work
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p.1 #19 · AF problem please help!


eduscho wrote:
click on the focus icon to see if you actualy have that focus point illuminated

.
Eduscho


It is in EOS Viewer Utility, not DPP. There is a button you click above the opened image, and it will illuminate the active focus point.
Les





Jan 01, 2006 at 07:52 PM
Eoin
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p.1 #20 · AF problem please help!


The focus point indicator is only available in EOS Viewer utility, I'm not sure if you got a copy with the 1DN but it can be downloaded form the canon site.

I just suggest you do not use the UV for the test, 1 less item that can cause a problem. There have been some posts here about people having focus issues with some wide angle zooms which disapeared after removing the UV filters.

It seems strange you have this same problem with 2 1DN's yet your lenses are ok on your other body. I would be a little upset after spending €3500 and waiting for a replacement to have the same problem. Just try to eliminate the usual suspects such as shallow depth of focus with large f/stops and slow shutter speeds and use good contrast shooting subjects. I'll catch up with you tomorrow to see how you got on.





Jan 01, 2006 at 08:23 PM





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