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Douglas

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Since: Apr 29, 2005
Posts: 1



(Msg. 1) Posted: Fri Apr 29, 2005 11:12 am
Post subject: How many 20Ds have had auto focus calibrated
Archived from groups: rec>photo>digital>slr-systems (more info?)
It's odd that I bought 2, 20Ds last year and both needed to have the back
focus calibrated. One focused forward of the focus point and the other aft
of it. I thought because they had similar serial numbers they might have
been from a "made on monday" batch but recently I've come across others
who also have focus problems and the latest 20D I bought is out of focus
too.

When I took this one back to Canon, the female I gave it to with
copies of the charts showing the problem couldn't have cared less when I
told her I couldn't afford to be without this 'new' camera for the
six weeks she quoted for the adjustment. I guess I'll have to decide to
either stand douwn one photographer or buy another camera for her and use
this as a spare when it comes back. This happened at Christmas and I don't
feel like repeating the fiascoe.

It seems to me thatCanon SLRs are poorly made and even more poorly
serviced - in Australia at any rate. Anyone have any experiences to add?

Douglas

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eawckyegcy

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Since: Feb 17, 2005
Posts: 220



(Msg. 2) Posted: Fri Apr 29, 2005 11:12 am
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Sheldon wrote:

> Now, now. Let's play nice.

Why? FUDsters need to be squished like the intellectual cucarachas
they are.

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eawckyegcy

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Since: Feb 17, 2005
Posts: 220



(Msg. 3) Posted: Fri Apr 29, 2005 3:21 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
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Douglas FUDdled:

> [... he owns a 1DMkII, an SD9, and 20D that he doesn't want to have
repaired
> because he has no backup, or something ...]
>
> [...]
>
> If someone gave me the choice of taking only one camera into the
jungle and
> I could choose from a SD9 or 20D, I'd take the SD9 based on the
performance
> and servicability I've had from the Canon's. The single most reliable
Canon
> I've had was a 10D and even this would often lock when I changed
lenses and
> need to be rebooted. My question was to discove if anyone else has
had these
> problems. The shutter activations of this camera are at 16,000 and
despite
> the glowing reports about these cameras, I have not found them to be
as
> reliable as their 35mm counterparts were/are.

In one hand, we have N million "glowing reports".

On the other hand, we have one (1) FUDster.
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fotocord

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Since: Jun 03, 2004
Posts: 1869



(Msg. 4) Posted: Fri Apr 29, 2005 11:49 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
Douglas wrote:

> It's odd that I bought 2, 20Ds last year and both needed to have the back
> focus calibrated.

How DARE you post a negative coment about a canon product. BURN HIM!!!

--

Stacey
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Bill Spanger

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Since: Mar 21, 2005
Posts: 11



(Msg. 5) Posted: Fri Apr 29, 2005 11:49 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
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Douglas

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Since: Mar 30, 2005
Posts: 28



(Msg. 6) Posted: Sat Apr 30, 2005 9:07 am
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Bill Spanger" <k7kkg RemoveThis @yahoo.com> wrote in message
news:b90671hn1kugqt1fv47avbe80e51ru5k18@4ax.com...
> On Fri, 29 Apr 2005 23:49:07 -0400, Stacey <fotocord RemoveThis @yahoo.com> wrote:
>>Douglas wrote:
>>
>>> It's odd that I bought 2, 20Ds last year and both needed to have the
>>> back
>>> focus calibrated.
>>
>>How DARE you post a negative coment about a canon product. BURN HIM!!!
>
> First we must test him, dunk him in the lake, if he drowns he is not a
> witch, if
> he doesn't drown he is a witch and must be burned!
>
>
And me... A deciple of EOS
Oh well, can't help bad luck!
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dfranks

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Since: Jan 12, 2005
Posts: 4



(Msg. 7) Posted: Sat Apr 30, 2005 12:42 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Douglas" <decipleofeos RemoveThis @yahoo.com> wrote in message
news:pan.2005.04.29.11.12.28.391000@yahoo.com...
> It's odd that I bought 2, 20Ds last year and both needed to have the back
> focus calibrated. One focused forward of the focus point and the other aft
> of it. I thought because they had similar serial numbers they might have
> been from a "made on monday" batch but recently I've come across others
> who also have focus problems and the latest 20D I bought is out of focus
> too.
>
> When I took this one back to Canon, the female I gave it to with
> copies of the charts showing the problem couldn't have cared less when I
> told her I couldn't afford to be without this 'new' camera for the
> six weeks she quoted for the adjustment. I guess I'll have to decide to
> either stand douwn one photographer or buy another camera for her and use
> this as a spare when it comes back. This happened at Christmas and I don't
> feel like repeating the fiascoe.
>
> It seems to me thatCanon SLRs are poorly made and even more poorly
> serviced - in Australia at any rate. Anyone have any experiences to add?
>
> Douglas

I wonder if some 20Ds have the autofocus sensor slightly higher or lower
than the target on the focussing screen, or is the vertical height of the
sensor large enough that it might focus on a line other than the one in the
vertical center of the frame? It seems that everyone who is reporting
problems with back focus is using a test chart slanted relative to the focal
plane. This would be a definate problem if the central, cross shaped sensor
is being used for the autofocus test.

It would seem like a more valid test to focus on a test target that is
parallel to the focal plane and then compare the blown-up auto and manual
focus digital images.

Dean
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musty

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Since: Sep 05, 2004
Posts: 148



(Msg. 8) Posted: Sat Apr 30, 2005 1:17 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
"Douglas" <decipleofeos.RemoveThis@yahoo.com> wrote in message
news:pan.2005.04.29.11.12.28.391000@yahoo.com...
> It's odd that I bought 2, 20Ds last year and both needed to have the back
> focus calibrated. One focused forward of the focus point and the other aft
> of it. I thought because they had similar serial numbers they might have
> been from a "made on monday" batch but recently I've come across others
> who also have focus problems and the latest 20D I bought is out of focus
> too.
>
> When I took this one back to Canon, the female I gave it to with
> copies of the charts showing the problem couldn't have cared less when I
> told her I couldn't afford to be without this 'new' camera for the
> six weeks she quoted for the adjustment. I guess I'll have to decide to
> either stand douwn one photographer or buy another camera for her and use
> this as a spare when it comes back. This happened at Christmas and I don't
> feel like repeating the fiascoe.
>
> It seems to me thatCanon SLRs are poorly made and even more poorly
> serviced - in Australia at any rate. Anyone have any experiences to add?
>
> Douglas

No focus problems here - sharp as hell. Infact I've had _zero_ problems with
my 20D since I bought it over 6mos ago.
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jps

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Since: Jun 02, 2004
Posts: 1777



(Msg. 9) Posted: Sat Apr 30, 2005 8:45 pm
Post subject: Re: How many 20Ds have had auto focus calibrated [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
In message <d50ofc$k85$1@inews.gazeta.pl>,
Alan Browne <alan.browne.DeleteThis@freelunchVideotron.ca> wrote:

>For focus/sharpness tests, the parallel to the film plane is the way to go.

But then, you really don't know if you're focused.

Personally, I like a 5 to 10 degree angle between the target and the
focal plane, because *something* is probably going to be in focus, and
if it isn't under the camera's focus point, then you know that the
system is miscalibrated.
--

<>>< ><<> ><<> <>>< ><<> <>>< <>>< ><<>
John P Sheehy <JPS.DeleteThis@no.komm>
><<> <>>< <>>< ><<> <>>< ><<> ><<> <>><
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