Issue with Canon Autofocus?

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I'm considering buying the Canon Digital Rebel XT. Someone suggested
that they may have heard that the autofocus on the camera doesn't work
as well as some of the other choices (such as the Pentax or the Nikon).
He had some difficulties, but he thinks it might also have been the
lens. How does the autofocus on that camera compare to similar cameras?

I've seen webpages like...
http://www.canon-dslr.com/
http://www.luminous-landscape.com/essays/canon-controversies.shtml
Have me wondering...
 
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In article <42F71E1C.9020102@yahoo.com>, David P. Summers
<drscience3000@yahoo.com> wrote:

> I'm considering buying the Canon Digital Rebel XT. Someone suggested
> that they may have heard that the autofocus on the camera doesn't work
> as well as some of the other choices (such as the Pentax or the Nikon).
> He had some difficulties, but he thinks it might also have been the
> lens. How does the autofocus on that camera compare to similar cameras?

If you disable all of the focus points except one, you should have no
problems.
 
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Randall Ainsworth wrote:
> In article <42F71E1C.9020102@yahoo.com>, David P. Summers
> <drscience3000@yahoo.com> wrote:
>
> > I'm considering buying the Canon Digital Rebel XT. Someone suggested
> > that they may have heard that the autofocus on the camera doesn't work
> > as well as some of the other choices (such as the Pentax or the Nikon).
> > He had some difficulties, but he thinks it might also have been the
> > lens. How does the autofocus on that camera compare to similar cameras?
>
> If you disable all of the focus points except one, you should have no
> problems.

Autofocus is a tool. It will focus on whatever is the most prominent
item in your shot. If you are behind a fence in a zoo and shot the
animal, the lens may focus on the fence instead of the animal. If you
are at a hockey game, behind the netting at the end of the rink, the
lens might focus on the netting instead of the action on the ice. You
have to know when to use the auto focus, and when to turn it off.

Auto focus is a tool.

roland
 
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"David P. Summers" <drscience3000@yahoo.com> wrote in message
news:42F71E1C.9020102@yahoo.com...
> I'm considering buying the Canon Digital Rebel XT. Someone suggested
> that they may have heard that the autofocus on the camera doesn't work
> as well as some of the other choices (such as the Pentax or the Nikon).
> He had some difficulties, but he thinks it might also have been the
> lens. How does the autofocus on that camera compare to similar cameras?
>

Depends on the lens.

> I've seen webpages like...
> http://www.canon-dslr.com/
> http://www.luminous-landscape.com/essays/canon-controversies.shtml
> Have me wondering...
>

Those have nothing to do with the Rebel XT. Are you just a troll?

Greg
 
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>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>that they may have heard that the autofocus on the camera doesn't work
>as well as some of the other choices

There was a problem with AF accuracy on some unquantified percent of
the 10D's but I've not seen anything mentioned about the Rebel having a
similar problem.
 
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"David P. Summers" <drscience3000@yahoo.com> wrote in message
news:42F71E1C.9020102@yahoo.com...
> I'm considering buying the Canon Digital Rebel XT. Someone suggested that
> they may have heard that the autofocus on the camera doesn't work as well
> as some of the other choices (such as the Pentax or the Nikon). He had
> some difficulties, but he thinks it might also have been the lens. How
> does the autofocus on that camera compare to similar cameras?
>
> I've seen webpages like...
> http://www.canon-dslr.com/
> http://www.luminous-landscape.com/essays/canon-controversies.shtml
> Have me wondering...
>

I would look to see if the actuator pin that moves the autofocus mirror is
plastic, or metal. The digital Rebel EOS 300d is plastic, and mine broke at
9000 shutter clicks. Not happy. I don't know if the XT is plastic or metal,
but supposedly the higher end cam's are metal. The function of the autofocus
is fine, its the long term durability I am questioning.
 
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David A wrote:

> I would look to see if the actuator pin that moves the autofocus mirror is
> plastic, or metal.

What "actuator pin" of what "autofocus mirror"? The only moving parts
in the system are the focus motors.

> The digital Rebel EOS 300d is plastic, and mine broke at
> 9000 shutter clicks. Not happy. I don't know if the XT is plastic or metal,
> but supposedly the higher end cam's are metal. The function of the autofocus
> is fine, its the long term durability I am questioning.

http://www.google.ca/search?hl=en&q=define%3AFUD&btnG=Google+Search&meta=
 

Stacey

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G.T. wrote:

>
> "David P. Summers" <drscience3000@yahoo.com> wrote in message
> news:42F71E1C.9020102@yahoo.com...
>> I'm considering buying the Canon Digital Rebel XT. Someone suggested
>> that they may have heard that the autofocus on the camera doesn't work
>> as well as some of the other choices (such as the Pentax or the Nikon).
>> He had some difficulties, but he thinks it might also have been the
>> lens. How does the autofocus on that camera compare to similar cameras?
>>
>
> Depends on the lens.
>
>> I've seen webpages like...
>> http://www.canon-dslr.com/
>> http://www.luminous-landscape.com/essays/canon-controversies.shtml
>> Have me wondering...
>>
>
> Those have nothing to do with the Rebel XT. Are you just a troll?
>


Of course he is, he didn't post "Damn my canon camera RULES!!!"!

How dare this guy ask a question here about a possible concern. Everyone
knows Canon has ZERO problems with their AF.

--

Stacey
 

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G.T. wrote:

>
> "Stacey" <fotocord@yahoo.com> wrote in message
>>
>> How dare this guy ask a question here about a possible concern. Everyone
>> knows Canon has ZERO problems with their AF.
>>
>
> Who cares when he's pointing to websites that have nothing to do with the
> Rebel XT?
>

They use the same lens right? People seem to blame AF problems on the lens
used rather than the body used so he has a valid concern IMHO.
--

Stacey
 
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In article <3lqdulF13ictmU2@individual.net>, Stacey
<fotocord@yahoo.com> wrote:

> They use the same lens right? People seem to blame AF problems on the lens
> used rather than the body used so he has a valid concern IMHO.

But then, we've already seen that you suffer from a severe case of DKS.
 
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On Mon, 08 Aug 2005 18:59:08 GMT, "David A" <Hoofr@verizon.net> wrote:

>
>"David P. Summers" <drscience3000@yahoo.com> wrote in message
>news:42F71E1C.9020102@yahoo.com...
>> I'm considering buying the Canon Digital Rebel XT. Someone suggested that
>> they may have heard that the autofocus on the camera doesn't work as well
>> as some of the other choices (such as the Pentax or the Nikon). He had
>> some difficulties, but he thinks it might also have been the lens. How
>> does the autofocus on that camera compare to similar cameras?
>>
>> I've seen webpages like...
>> http://www.canon-dslr.com/
>> http://www.luminous-landscape.com/essays/canon-controversies.shtml
>> Have me wondering...
>>
>
>I would look to see if the actuator pin that moves the autofocus mirror is
>plastic, or metal. The digital Rebel EOS 300d is plastic, and mine broke at
>9000 shutter clicks. Not happy. I don't know if the XT is plastic or metal,
>but supposedly the higher end cam's are metal. The function of the autofocus
>is fine, its the long term durability I am questioning.
>

So much for the durability and resiliency of polycarbonate versus
metal.
 
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"RichA" <none@none.com> wrote in message
news:eek:73gf1lsc0msqvuqpddvkdvkdrosr105vk@4ax.com...
> On Mon, 08 Aug 2005 18:59:08 GMT, "David A" <Hoofr@verizon.net> wrote:
>
> >
> >"David P. Summers" <drscience3000@yahoo.com> wrote in message
> >news:42F71E1C.9020102@yahoo.com...
> >> I'm considering buying the Canon Digital Rebel XT. Someone suggested
that
> >> they may have heard that the autofocus on the camera doesn't work as
well
> >> as some of the other choices (such as the Pentax or the Nikon). He had
> >> some difficulties, but he thinks it might also have been the lens. How
> >> does the autofocus on that camera compare to similar cameras?
> >>
> >> I've seen webpages like...
> >> http://www.canon-dslr.com/
> >> http://www.luminous-landscape.com/essays/canon-controversies.shtml
> >> Have me wondering...
> >>
> >
> >I would look to see if the actuator pin that moves the autofocus mirror
is
> >plastic, or metal. The digital Rebel EOS 300d is plastic, and mine broke
at
> >9000 shutter clicks. Not happy. I don't know if the XT is plastic or
metal,
> >but supposedly the higher end cam's are metal. The function of the
autofocus
> >is fine, its the long term durability I am questioning.
> >
>
> So much for the durability and resiliency of polycarbonate versus
> metal.

You're a tool, Rich, a real tool.

Greg
 
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G.T. wrote:
> "David P. Summers" <drscience3000@yahoo.com> wrote in message
> news:42F71E1C.9020102@yahoo.com...
>
>>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>>that they may have heard that the autofocus on the camera doesn't work
>>as well as some of the other choices (such as the Pentax or the Nikon).
>>He had some difficulties, but he thinks it might also have been the
>>lens. How does the autofocus on that camera compare to similar cameras?
>>
>
>
> Depends on the lens.

Are you saying it may have trouble with some lenses? Or that some
lenses have trouble? Or that there is not problem other than how some
people use some lenses?

>
>
>>I've seen webpages like...
>>http://www.canon-dslr.com/
>>http://www.luminous-landscape.com/essays/canon-controversies.shtml
>>Have me wondering...
>>
>
>
> Those have nothing to do with the Rebel XT.

Well, one didn't say, and the other was a predicesor model. If there
was a problem with a previous model, the question is, was it fixed? If
not, then that would say that what I've heard can be discounted...

>Are you just a troll?

I'm someone trying to figure out if a concern about a purchase is a real
issue. I don't know why using the internet has to mean someone will
question your motives even when you are being quite sincere.
 
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"David P. Summers" <drscience3000@yahoo.com> wrote in message
news:42F80647.6070907@yahoo.com...
>
>
> G.T. wrote:
> > "David P. Summers" <drscience3000@yahoo.com> wrote in message
> > news:42F71E1C.9020102@yahoo.com...
> >
> >>I'm considering buying the Canon Digital Rebel XT. Someone suggested
> >>that they may have heard that the autofocus on the camera doesn't work
> >>as well as some of the other choices (such as the Pentax or the Nikon).
> >>He had some difficulties, but he thinks it might also have been the
> >>lens. How does the autofocus on that camera compare to similar cameras?
> >>
> >
> >
> > Depends on the lens.
>
> Are you saying it may have trouble with some lenses?

Different lenses are slower to focus, or may not focus at all in dim light.
But you will know it.

> Or that some
> lenses have trouble? Or that there is not problem other than how some
> people use some lenses?
>
> >
> >
> >>I've seen webpages like...
> >>http://www.canon-dslr.com/
> >>http://www.luminous-landscape.com/essays/canon-controversies.shtml
> >>Have me wondering...
> >>
> >
> >
> > Those have nothing to do with the Rebel XT.
>
> Well, one didn't say, and the other was a predicesor model. If there
> was a problem with a previous model, the question is, was it fixed? If
> not, then that would say that what I've heard can be discounted...
>
> >Are you just a troll?
>
> I'm someone trying to figure out if a concern about a purchase is a real
> issue. I don't know why using the internet has to mean someone will
> question your motives even when you are being quite sincere.

If you were all that sincere you wouldn't be quoting web pages that have
nothing to do with the Rebel XT. The date on one is from 2004 long before
the XT was released, and the other is regarding the 10D, a camera that is
two revisions before the XT.

Greg
 
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Randall Ainsworth wrote:
> In article <42F71E1C.9020102@yahoo.com>, David P. Summers
> <drscience3000@yahoo.com> wrote:
>
>
>>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>>that they may have heard that the autofocus on the camera doesn't work
>>as well as some of the other choices (such as the Pentax or the Nikon).
>>He had some difficulties, but he thinks it might also have been the
>>lens. How does the autofocus on that camera compare to similar cameras?
>
>
> If you disable all of the focus points except one, you should have no
> problems.

So you feel the canon has not problems with focus, its just a matter of
some people not understanding how autofocus works? Why the attention on
canon (if this is common to all the cameras)? Because they are the most
popular?
 
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piperut wrote:
> Randall Ainsworth wrote:
>
>>In article <42F71E1C.9020102@yahoo.com>, David P. Summers
>><drscience3000@yahoo.com> wrote:
>>
>>
>>>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>>>that they may have heard that the autofocus on the camera doesn't work
>>>as well as some of the other choices (such as the Pentax or the Nikon).
>>>He had some difficulties, but he thinks it might also have been the
>>>lens. How does the autofocus on that camera compare to similar cameras?
>>
>>If you disable all of the focus points except one, you should have no
>>problems.
>
>
> Autofocus is a tool. It will focus on whatever is the most prominent
> item in your shot. If you are behind a fence in a zoo and shot the
> animal, the lens may focus on the fence instead of the animal. If you
> are at a hockey game, behind the netting at the end of the rink, the
> lens might focus on the netting instead of the action on the ice. You
> have to know when to use the auto focus, and when to turn it off.
>
> Auto focus is a tool.
>
So as I asked the previous poster, you feel the canon has not problems
with focus, its just a matter of some people not understanding how
autofocus works?

And you feel that people are focusing on Canon because they are the most
common?
 
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Bill Hilton wrote:
>>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>>that they may have heard that the autofocus on the camera doesn't work
>>as well as some of the other choices
>
>
> There was a problem with AF accuracy on some unquantified percent of
> the 10D's but I've not seen anything mentioned about the Rebel having a
> similar problem.
>

Thanks! Thats good to know.
 
G

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G.T. wrote:
> "David P. Summers" <drscience3000@yahoo.com> wrote in message
> news:42F71E1C.9020102@yahoo.com...
>
>>I'm considering buying the Canon Digital Rebel XT. Someone suggested
>>that they may have heard that the autofocus on the camera doesn't work
>>as well as some of the other choices (such as the Pentax or the Nikon).
>>He had some difficulties, but he thinks it might also have been the
>>lens. How does the autofocus on that camera compare to similar cameras?
>>
>
>
> Depends on the lens.

That isn't that useful. Are you saying it may have trouble with some
lenses? Or that some lenses have trouble? Or that there is no problem
other than how some people use some lenses?


>
>
>>I've seen webpages like...
>>http://www.canon-dslr.com/
>>http://www.luminous-landscape.com/essays/canon-controversies.shtml
>>Have me wondering...
>>
>
>
> Those have nothing to do with the Rebel XT.

Again, not giving any real help. These indicate a problem with a
predecessor model. Such problems can, esp. if not address, keep coming
up in later models? You feel that there may have been a problem with
previous models? Or do you just feel that one should be concerned with
problems in a similar model to what you are looking at?

>Are you just a troll?

I'm someone trying to figure out if a concern about a purchase is a real
issue.
Why do people, rather than look at why you might be sincere, try and
find reasons to be dismissive?
 
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In article <42F71E1C.9020102@yahoo.com>, drscience3000@yahoo.com says...
> I'm considering buying the Canon Digital Rebel XT. Someone suggested
> that they may have heard that the autofocus on the camera doesn't work
> as well as some of the other choices (such as the Pentax or the Nikon).
> He had some difficulties, but he thinks it might also have been the
> lens. How does the autofocus on that camera compare to similar cameras?
>
> I've seen webpages like...
> http://www.canon-dslr.com/
> http://www.luminous-landscape.com/essays/canon-controversies.shtml
> Have me wondering...

It's more of an issue of users expecting to much from any autofocus
system.

Use the center AF point and you won't have any problems.
--
http://www.pbase.com/bcbaird
 
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In article <o73gf1lsc0msqvuqpddvkdvkdrosr105vk@4ax.com>, none@none.com
says...
> >I would look to see if the actuator pin that moves the autofocus mirror is
> >plastic, or metal. The digital Rebel EOS 300d is plastic, and mine broke at
> >9000 shutter clicks. Not happy. I don't know if the XT is plastic or metal,
> >but supposedly the higher end cam's are metal. The function of the autofocus
> >is fine, its the long term durability I am questioning.
> >
>
> So much for the durability and resiliency of polycarbonate versus
> metal.

It probably wasn't polycarbonate, doofus.
--
http://www.pbase.com/bcbaird
 
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