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>
> I have an October 2004 20D, and it has only locked up on me one
> afternoon during the use of one particular battery; an old and very-used
> battery. On no other days and on no other uses of that battery or any
> other battery has it locked up. I am up to folder 252 canon, which
> means I have taken 15,200 images.
> --
I'm a very heavy 20D user, about 30000 images in the last 6 months, but I
don't keep track any more. My body has frozen maybe 3 times, almost always
when the battery was very low or close to running out (I don't use the
batter grip). I don't think this points to any camera fault as such. It
doesn't bother me at all.

JJ

Considering I only have an IS lens at the moment, would be interesting to
see if I used a non-IS lens if it would come back or not.

Makes me wonder now if I want to go with the 70-200 IS USM or get it without
the IS.

I did try the ole, twist and reseat of the lens just to be sure. Will see
how it goes. I have a wedding to shoot tomorrow (non-professional mode).

Might be the signals coming from the autofocus or IS that the camera cannot
understand, does not know what to do and just throws up its hands.


"nk" <> wrote in message
news:AVhxe.1808$...
> Ed,
> I had the same problem with my 20d and the 70-300mm lens.
> I would shoot about 8 to 10 photos and the camera would lock up and I
> would get the ERR99 message. This only occurred with the 70-300mm lens.
> I sent the lens in for service and Cannon said they replaced the IS lens
> unit. The lens and camera now work fine.
>
> Nath
>
> Ed Velez wrote:
>
>> Here is my scenario:
>>
>> 1. 20D with 17-85 IS USM
>> 2. Sandisk 1gig Ultra II
>> 3. Shooting in continuous mode
>> 4. Shooting in AI SERVO mode
>> 5. Stopping inbetween to rezoom (camera downloading to CF card)
>> 6. ERR99 when I try to continue shots
>>
>> Have had the camera since April and no problems at all except for this
>> one situation. 99% of the time I shot in one shot focus and
>> non-continuous.
>>
>> My speculation is that there is some issue in regards to trying to read
>> and write at the same time as well as communicate to the lens during ai
>> servo mode. More like processing than any particular hardware issue. I
>> know that I have read many postings about CF cards, IS, pins on the lens,
>> firmware etc....and believe it to be more in regards to how the camera
>> itself can multi task and handle complex situations. The power users in
>> the group may experience this more (not that the casual user wont). If
>> anyone wants to help me with my thoughts by testing in the above way and
>> see if it happens more so than not, I'd be interested to hear about the
>> results. If more folks say that it just happens doing simple point and
>> shoot, then I declare I would be stumped.
>>
>>
>>
>> "John A. Stovall" <> wrote in message
>> news:...
>>
>>>On Fri, 1 Jul 2005 06:41:26 +0000 (UTC), "Joe" <>
>>>wrote:
>>>
>>>
>>>>Hi, The lockup problem was caused in some cases by using Lexar 80x cf
>>>>cards,
>>>>Lexar are changing all cards
>>>>http://www.dpreview.com/news/0506/05...r_80xcards.asp
>>>>
>>>
>>>The Lexar problem had nothing to do with lock up. It was about lost
>>>images.
>>>
>>>http://www.dpreview.com/news/0505/05...lexaralert.asp
>>>
>>>
>>>*********************************************** **********
>>>
>>>"A state, is called the coldest of all cold monsters.
>>>Coldly lieth it also; and this lie creepeth from its
>>>mouth: "I, the state, am the people." "
>>>
>>> _Thus Spake Zarathusttra_
>>> by Friedrich Nietzsche
>>> Chapter XI
>>> The New Idol
>>
>>

"JohnJ" <> wrote in message
news:42c5c4d8$0$20859$ u...
>
>>
>> I have an October 2004 20D, and it has only locked up on me one
>> afternoon during the use of one particular battery; an old and very-used
>> battery. On no other days and on no other uses of that battery or any
>> other battery has it locked up. I am up to folder 252 canon, which
>> means I have taken 15,200 images.
>> --
> I'm a very heavy 20D user, about 30000 images in the last 6 months, but I
> don't keep track any more. My body has frozen maybe 3 times, almost always
> when the battery was very low or close to running out (I don't use the
> batter grip). I don't think this points to any camera fault as such. It
> doesn't bother me at all.
>
> JJ

After getting my 20D back yesterday from Canon because of locking and CF
read problems, I've just taken 400+ shots this morning, RAW+large JPG, using
A-DEP AV P and "action" modes with 3 different teles, AI servo the lot.

The camera performed faultlessly. The problem happened a few times over 6
months. My photos are pretty average, nothing new there and not the
Camera's fault

With high volume products there will always be some problems here and there.
It depends how the Co performs when it happens. I'm happy so far.

Dave