Problem with Canon Digital Rebel XT
Verizon
to Hawaii & shot a lot of photos. When I examined them, I found some darker
spots on many of the images, especially of blue sky. I then went back and
took a series of plain blue sky images (both JPG & Raw) with 3 different
lenses (with & without my skylight filter). The spots appeared in the same
position on all of the images.
I spoke to Canon & they said that there was probably dust on the sensor. I
cleaned it & nothing changed. I read about Hot Pixels, so I took a 25 second
photo with the lens cap on - but no spots appeared. I took a picture of a
white wall inside my house - no spots appeared.
Can anyone assist me with this problem? The camera is still under warranty
so I could send it back to Canon. But I hate to lose the camera for a couple
weeks if there is nothing wrong with it.
I have posted a photo with the spots marked at:
http://lbdassociates.com/auctions/Canon%20Spots.htm
Any advice would be appreciated. Thanks in advance.
--
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Dolph
> I bought a Canon Digital Rebel XT a few months ago. I recently took a trip
> to Hawaii & shot a lot of photos. When I examined them, I found some darker
> spots on many of the images, especially of blue sky. I then went back and
> took a series of plain blue sky images (both JPG & Raw) with 3 different
> lenses (with & without my skylight filter). The spots appeared in the same
> position on all of the images.
>
>
>
> I spoke to Canon & they said that there was probably dust on the sensor. I
> cleaned it & nothing changed. I read about Hot Pixels, so I took a 25 second
> photo with the lens cap on - but no spots appeared. I took a picture of a
> white wall inside my house - no spots appeared.
>
>
>
> Can anyone assist me with this problem? The camera is still under warranty
> so I could send it back to Canon. But I hate to lose the camera for a couple
> weeks if there is nothing wrong with it.
>
>
>
> I have posted a photo with the spots marked at:
>
> http://lbdassociates.com/auctions/Canon%20Spots.htm
>
>
>
> Any advice would be appreciated. Thanks in advance.
I had the same experience with my Rebel. I returned it to Canon (finding
the nearest agent via the web). They confirmed it was spots and cleaned the
sensor within a few days at no charge, even though it was out of warranty!
All Things Mopar
>> I bought a Canon Digital Rebel XT a few months ago. I
>> recently took a trip to Hawaii & shot a lot of photos.
>> When I examined them, I found some darker spots on many of
>> the images, especially of blue sky. I then went back and
>> took a series of plain blue sky images (both JPG & Raw)
>> with 3 different lenses (with & without my skylight
>> filter). The spots appeared in the same position on all of
>> the images.
>>
>> I spoke to Canon & they said that there was probably dust
>> on the sensor. I cleaned it & nothing changed. I read
>> about Hot Pixels, so I took a 25 second photo with the
>> lens cap on - but no spots appeared. I took a picture of a
>> white wall inside my house - no spots appeared.
>
> I had the same experience with my Rebel. I returned it to
> Canon (finding the nearest agent via the web). They
> confirmed it was spots and cleaned the sensor within a few
> days at no charge, even though it was out of warranty!
I've fortunately not seen this yet in my new Rebel, and I've
taken almost 3,000 pics. I'm not obliquely taking a shot at the
OP, but I can't imagine going to Hawaii before making sure the
camera was OK, not to mention hundreds and hundreds of test
shots to be sure that my "once in a lifetime" pictures, were.
--
ATM, aka Jerry
Verizon
What is the AA filter?
--
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"Ed Ruf (REPLY to E-MAIL IN SIG!)" <egruf_...@cox.net> wrote in message
news:h7j7v15m4m2lod2st...@4ax.com...
> On Thu, 16 Feb 2006 00:28:30 GMT, in rec.photo.digital.slr-systems
> "Verizon" <sale...@lbdassociates.com> wrote:
>
>
>>I spoke to Canon & they said that there was probably dust on the sensor. I
>>cleaned it & nothing changed. I read about Hot Pixels, so I took a 25
>>second
>>photo with the lens cap on - but no spots appeared. I took a picture of a
>>white wall inside my house - no spots appeared.
>
> Set f/22 and take a picture of the sky. This will show you dust on the
> sensor, or more specifically the AA filter. How'd you clean the senor,
> just
> blowing?
> --
> Ed Ruf Lifetime AMA# 344007 (Use...@EdwardG.Ruf.com)
> http://edwardgruf.com/Digital_Photography/General/index.html
Verizon
which is primarily where the spots are noticable. Fortunately, I go to
Hawaii every couple years so it is not a "once in a lifetime" photo
opportunity. Also - the defect is not noticable on all photos - once again
very fortunate.
--
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"All Things Mopar" <nuno...@beez.wax> wrote in message
news:Xns976BDA6E...@216.196.97.131...
Battleax
"All Things Mopar" <nuno...@beez.wax> wrote in message
news:Xns976BDA6E...@216.196.97.131...
Brialliant problem solving jerry, nice work
Battleax
"Verizon" <sale...@lbdassociates.com> wrote in message
news:8LSIf.77456$_D1.10503@trnddc03...
>I cleaned the sensor the way the book said. I used a rubber puff blower.
>What is the AA filter?
>
it may need more than just a blow, possibly contact cleaning with the
correct procedure.
Bella Jones
Just to say that I have this problem too. I got the camera just before
xmas. I thought it was something on the lens at first. It comes up in
the same place, with blue sky.
If a blower didn't work, would it be best to give it to a shop/Canon to
clean? I don't fancy messing with this by hand, as this is my first
DSLR.
--
bellajonez at yahoo dot co dot uk
All Things Mopar
> I had taken many pictures but not very many with blue sky
> and blue water - which is primarily where the spots are
> noticable. Fortunately, I go to Hawaii every couple years
> so it is not a "once in a lifetime" photo opportunity. Also
> - the defect is not noticable on all photos - once again
> very fortunate.
OK. Sorry for the slam. My interest and problem is flash
photography of cars in museums, so I made damn sure I bought
from a store that would take it back.
I'll assume from your reply that you weren't able to test drive
blue sky, probably because there wasn't any. While I was
evaluating my Rebel, in two car museums, I longed for a sunny
day to try daylight general photography and cars outdoors. Not.
From December 26 to when my "trial" ran out, there was nary a
ray of sun in Michigan.
--
ATM, aka Jerry
All Things Mopar
> Brialliant problem solving jerry, nice work
I apolgized to the OP, yet it might've saved a lot of heartache
to have at least tried to do a hot pixel test or other testing
of a broad spectrum of shooting situations, even if there were
no sunny days prior to flying to Hawaii. Also, hindsight is
always 20/20 while the crystal ball is always cloudy. So, the OP
might not have thought of trying a light blue background, nor
had any clue that some vintage Rebel's had a problem.
I believe in the 6 P Principle - "Proper Planning Prevents Piss
Poor Performance". The OP's challenge now is to salvage the bad
pictures. Getting the camera repaired is clearly secondary.
--
ATM, aka Jerry
All Things Mopar
hand
>> >I cleaned the sensor the way the book said. I used a
>> >rubber puff blower. What is the AA filter?
>> >
>> it may need more than just a blow, possibly contact
>> cleaning with the correct procedure.
>
> Just to say that I have this problem too. I got the camera
> just before xmas. I thought it was something on the lens at
> first. It comes up in the same place, with blue sky.
>
> If a blower didn't work, would it be best to give it to a
> shop/Canon to clean? I don't fancy messing with this by
> hand, as this is my first DSLR.
My Rebel cost $900. I wouldn't relish sending it off for repair,
so I bought an extended warranty from Ritz Camera which will
make it easier. That said, unless I was leaving town again, I
would send the camera in for repair rather than risk even more
damage by rummaging around with a can of air and Q-tips, both of
which can irreparably damage the sensors and result in needing
to eBay the now-broken camera.
--
ATM, aka Jerry
Verizon
seen at other exposures. Does that mean that it is dust??
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FOR SCENIC, NATURE PHOTOGRAPHS OF HAWAII, WATERFALLS, RAINBOWS & MORE
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news:h7j7v15m4m2lod2st...@4ax.com...
> On Thu, 16 Feb 2006 00:28:30 GMT, in rec.photo.digital.slr-systems
> "Verizon" <sale...@lbdassociates.com> wrote:
>
>
>>cleaned it & nothing changed. I read about Hot Pixels, so I took a 25
>>second
>>photo with the lens cap on - but no spots appeared. I took a picture of a
>>white wall inside my house - no spots appeared.
>
Bella Jones
> Today Bella Jones commented courteously on the subject at
> hand
> >> it may need more than just a blow, possibly contact
> >> cleaning with the correct procedure.
> >
> > Just to say that I have this problem too. I got the camera
> > just before xmas. I thought it was something on the lens at
> > first. It comes up in the same place, with blue sky.
> >
> > If a blower didn't work, would it be best to give it to a
> > shop/Canon to clean? I don't fancy messing with this by
> > hand, as this is my first DSLR.
>
> My Rebel cost $900. I wouldn't relish sending it off for repair,
> so I bought an extended warranty from Ritz Camera which will
> make it easier. That said, unless I was leaving town again, I
> would send the camera in for repair rather than risk even more
> damage by rummaging around with a can of air and Q-tips, both of
> which can irreparably damage the sensors and result in needing
> to eBay the now-broken camera.
Hmm, well, having just done some tests - blue sky, and white photoshop
document on the computer - and improved things with a blower (Giotto
rocket) that I just got from Jessops (London), there remains an
immovable speck, right near the middle of the sensor, visible to the
naked eye. Bad little blob at f32, visible at f13, have to know it was
there at f10. Grargh! Plainly clear in the viewfinder as well...
All Things Mopar
hand
> Hmm, well, having just done some tests - blue sky, and
> white photoshop document on the computer - and improved
> things with a blower (Giotto rocket) that I just got from
> Jessops (London), there remains an immovable speck, right
> near the middle of the sensor, visible to the naked eye.
> Bad little blob at f32, visible at f13, have to know it was
> there at f10. Grargh! Plainly clear in the viewfinder as
> well...
How can you see sensor spots on the "ground glass" finder on a
DSLR? It'd to be really big blobs, not just spots, to "spot"
them in the Rebel's very small LCD.
As to intentionally small apertures, while I think that's
helpful to force the issue, then you backed off to f/13 to see
if it was still there. Again, I don't have this, thankfully, but
my apertures are rarely smaller than f/8, so isn't your test
contrived, as are lab tests of new camera or those being repair.
I'm not disputing anyone since I am a newbie to DSLRs, so please
don't take my comments as derogatory or insulting.
--
ATM, aka Jerry
Mike Rooney
directions.....sounds like you just have some spots on the sensor
filter......after cleaning with Eclipse, use your blower to make sure the
filter is dry then do some test shots against a blue sky at f/11 or smaller.
Hope this helps.
Mike
"Verizon" <sale...@lbdassociates.com> wrote in message
news:OGPIf.19373$CZ4.5937@trnddc05...
Robert Brace
"Bella Jones" <m...@privacy.net> wrote in message
news:1hauu8a.1kahku11ic715cN%m...@privacy.net...
If you see a blob while looking through the viewfinder, that particular blob
certainly isn't on the sensor (or rather the AA filter).
Bob
Verizon
--
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"Robert Brace" <rlb...@shaw.ca> wrote in message
news:JK2Jf.19447$B94.18246@pd7tw3no...
Charles Schuler
>I took the picture at F22 as suggested, and saw the same spots that I had
>seen at other exposures. Does that mean that it is dust??
Yes.
Bella Jones
> Today Bella Jones commented courteously on the subject at
> hand
>
> > Hmm, well, having just done some tests - blue sky, and
> > white photoshop document on the computer - and improved
> > things with a blower (Giotto rocket) that I just got from
> > Jessops (London), there remains an immovable speck, right
> > near the middle of the sensor, visible to the naked eye.
> > Bad little blob at f32, visible at f13, have to know it was
> > there at f10. Grargh! Plainly clear in the viewfinder as
> > well...
>
> How can you see sensor spots on the "ground glass" finder on a
> DSLR? It'd to be really big blobs, not just spots, to "spot"
> them in the Rebel's very small LCD.
Good point - even as I sent that post, I knew I should have deleted that
bit. What a giveaway...
> As to intentionally small apertures, while I think that's
> helpful to force the issue, then you backed off to f/13 to see
> if it was still there. Again, I don't have this, thankfully, but
> my apertures are rarely smaller than f/8, so isn't your test
> contrived, as are lab tests of new camera or those being repair.
Well, I might well go higher than f/10 at times. If I came upon this
pretty sight -
<http://www.luminous-landscape.com/1photo-pages/t/tumbleweed_dunes.shtml
> - which OK is unlikely in London, it would probably be blobbed.
(Original article, bit about 'Sunny 16':
<http://www.luminous-landscape.com/tutorials/understanding-series/unders
tandexposure.shtml>)
Incidentally, when might someone use f/32? I suppose one advantage of a
smaller aperture is that the blobs will also be smaller, albeit darker,
and therefore easier to patch in Photoshop.(?)
Bella Jones
> "Bella Jones" <m...@privacy.net> wrote in message
> news:1hauu8a.1kahku11ic715cN%m...@privacy.net...
> > All Things Mopar <nuno...@beez.wax> wrote:
> >
> >
> > Hmm, well, having just done some tests - blue sky, and white photoshop
> > document on the computer - and improved things with a blower (Giotto
> > rocket) that I just got from Jessops (London), there remains an
> > immovable speck, right near the middle of the sensor, visible to the
> > naked eye. Bad little blob at f32, visible at f13, have to know it was
> > there at f10. Grargh! Plainly clear in the viewfinder as well...
> If you see a blob while looking through the viewfinder, that particular blob
> certainly isn't on the sensor (or rather the AA filter).
Yep - I feel a bit dumb now. :-) Great, so I have dust on the sensor
*and* the viewfinder. But how did it get on the viewfinder, and how can
I get rid of it I wonder...?
Jon B
<waves>
Just hope it isn't inside the prism, or it will be a service job to fix.
Hopefully it is on the mirror, the focus screen above the mirror, or on
the eyepiece :)
Having read this lot think I'm going to have to do some test shots this
weekend.
--
Jon B
Above email address IS valid.
<http://www.bramley-computers.co.uk/> Apple Laptop Repairs.
Bella Jones
> Bella Jones <m...@privacy.net> wrote:
>
> > Robert Brace <rlb...@shaw.ca> wrote:
> >
> > > If you see a blob while looking through the viewfinder, that
> > > particular blob certainly isn't on the sensor (or rather the AA
> > > filter).
> >
> > Yep - I feel a bit dumb now. :-) Great, so I have dust on the sensor
> > *and* the viewfinder. But how did it get on the viewfinder, and how can
> > I get rid of it I wonder...?
>
> <waves>
> Just hope it isn't inside the prism, or it will be a service job to fix.
>
> Hopefully it is on the mirror, the focus screen above the mirror, or on
> the eyepiece :)
<waves back>
Just had a blow at those bits. No change. Bollocks. But it isn't
awful, just slightly distracting.
> Having read this lot think I'm going to have to do some test shots this
> weekend.
I feel a bit of a twat with this thing stuck on the sensor. Until I
brave sorting it all out, I shall adopt the pose of 'All apertures
smaller than f/8 are for wimps'. That will be my story, and I shall
stick to it. :-)
Jon B
> Jon B <black...@jonbradbury.com> wrote:
>
> > Bella Jones <m...@privacy.net> wrote:
> >
> > > Robert Brace <rlb...@shaw.ca> wrote:
> > >
> > > > If you see a blob while looking through the viewfinder, that
> > > > particular blob certainly isn't on the sensor (or rather the AA
> > > > filter).
> > >
> > > Yep - I feel a bit dumb now. :-) Great, so I have dust on the sensor
> > > *and* the viewfinder. But how did it get on the viewfinder, and how can
> > > I get rid of it I wonder...?
> >
> > <waves>
> > Just hope it isn't inside the prism, or it will be a service job to fix.
> >
> > Hopefully it is on the mirror, the focus screen above the mirror, or on
> > the eyepiece :)
>
> <waves back>
>
> Just had a blow at those bits. No change. Bollocks. But it isn't
> awful, just slightly distracting.
>
Yeah I've had a few in mine for a bit, lens cleaning cloth in the
eyepiece, and removing that hair that sat on the focus screen that had
been nagging me for a while. Much nicer.
> > Having read this lot think I'm going to have to do some test shots this
> > weekend.
>
> I feel a bit of a twat with this thing stuck on the sensor. Until I
> brave sorting it all out, I shall adopt the pose of 'All apertures
> smaller than f/8 are for wimps'. That will be my story, and I shall
> stick to it. :-)
Well some of these mystic blue skies you mentioned appeared today in
Derbyshire, f16. Feck. Think I'm going to have to order one of them
there Giotto's and a starter cleaning kit from Just Black's. Also going
to have to sort out that coupler charger that never came with the camera
:-/
Jon B
> On Sat, 18 Feb 2006 12:20:19 +0000, in rec.photo.digital.slr-systems
> black...@jonbradbury.com (Jon B) wrote:
>
>
> >there Giotto's and a starter cleaning kit from Just Black's. Also going
> >to have to sort out that coupler charger that never came with the camera
> >:-/
>
> If you mean an AC adapter in American speak, just use a fresh charged
> battery if you are worried. This would be another excuse to have a spare if
> you don't all ready have one.
Yes its the AC adapter I'm missing. If the accepted way to shove it into
bulb mode then? iirc my D30 won't go into sensor clean mode unless it is
on the mains. Between the G2 and the D30 I've got 4 batteries so well
covered there :)
Verizon
looks great! Thanks for all the advice.
Now new questions - can you use Pec Pads rather than the very expensive
Sensor Swabs? Also - any tips on keeping the sensor clean??? I was doing a
lot of scenic photography in Hawaii & switching lenses a lot. How do people
prevent problems? Or, is it just a fact of life with digital cameras? I saw
that using zoom lenses made the problem worse. Is that true? I always try to
change my lenses in a way that doesn't leave the inside of the camera
exposed to the air for very long. Do you need to blow out the inside with
air before putting on the new lens?
---------------------------------------------------------------------------
FOR SCENIC, NATURE PHOTOGRAPHS OF HAWAII, WATERFALLS, RAINBOWS & MORE
VISIT MY WEBSITE, SUSAN A. LEVINE PHOTOGRAPHIC ART
http://www.lbdassociates.com/salphotos/
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"Mike Rooney" <M.Ro...@cox.net> wrote in message
news:vs1Jf.32684$Dh.17272@dukeread04...
Alan Bremner
<sale...@lbdassociates.com> wrote:
>Now new questions - can you use Pec Pads rather than the very expensive
>Sensor Swabs?
Those are what I used for my first 'wet clean' last week, wrapped
round a SensorWand from <http://www.micro-tools.com>.
>How do people prevent problems? Or, is it just a fact of life with digital cameras?
Dust ingress has always been an issue with interchangeable-lens
cameras, it's just that the digital sensor makes its presence much
more obvious than it was with film. I personally don't find it a
frequent problem, and just give the body a 30s blast with a Rocket
blower every couple of weeks to keep things tidy. In fact, it wasn't
dust but a speck of 'flock' from the mirror box adhering to the sensor
that required the Eclipse treatment - the darn thing was clearly
visible on images taken at f/4! <g>
>Do you need to blow out the inside with air before putting on the new lens?
I wouldn't say you *need* to but if you had the time it wouldn't hurt.
Me, I do the maintenance at home and worry only about the photography
when in the field. :-)
Al
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