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Spot on Image
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Oct 22, 2018 10:07:01   #
JCullman
 
I continually have a spot on the lower left of my images. Not all of them, but many of them at the exact same spot with the exact same characteristics. It is independent of lense or focal length.


I have uploaded an image in hopes someone recognizes the source. Thanks in advance for your troubleshooting.

Jeff..........



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Oct 22, 2018 10:11:22   #
dsmeltz Loc: Philadelphia
 
JCullman wrote:
I continually have a spot on the lower left of my images. Not all of them, but many of them at the exact same spot with the exact same characteristics. It is independent of lense or focal length.


I have uploaded an image in hopes someone recognizes the source. Thanks in advance for your troubleshooting.

Jeff..........


Dirty sensor? Have you tried cleaning it?

Wait. It's a white spot. Is the same lens involved for each image?

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Oct 22, 2018 10:16:35   #
JCullman
 
Appears on different lenses.

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Oct 22, 2018 10:20:29   #
dsmeltz Loc: Philadelphia
 
JCullman wrote:
Appears on different lenses.


OK. Still might be something on the sensor, maybe something oily. Dust would block light resulting in a dark spot. Oil might diffract light causing a hot spot.You probably need to clean the sensor.

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Oct 22, 2018 10:21:03   #
Silverman Loc: Michigan
 
dsmeltz wrote:
Dirty sensor? Have you tried cleaning it?

Wait. It's a white spot. Is the same lens involved for each image?


I Look forward to hearing the replies to your "Spot-Issue" and what the exact determination is causing this issue. If dirty sensor, what is safest and Best way to clean the sensor?

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Oct 22, 2018 10:23:40   #
RichardSM Loc: Back in Texas
 
JCullman wrote:
I continually have a spot on the lower left of my images. Not all of them, but many of them at the exact same spot with the exact same characteristics. It is independent of lense or focal length.


I have uploaded an image in hopes someone recognizes the source. Thanks in advance for your troubleshooting.

Jeff..........


You have dirt or something on the surface of sensor, it’s do for a cleaning. you can purchase a kit to do your self or have it done for you, some camera shops will remove all dirt and particles from the sensor for a fee! I myself clean my own camera sensor I use a German gel pad to removed such items, it cost me around $50.00 for the device it lasts a long time.

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Oct 22, 2018 10:24:29   #
dsmeltz Loc: Philadelphia
 
Silverman wrote:
I Look forward to hearing the replies to your "Spot-Issue" and what the exact determination is causing this issue. If dirty sensor, what is safest and Best way to clean the sensor?


1) Pay a camera store to do it. 2) Buy a sensor cleaning kit and DIY.

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Oct 22, 2018 10:35:57   #
PHRubin Loc: Nashville TN USA
 
If it were on ALL photos, it could be a bad pixel in the sensor. Otherwise, dirt.

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Oct 22, 2018 10:37:28   #
Jim Bianco
 
I clean my own sensor, just use caution, sensor is very thin, to much pressure and it could damage it. Check out u tube on this procedure or you could send it out to be cleaned. Hope this helps. Jim Bianco

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Oct 22, 2018 10:39:05   #
Bunko.T Loc: Western Australia.
 
JCullman wrote:
I continually have a spot on the lower left of my images. Not all of them, but many of them at the exact same spot with the exact same characteristics. It is independent of lense or focal length.


I have uploaded an image in hopes someone recognizes the source. Thanks in advance for your troubleshooting.

Jeff..........


I had three spots on my pics a while back, usually in the sky & easy to edit out. But it cheesed me off so took it in for a service, just needed a clean up inside. Good now.

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Oct 22, 2018 10:47:18   #
jerryc41 Loc: Catskill Mts of NY
 
Dirt on the sensor?

http://www.howtogeek.com/162413/how-to-cheaply-and-safely-clean-your-cameras-dslr-sensor/
http://content.photojojo.com/tutorials/digital-slr-sensor-cleaning/

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Oct 22, 2018 10:57:22   #
SonyA580 Loc: FL in the winter & MN in the summer
 
PHRubin wrote:
If it were on ALL photos, it could be a bad pixel in the sensor. Otherwise, dirt.


Check your camera's manual to see if there is a setting that displays any dead pixels.

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Oct 22, 2018 11:11:38   #
CHG_CANON Loc: the Windy City
 
Since you failed to store the image, we're left to guess from your description whether you mean dead or 'fixed' pixels or sensor dust if they exist in this example. Both are possibilities in a hot & humid environments for a shot that includes sky. You might create a reply and remember to store the original of this example and we can provide an analysis rather than a guess. Where spots are circular shadows in the same place that tend to occur in the sky at apertures f/8 or smaller, try cleaning the sensor, professionally or DIY. For what looks like a white or red 'x' or as a tiny square, that's a fixed or dead pixel. Try your camera's self-cleaning process or simply turning off the camera and letting it cool in an A/C cooled environment, particularly if doing long exposures in a high-temperature environment.

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Oct 22, 2018 11:35:26   #
amfoto1 Loc: San Jose, Calif. USA
 
I agree. Next time, it would help a lot if you "store the original" image in your post with EXIF intact here so we can view it enlarged and see the shot details, camera model, etc.

But from what I can see (white spot near the bottom edge and left of center)... most likely it's on the sensor. A proper cleaning should solve it. Even with self-cleaning sensors, oil and dust occasionally end up requiring a cleaning. The reason you don't see it in some images is because it will be more obvious when using smaller apertures, more blurred and less noticeable with larger lens apertures. It also probably "hides" in image detail in some cases.

It's definitely not the lens, since it's occurring with different lenses (plus, to be that apparent in images anything in or on the lens would have to be very large and quite obvious to the naked eye).

I've never seen a dead pixel that looks like that. However, depending upon post processing, maybe sharpening or noise reduction or other treatments to the image are changing the appearance of a dead pixel.

Dead pixels are not uncommon. With literally millions of individual pixel sites on a sensor, is it any surprise that one or two might fail? Most cameras have some procedure for "mapping around" dead pixels, to solve the problem. Since we don't know what camera is being used, we can't really say if that's possible with yours.

The best info about sensor cleaning can be found at: www.cleaningdigitalcameras.com

That website is maintained by professional camera repair techs... one of whom (Larry) literally "wrote the book" (actually many of them) on camera repair. The other tech (Curt) owns www.micro-tools.com, which is a major supplier of tools and supplies to the camera repair industry. They have done thousands of cleaning themselves, stock and sell all types of sensor cleaning devices, and give unbiased feedback and advice about all the different methods.

If a camera's sensor has never been cleaned, it almost always will need a "wet cleaning", because it will usually have oil on it (from the shutter or other mechanisms). Any "dry" cleaning method will only smear the oil, contaminate the cleaning device and make matters worse. If at all uncertain about doing safe cleaning yourself or unwilling to invest in the approx. $100 to $150 worth of supplies and tools needed to do so properly, you can probably find someone locally who offers sensor cleaning service at a reasonable cost. Might even do it while you wait (just make sure your camera's battery is fully charged, in either case).

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Oct 22, 2018 12:42:33   #
larryepage Loc: North Texas area
 
The spot is "borrowing" light from a larger area so produce a small white spot. This is sort of what a tiny lens would do. So I'd look for some sort of dried or solidified liquid on the top right portion of your sensor. If that's in fact what is causing the problem, more than a basic cleaning may be required to remove it without damaging the sensor.

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