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Honored Contributor
Posts: 5,558
Registered: ‎06-25-2014

Re: Spot / Shadow when using live view on videos and photos


@mchance wrote:

Bought it new from Best Buy yesterday.  The first time I noticed it was in the upper part of the photo and was longer (up and down)   It is now where you see it in the two photos I posted

thanks

Mike Chance


If it's moving around, it could be a dust ball or something; but in any case it's got to go. Whatever it is, it was presumably there when you bought the camera, so Best Buy should cheerfully exchange it for you. (I have to say, though, that my experience with our local Best Buy inspires little confidence in the likelihood of that outcome.)

Bob
Philadelphia, Pennsylvania USA
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Occasional Contributor
Posts: 9
Registered: ‎05-04-2015

Re: Spot / Shadow when using live view on videos and photos

I had posted this earlier, but I am not sure if you saw it.   

 

‎05-04-2015 04:41 PM - edited ‎05-04-2015 04:42 PM

I think I was able to remove the spot.   The Camera Manual had choice of " Clean Now" under Sensor Cleaning.   Even though the sensor is cleaned each time you turn the camera on and off, this step seems to do a longer cleaning process.  I hope this solves the problem long term.  I have two weeks to return camera to Best Buy.

 

thanks for your help

Mike Chance

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Esteemed Contributor
Posts: 3,849
Registered: ‎06-11-2013

Re: Spot / Shadow when using live view on videos and photos

There are two filters inside the camera and directly in front of the sensor. One is a UV/IR filter, the other is a "low pass" filter (it reduces the problem of moiré in an image). Anyway, the camera uses the piezoelectric effect to vibrate the front filter in the hope that this will "shake" any dust particles loose. This will not always works and sometimes more aggressive cleaning is needed.

A hand-squeezed air blower (e.g. a Giottos "Rocket" blower) might be able to blow off dust that the vibration can't clear. Exceptionally soft-bristled paint brushes are sometimes used (pristinely clean, of course) and there are even versions of these with a grounding wire so they can discharge any static cling that might be responsible for dust sticking to a sensor.

There are other tools... gummy "Gel" sticks is one I've seen recently. If the simple vibration and puffs of air don't clear dust, then I usually resort to wet-cleaning using "Eclipse" cleaning solution (a few drops) on a "Sensor Swab". Eclipse is nearly pure methanol so it evaporates rapidly and leaves no residue behind.

From time to time, dust will manage to get onto a sensor and, from time to time, the self-clean wont be enough to clear it. So it's an inevitability of DSLR photography that the sensor will, just occosionally, require a manual cleaning.
Tim Campbell
5D III, 5D IV, 60Da
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Occasional Contributor
Posts: 9
Registered: ‎05-04-2015

Re: Spot / Shadow when using live view on videos and photos

thanks

Mike Chance

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