topic Re: Spot / Shadow when using live view on videos and photos in EOS DSLR & Mirrorless Cameras

Spot / Shadow when using live view on videos and photos

mchance — Mon, 04 May 2015 16:34:46 GMT

Just purchased a 70D. When viewing and transferring video and photos in live view I get a spot / shadow on the images. This doesn't happen when shooting still photos through the viewfinder. At first the spot / shadow was in the middle of the image, it has now moved to the lower portion of the image

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

mchance — Mon, 04 May 2015 17:27:02 GMT

Update the spot is on the photo image when taking through the view finder

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

RobertTheFat — Mon, 04 May 2015 17:15:39 GMT

Probably a flare spot. Use a lens hood, and try to keep light from entering the lens from directions other than a straight line between the camera and the subject.

Have you tried a different lens? Some lenses are more prone to flare than others.

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

mchance — Mon, 04 May 2015 17:26:32 GMT

I don't think this is flare. It occurs inside and outside of my house. Night time too. With and without flash. Right now it always appears in the same place on the videos and photos . It might be some type of lint or debris onthe front or back of lens. I will trying cleaning it and see if that makes a difference. I just bought the camera yesterday and the 18-135 lens is the only one I have. The spot occurs in shots using live view and view finder

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

TCampbell — Mon, 04 May 2015 18:14:59 GMT

We'd need to see a reference image to identify what might cause this "spot".

Lots of things can cause spots... dust on the sensor, flare, damaged shutter mechanism, strange reflections from the inside of the camera (usually because something isn't in it's proper place), etc. But without seeing the thing you are describing as a spot, it's all just a wild guess.

Can you post an image? You can either post here, or if you've posted elsewhere online then you could provide a link.

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

mchance — Mon, 04 May 2015 18:45:27 GMT

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

mchance — Mon, 04 May 2015 18:46:41 GMT

I just posted two photos with spot. They appear in the same place in each shot.

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

RobertTheFat — Mon, 04 May 2015 19:41:02 GMT

@mchance wrote:
I just posted two photos with spot. They appear in the same place in each shot.

That looks like an oil spot on the sensor. Did you buy the camera new or used?

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

mchance — Mon, 04 May 2015 20:10:14 GMT

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

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

mchance — Mon, 04 May 2015 21:42:40 GMT

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

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

RobertTheFat — Tue, 05 May 2015 12:43:06 GMT

@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.)

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

mchance — Tue, 05 May 2015 14:57:25 GMT

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

thanks for your help

Mike Chance

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

TCampbell — Tue, 05 May 2015 15:30:07 GMT

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.

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

mchance — Tue, 05 May 2015 15:36:31 GMT

thanks

Mike Chance