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Old Apr 13, 2014, 5:53 PM   #1
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Default Help with Very faint spot on EPL-5 sensor

Help with Very faint spot on EPL-5 Sensor
Marcelos eagle eye spotted on a few month ago on 1 of my images
I am guessing its on the sensor. Almost a perfect circle. I cannot see anything on the sensor
Same with 2 lenses
shows up with a blue sky background . It cannot be seen on a dark background or a white Background
It is visible with my VF-2 but not the LCD
So far I have tried pixel mapping and a sensor cleaner without any luck
Sand paper did not work either ( kidding )

NOT a big issue as I can Photoshop it out in less than a minute
Thank you very much for any help

fist picture is OOC jpg ( full size )
2nd is cropped

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Old Apr 13, 2014, 6:44 PM   #2
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What aperture was used in those images? The smaller the aperture, the worse it should be, but if it looks like that and you're shooting wider open (f2.8 or larger) it probably should be taken care of, and I would send it to Olympus.

Arlington Camera does sensor cleaning.....they clean various sensors all the time, but they will not touch an Olympus sensor. If they won't touch it, I have no business doing it.

Last edited by Greg Chappell; Apr 13, 2014 at 6:49 PM.
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Old Apr 13, 2014, 7:18 PM   #3
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Quote:
Originally Posted by Greg Chappell View Post
What aperture was used in those images? The smaller the aperture, the worse it should be, but if it looks like that and you're shooting wider open (f2.8 or larger) it probably should be taken care of, and I would send it to Olympus.

Arlington Camera does sensor cleaning.....they clean various sensors all the time, but they will not touch an Olympus sensor. If they won't touch it, I have no business doing it.
Thank you for the reply Greg
shot at f 11.0 using the 12-50 lens
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Old Apr 13, 2014, 7:56 PM   #4
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Hi Fred: it may not be the same, but a couple of months ago, I started having the exact same problem spot showing up on blue sky shots. The spot showing looked exactly like what you posted. I double checked the sensor, and could see nothing on the sensor. I finally figured it out when I realized that it was the lens, not the sensor. There was a small, faint spot that looked like a dried water spot on the outer element of my 50-200mm lens. It looked too faint and small to cause the problem, but it was. Cleaned the lens carefully, and the problem vanished! And your spot is identical to what was appearing in the blue sky portion of my shots. I hope that is the same problem with your shots, as you can fix it for free.

Good luck!
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Old Apr 13, 2014, 8:19 PM   #5
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FYI: I dug up an uncropped photo OOC and have circled the spot that I was getting from the unclean lens.
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Old Apr 13, 2014, 8:23 PM   #6
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Ok, f11 will maximize the spot. I rarely shoot stopped down further than f8 and the times I go smaller than f5.6 with the 12-40, it's an error on my part. F4-5.6 are usually small enough for this format and will "hide" a spot like that better by defocusing it.

Last edited by Greg Chappell; Apr 13, 2014 at 9:54 PM.
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Old Apr 14, 2014, 7:42 AM   #7
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Fred, I too had a similar happening as yours and Steven's examples.

here is mine..........


That day, it was in every 'sky view' (I only used the 9-18 lens that day), it turned out to be something on the 9-18 lens that I could not see but disappeared after a cleaning of the lens front( same as Steven said).

I've never seen a smudge since and never saw it from any other lens in my case.

Hopefully yours will clear with a cleaning too.
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Old Apr 14, 2014, 1:51 PM   #8
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Default Bad news Good News

Thank you for all the help
Greg, Steven and Bob

First the Bad news
Its a spot on my sensor.
I tried my 14-42 with the same results
Wow does it ever look identical as Steven Picture

Now the Good News
If you pixel peep and look hard it is Barely visible at f 8.0 in a blue sky
It is gone at f 7.1

Now that I know, I can live with that
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Old Apr 14, 2014, 2:00 PM   #9
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I wouldn't be shocked at all if I did "the test" with my E-M1 and a lens stopped down to f11/16 and saw one or two nasty surprises myself. The less I know, the better.
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Old Apr 14, 2014, 5:31 PM   #10
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Nothing to be worried Fred, I was shooting the other night under extreme wind at the river and a small spot showed in all my pictures, I tried to clean it with a air blower with no results so I just did a went clean and problem fixed.

I use the swabs sensor cleaner, it is very easy to use, don't afraid to damage the sensor.

Check in the web for videos how to do it.

Good look.

Marcelo
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