Damaged pixels on sensor? I have noticed something that looks like a broad very light gray check mark in white sky in some of my photos, most apparent in long range shots with my...

grizrev

I have noticed something that looks like a broad very light gray check mark in white sky in some of my photos, most apparent in long range shots with my Olympus M5 MarkII using my Olympus 75-300 mm lens. Does this indicate sensor damage, perhaps pixels that have been burned by the sun? If so, can it be repaired?

TriX Loc: Raleigh, NC

Suggest you post a shot showing the issue.

CHG_CANON Loc: the Windy City

TriX wrote:

Suggest you post a shot showing the issue.

Agree.

grizrev - another set of eyes seeing what you're seeing will help to diagnose.

Joe Blow

I suggest shooting three shots of a blank wall. Preferably, very light or even white, as long as it is uniform in color. Take the shots at minimum, medium, and maximum apertures. Try another lens and repeat.

If there is a sensor issue it will show up in all your shots. That includes dead pixels or just dust.

If it is the lens it will show up on all those shots from that one lens.

If it is a processor issue or random then it might show up on only one shot.

This may not fix your camera, but it will narrow down what the problem is.

amfoto1 Loc: San Jose, Calif. USA

grizrev wrote:

I have noticed something that looks like a broad very light gray check mark in white sky in some of my photos, most apparent in long range shots with my Olympus M5 MarkII using my Olympus 75-300 mm lens. Does this indicate sensor damage, perhaps pixels that have been burned by the sun? If so, can it be repaired?

It is most likely a dirty sensor and all that's needed is a simple cleaning.

But without seeing a sample image, it's a little hard to say.

dsmeltz Loc: Philadelphia

amfoto1 wrote:

It is most likely a dirty sensor and all that's needed is a simple cleaning.

But without seeing a sample image, it's a little hard to say.

Cdouthitt Loc: Traverse City, MI

if it is an issue with a stuck pixel, you can try pixel mapping in the menu to clear it up...if that doesn't work, it may need servicing.

mas24 Loc: Southern CA

Get a rocket blower for your sensor, and check the results. That sometimes cures the problem. If you don't own one, you will need it. Sooner or later.

rehess Loc: South Bend, Indiana, USA

Does this camera have a way of cleaning itself??

Cdouthitt Loc: Traverse City, MI

rehess wrote:

Does this camera have a way of cleaning itself??

Yes...the OP can try cycling the on on/off a few times, holding the face of the camera towards the ground...my guess though is that it is a stuck pixel and that running a pixel map in the utility menu will fix it. Word of caution though, you don't want to run pixel mapping more than a couple of times...or so I've heard.

rehess Loc: South Bend, Indiana, USA

grizrev wrote:

I have noticed something that looks like a broad very light gray check mark in white sky in some of my photos, most apparent in long range shots with my Olympus M5 MarkII using my Olympus 75-300 mm lens. Does this indicate sensor damage, perhaps pixels that have been burned by the sun? If so, can it be repaired?

If you're going to get any focused help here, you really do need to post a picture - with "(store original)" checked - showing this issue.

James R. Kyle Loc: Saint Louis, Missouri (A Suburb of Ferguson)

rehess wrote:

If you're going to get any focused help here, you really do need to post a picture - with "(store original)" checked - showing this issue.

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Yes...

PLEASE post a Photo (Image) of the problem.

The member here do wish to help you.

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grizrev

I greatly appreciate all of your kind responses and offers of help. I am traveling on the road at present, but when I get home I will post a photo that shows the problem!

James R. Kyle Loc: Saint Louis, Missouri (A Suburb of Ferguson)

grizrev wrote:

I greatly appreciate all of your kind responses and offers of help. I am traveling on the road at present, but when I get home I will post a photo that shows the problem!

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We now wait.

Thank you :-)

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grizrev

James R wrote:

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We now wait.

Thank you :-)

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Well, I am finally off the road! Dug my camera out to take a shot of my problem and go to work with you on some of your suggestions. The first thing I did was to blow the sensor with my rocket, put on my 15-300mm lens, take a shot of a white wall at 300mm, and take a look at the display. NO GRAY CHECKMARK!! Took a few more to be sure. Same result. Thank you all for your time spent on what should have been an obvious solution! Guess it must have been a tiny bit of lint or dust on the sensor. Sometimes the most simple solution is the right one!