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Occasional Contributor
Posts: 6
Registered: ‎04-22-2018

Mark III - blue pixels in images

There are a few images in this shoot, this specific pose, with these blue pixelized patches (under her chin). They are brighter in Photo Mechanic at this moment. Haven't opened the images in LR or PS yet. What is causing this?

 

Capture.JPG

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Occasional Contributor
Posts: 6
Registered: ‎04-22-2018

Re: Mark III - blue pixels in images

Another example.

 

 

Capture2.JPG

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Honored Contributor
Posts: 5,316
Registered: ‎06-25-2014

Re: Mark III - blue pixels in images

Those look like shadow warnings. Are those the actual images or just what they look like in the editor?

Bob
Philadelphia, Pennsylvania USA
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VIP
Posts: 12,292
Registered: ‎12-07-2012

Re: Mark III - blue pixels in images

I agree with Robert.  Load them in to LR and/or PS.  I doubt they will be there.

You can turn them off in your camera.

EOS 1DX and 1D Mk IV and several lenses!
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VIP
Posts: 12,292
Registered: ‎12-07-2012

Re: Mark III - blue pixels in images

You must consider some basic photography 'rules'.  Make sure you expose for the face. Spot meter for example. Those features are paramount. When the latitude of the camera sensor is exceeded you may lose some detail but make sure it isn't in the face.

EOS 1DX and 1D Mk IV and several lenses!
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Occasional Contributor
Posts: 6
Registered: ‎04-22-2018

Re: Mark III - blue pixels in images

These images are in Photo Mechanic, not edited yet. Yes, they are a little underexposed, but I've never seen this issue before. And I don't think I've changed any settings for them to start showing the shadows. I'll have to run them through Lightroom to see what happens then.
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Esteemed Contributor
Posts: 3,831
Registered: ‎06-11-2013

Re: Mark III - blue pixels in images

Bob is probably right... many photo editing applications have the ability to highlight over-exposure or under-exposure areas.

 

My guess is your software is showing you areas where the data is 'clipped' on the low end (pixel values drop to zeros).

 

Tim Campbell
5D III, 5D IV, 60Da
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Occasional Contributor
Posts: 6
Registered: ‎04-22-2018

Re: Mark III - blue pixels in images

That makes sense but this has never happened before until now. Maybe a setting changed without me realizing it. I'll have to check in Photo Mechanic.
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Occasional Contributor
Posts: 6
Registered: ‎04-22-2018

Re: Mark III - blue pixels in images

Welll...I feel dumb. I have no idea how the option got turned on, but yes, it was checked to "Show lost shadow detail." Not a Canon issue at all. 

 

Moving along. Nothing to see here. *smh*

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