I wonder what causes this (Page 2): The nature of the artifacts indicates that it's related to the processing of the data and isn't optical. I would say it's probably a glitch in your...

R.G. Loc: Scotland

The nature of the artifacts indicates that it's related to the processing of the data and isn't optical. I would say it's probably a glitch in your camera's software/processor.

It's possible that old data on the SD card isn't being properly overwritten, but it's odd that it's only the jpegs and not the raw files that are affected. Are you recording raw to one SD card and jpeg to another?

Longshadow Loc: Audubon, PA, United States

Not in the RAW but in the JPEG - I would suspect a burp in the JPEG creation (conversion) by the camera.
Random pixels look scattered (affected).
By any chance do any other images exhibit the anomaly? (Not necessarily in the same place.)

Bill_de Loc: US

These are the 2 dark dots half way between the box and the lightening.

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gekko11 Loc: Las Cruces NM

R.G. wrote:

The nature of the artifacts indicates that it's related to the processing of the data and isn't optical. I would say it's probably a glitch in your camera's software/processor.

It's possible that old data on the SD card isn't being properly overwritten, but it's odd that it's only the jpegs and not the raw files that are affected. Are you recording raw to one SD card and jpeg to another?

I've gone back to check and this seems to only happen when the camera is set to 'raw+jpeg' on one card

gekko11 Loc: Las Cruces NM

Longshadow wrote:

Not in the RAW but in the JPEG - I would suspect a burp in the JPEG creation (conversion) by the camera.
Random pixels look scattered (affected).
By any chance do any other images exhibit the anomaly? (Not necessarily in the same place.)

Yes other images are affected , it is a fairly rare occurrence , I agree it must be in the conversion process

randave2001 Loc: Richmond

Pistnbroke wrote:

reformat the card in your computer and do a full format not quick.

Years ago when I had issues with a CF card I was told by Sandisk to NEVER format media in the computer but always in the camera. Never have had an issue with media since then. Not sure this is sound advice.

Blair Shaw Jr Loc: Dunnellon,Florida

gekko11 wrote:

every once in a while this "noise" shows up in a frame or two. I use a canon 5dmk 4 and a mk3 as well. i used to think it was an artifact from the sd card but it seems to occur regardless of which card i use... it only seems to occur when shot in jpeg not raw. just wondering if anyone else has had this problem

Did you remember to cover the eyepiece before you took the exposure......? That's what I suspect at first glance and nothing more. Let us know what you discover. Hope this was helpful.

jerryc41 Loc: Catskill Mts of NY

And that shows up in various shooting situations with both cameras and different cards? The square is centered vertically but not horizontally. The artifacts have straight lines. "Is a puzzlement." (The King and I)

The cameras are doing something wrong when processing the JPEGs. Are both cameras using the latest firmware?

mborn Loc: Massachusetts

Many interesting answers. We may never know the reason

StanMac Loc: Tennessee

If the anomaly occurs on different cards, then it’s obviously the camera. Send an affected file to Canon support to get their take on what the problem may be.

Stan

CatMarley Loc: North Carolina

gekko11 wrote:

Hhmm, you might be on to it, I went back to Photos to check and found that this particular shot was Raw + Jpeg... the raw file does not have the artifact, the jpeg does.

There is your answer. It is either a problem with the card to which the JPG file is being written, or the actual compiling of the file and writing to the card by the camers processor. And you can find out which by using a different card.

gekko11 Loc: Las Cruces NM

I have received many good potential ideas and possible explanations, I thank fellow Hoggers for that. I think Ill send this to canon for some kind of explanation ,,, some looking back on photos from a few years back, it occurs with both cameras, with different cards,, always cover the eyepiece (as a course of procedure, not documented) so it seems it must be with camera (or me, my brother says every time I get close to something electronic something goes inexplicably haywire!)

larryepage Loc: North Texas area

gekko11 wrote:

every once in a while this "noise" shows up in a frame or two. I use a canon 5dmk 4 and a mk3 as well. i used to think it was an artifact from the sd card but it seems to occur regardless of which card i use... it only seems to occur when shot in jpeg not raw. just wondering if anyone else has had this problem

Tell us a little about the other times this has occurred. Were they also when you were taking lightning photographs, or did they happen with other subject matter? Are the patterns always in the same place in the image? Do the components look the same? Do they always occur with low key images? (And it may be that they do, but that you can only see them plainly in darker images.) If they occur in other types of images, could you share one or two of them?

My thinking here is that this could be the result of a processing problem caused by the very strong electrical field that lightning strikes produce, or perhaps even by your lightning sensor/trigger. Just searching for some evidence one way or the other.

gekko11 Loc: Las Cruces NM

larryepage wrote:

Tell us a little about the other times this has oc... (show quote)

Larry , darn good questions, lets see ,,, not always lightning shots, different subjects, the components do look very similar each time,,, will find some more examples and post them.

lamiaceae Loc: San Luis Obispo County, CA

gekko11 wrote:

every once in a while this "noise" shows up in a frame or two. I use a canon 5dmk 4 and a mk3 as well. i used to think it was an artifact from the sd card but it seems to occur regardless of which card i use... it only seems to occur when shot in jpeg not raw. just wondering if anyone else has had this problem

As others have said, that is an outstanding capture! In this image removing the noise is easy using a Clone or Healing Tool. But that is not your question. I have no idea what is causing those noise remnants. It seems very strange.