IR / Mono anomaly

Could anyone please shed some light on what's going on here?




In Elements 11, when processing IR images, on converting to mono, these concentric rings appear, top-left of frame.
They seem to be present in most images but their presence seems to be dependant on the tone of the top-left quadrant.
I've processed this to be the worst / show the most.

Any advice would be most welcome.

Roger.

Is it because the image has been converted to just 256 levels of grey? Elements has several methods of converting to mono, try a different one avoiding the 8 bit conversion.
Or if not that perhaps you've picked up a sonic signal from an alien spacecraft.

Maybe there is a fingerprint on the negative?

It looks like Newton's rings. However, it could be a diffraction effect from the sensor combined with the sun being just out of shot? Try using the AA filter simulator in similar circumstances. Alternatively, it could be from over adjusting levels. This usually results in posterisation effects.

It does look as though the IR has been over-done as the whites are totally blown out.

Thanks all for the above.

Could be, Jak. I've tried other routes in Elements but it's still there, to a greater or lesser degree.

Newton's Rings as in slide glasses, John? Would that not have to be on the final image plane, the sensor? It's not on the jpeg before processing....
Sun was over to the right /behind me.
Sorry, don't understand about the AA filter simulator.....?
Over-adjustment of levels is a possibility.

The IR has, indeed, been overdone in the image here. As I said in my post it was "processed to be the worst / show the most" for clarity, ignoring other aspects of pp of the image overall.

Aliens & fingerprints notwithstanding, I have a plan:

Soon as it's sunny, take a shot or two in RAW+. so I have two frames exactly the same (as it were), process them, one as a Raw, one as the jpeg, see what happens, any differences.

Will keep you posted!

Thanks again for the interest shown,

Roger.

What did the original image look like? I'm happy to have a go with it even at 1000pix resolution.

Thanks, Jak, here you go!







I've taken a couple this p.m. with RAW+.........


exRAW:




exJPEG:




exJPEG




exJPEG:




Thinking back, I think I over-cooked those others with the ring patterns by, after going with"convert to b&w"
I ticked "auto levels", then went onto "adjust lighting/levels."
Which was just too much processing, hence the rings.

Thanks for all your interest & help,

Roger.

Leave it with me. I managed to recreate your sonic circles with the first one!

I've tried several ways.
a) This a conversion first to black and white and then adjust brightness/contrast.



b) Similar to that but made an auto correction for levels and contrast first. Any darker and the circles start to be obvious.



c) Taking the original and using Adjust Color>Remove Color produces the obvious sonic circles so that wouldn't seem to be the way to go.



d) A conversion in Irfanview first converting to B&W and then adjusting coontrast to match yours (more or less.)


The circles have to be on the original so its strange they don't really show up in the OOC image. Then the differences observed just by changing the workflow.
Irfanview seems to have handled it better.

Do all those others suffer this too?

One final one comprising the sky of my Irfanview conversion with your original edit for the landscape..



Looking at your raw photos from today they seem fine and much better than the associated jpegs! Problem solved?

The rings start to show when the blue channel is removed. I had a quick try via my usual IR route of Channel Mixer and there just doesn't seem to be enough exposure or IR light in your original. Not every image will make a good IR conversion.