from what I recall regarding filters - Green Lantern 18:48:34 04/21/21 (1)
 RE: from what I recall regarding filters - pictureguy 19:46:13 04/21/21 (0)
 RE: Photo Experiment - AbeCollins 16:31:29 04/20/21 (1)

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 from what I recall regarding filters - Green Lantern 18:48:34 04/21/21 (1)
 RE: from what I recall regarding filters - pictureguy 19:46:13 04/21/21 (0)
 RE: Photo Experiment - AbeCollins 16:31:29 04/20/21 (1)
 RE: Photo Experiment - pictureguy 16:46:48 04/20/21 (0)

• Focus Bracketing and Stacking

HDR is trying to extend the native dynamic range of a sensor and presenting it in ONE shot....

Some HDR shots 'look funny'....but that might just be me?

Camera sensors are all RGB, at tleast consumer stuff and even PRO DSLR / Mirrorless.

So what I'd like ot do is take 3 shots....an R, a G and a B and stac 'em.......Just for an experiment.

Too much is never enough

You could stack (thread together) all three primary colors (R,G,B) and achieve white light. It's pretty cool too. Of course you'd have to adjust the exposure a LOT due to the density the light would have to pass through.

You got me on photoshop, although we used it exclusively in the Navy back in the late 90s and on, I personally never wandered off into the experimentation phases of it.

In fact for certain work we were forbidden to use it. For example in forensic, criminal and autopsy photos we weren't allowed due to the lack of chain of custody and none of the Jag officers wanted to challenge them in court and risk having them tossed out since the technology was just so damn new (the standing joke was if NCIS needed a 'smoking gun' at the scene of the crime all they had to do was ask lol...) Now there WAS software available that addressed this back in those days but the cost was in the high 5 figures and only the FBI and a few countie's police departments scattered across the country had 'em.

BUT for regular PR stuff (award ceremonies, command sit down portraits, etc.), the sky was the limit!

Manufacture is NOT trivial. Thickness of glass must be VERY uniform....to within microns, I suspect, and Parallel.

In semiconductor manufacture, tolerances get even worse. Especially when you must have linewidths in the nanometer range and than put on anywhere up to 11 layers in PERFECT (essentially) registration...

Trouble for me in examining photos for 'tampering' is getting at the ORIGINAL full file. Edges can show signs of sharpening or fringing IF tampered with. Any registration shifts can be seen, too.

My very FIRST photoshop experiment? I set my camera up on a tripod in the side yard. I used the self timer and stood on one side of the frame. I than set up the flash on a 2nd tripod and had the wife stand on the OTHER side.
I cut me out of one shot and moved me over to the 2nd. Perfect registration, since NOTHING had moved.
NOBODY could spot the fake. Even though? Wife had a shadow from the flash and I DIDN'T. I did several tests with different amounts of 'feathering' to get the good result.....But I suspect it could have been found out with better inspection.

Good Times......

And now that I think about it? I think a normal RGB sensor has MORE green cells than red OR blue.
I'd bracket and use the Histogram function in the finder. Than try to find the best combination of the 3 channels to yield good color.
AND? As an aside? I think that's one way to get a COLOR shot from a B&W sensor, like on MARS or someplace. Again, 3 identical shots with one eachc of R, G and B........

SEE LINK for sensor RGB array......and some additional information.
Too much is never enough

• https://www.cambridgeincolour.com/tutorials/camera-sensors.h