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Old May 1st 18, 12:41 PM posted to rec.photo.digital
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Default Funky IR Artefact

On 2018-05-01 11:06:44 +0000, Whisky-dave said:

On Tuesday, 1 May 2018 11:32:08 UTC+1, android wrote:
On 2018-05-01 10:04:10 +0000, Dense Dave AKA Whisky-dave said:

Yes and you get a red picture or a monochrome image of the seen in IR
light but only provided yuor sensor can record that and not just
visable light.
This was NEVER my aim.


Oki... but that is what IR photography really is. Not red of course
but a monochrome representation of that that the eye can't perceive.


which is pretty boring as I said I did it in the 70s. There is a use
for IR but it's not photographically very pleasing especaily after
you've seen a few dozen white trees. There's always X-ray too but I
think health and safety might get in the way, but then again I'm
waiting for the FLIR camera to get higher resolutions.

My aim was to record as much of teh spectrum as I could with a camera.
if I could have brought a roll of ultraviolet film I would have done that too.
I wanted as much of the spectum as possible, why do people use HDR ?
I wanted to go further.


If want full spectrum then rip out the IR block


You haven't done that with your camera though have you, which was my point.
If/when you do you might find some problems as far as exposure and focusing.


No but no problems if... We're talking MILKs, of course...

and don't replace it with anything. I would go monochrome then since
you can't filter out IR on select photosites and thus will end up
toons of fake colors...


Depending on your sensor and lens.


Dense Dave was the name...


Conversions there you remove all pixel filters

what are pixel filters ?


That Bayer matrix plastic sheet that's in front of the sensor and the
true pixels, or photosites....


are pixels real ?
No they are fake too, our eyes also see an image in seperate colours
our brain then translates what the eye 'sees', and all colours are fake.
But like sound we divide them up into useful chunks to describe them.


Pixels are real, discrete sensor averaging input to a certain area but
that count you see in specs sheets are interpolated pseudo pixels...
--
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