Oct 272013
 
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The PiNoIR Raspberry Pi camera without infra-red filter is about to hit the streets. It looks like the first purchased units have shipped already. Matt “Raspberry Pi Spy” Hawkins has got one he bought from RS. I’m not quite sure what happened there, since the product isn’t officially launched yet. But no doubt others will have them soon enough.

Needless to say, before it even officially hits the streets, people are arguing about what it is, what it isn’t and how the Raspberry Pi Foundation should and shouldn’t be referring to it. (What a pedantic, picky bunch we computer types are!)

In her original announcement about the Pi NoIR camera module, Liz Upton wrote…

“Sunny, who make the sensor, filter and lens package that’s at the heart of our camera board, did not offer a package without the filter at all. Removing it would mean an extra production line would have to be set up just for us – and they had other worries when we started to talk to them about adding an infrared camera option. They told us they were particularly concerned that users would try to use a camera board without a filter for regular daytime photography, and be would be upset at the image quality.

It’s not for regular daylight photography

To show you why, here’s two screen shots from a comparison video I shot yesterday with both original RasPiCam and Pi NoIR simultaneously…

RasPiCam “control”

Pi NoIR shot

I made them small so you can compare them side by side. Click either shot to enlarge to full 1920×1080 size. It was a dull, cloudy day. There’s a larger version below…

 

Pi NoIR vs RasPiCam

Here’s what Pi NoIR IS for

  • camera effects e.g. black and white IR photos
  • low-light photography with IR lighting
  • wildlife photography (nocturnal with IR lighting)
  • specialist archaeological applications
  • specialist botanical applications

And of course, a lot of us will get one to experiment with. I have in mind a project involving either a servo or solenoid and a light sensor to control the position of an IR cut filter for a 24-hour surveillance camera.

I hope this helps you decide whether the PiNoIR is for you or not. I haven’t yet sorted out an IR source, so can’t show anything useful as regards night-time shots.

  17 Responses to “PiNoIR – what’s it for? Comparison of RasPiCam and Pi NoIR output in daylight”

  1. Excellent comparison – I think that I might order one! And what is this illumination stuff? I have to have an IR led as well?

    The Raspberry Pi Guy

    • Several IR leds actually Matt. Most IP cam security cams have the lens unit pretty much surrounded by IR leds, although I haven’t yet researched what wavelength, angle etc.

  2. now if someone makes a model ‘C’ RPI with 2 camera inputs, one for regular and one for noir version.

    • I don’t think the GPU would cope with 2 at once.

      • Actually, the BCM2835 does have two CSI interfaces on it http://elinux.org/RPi_BCM2835_Pinout but only one of them is exposed to the outside world on the RaspberryPi board (the second interface is inaccessible under the BGA). But presumably if you were to connect two cameras at once to some other theoretical BCM2835-based board then you wouldn’t be able to run them both at the maximum resolution/framerate at the same time.

        Alex – just to reinforce the above “what’s it for” article, it might be worth including comparison shots of an IR-illuminated scene taken at night with both cameras too? :-)

        • Alex – just to reinforce the above “what’s it for” article, it might be worth including comparison shots of an IR-illuminated scene taken at night with both cameras too? :-)

          It will be done when the IR source arrives :)

          • IIRC in one of the very early IR-with-PiCam photos (i.e. where they were removing the filter manually with a knife and great care) they were just using a TV remote-control as an IR source? I’m sure you must have one or two of those ;)

          • I don’t remember the photos, but I’m after something with a useful range (5-10m). Should have some fairly “bright” 850nm leds arriving tomorrow.

            John and I did test this camera module with a TV remote pointing straight at it on Friday at RPi HQ. It showed up, but didn’t have a lot of oomph (perhaps because of pulsing?)

          • 850nm LEDs? Make sure you have your magnifying glass handy before opening the envelope ;-D

          • That made me laugh out loud :-)

  3. Idea of a relay and IR fiter’s what I’m going for. Plus a shedload of IR LED’s . Project to be housed in a large dummy outdoor CCTV case (Ideal! Weatherproof, and loadsa battery space!) I’d be interested to sear the results of the filterless camera with an IR filter, if anyone’s done it yet. Would any light ‘bleed’ around the filter affect it, and what would be the spec?
    Can’t find the spec. of the original filter unfortunately.
    Quick squint on ebay suggests about a fiver gets TWO “9.5mm Optical UV-IR CUT filter” – “..”two, in case you break the first trimming it to shape”) and a cheap servo about the same. Suck-it-and-see, I guess

  4. Question, is it possible to put a filter in front of the PiNoIR camera to get the best of both worlds? As in, during the day a glass filter is placed in front of the camera, and then at night the filter is removed and IR is turned on to see better at night?

  5. [...] at RasPiTV shows how his new Pi NoIR stacks up against his RasPicam for daylight photography and draws some [...]

  6. Would be nice to compare results of both cameras at the focus of a telescope on astronomical subjects… I was planning to take the filter off of a spare PiCam but this one is better – no risks!

    I have yet to try the camera that we received recently. Just a quick question – is it possible to take long exposures on these ?

    Thanks
    Shashi

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