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09/08/2021 12:38:16 PM · #1 |
Hi!
I need to take some photos tomorrow night. It looks like the moon is a waxing crescent, so that's not going to give me any light. I can't use red light or any light, actually.
So I assume that I need to do IR?
What's a cheap way of doing it? It looks like I can by a cell phone adapter and app for $200.
I could also just pick up a cheap trail cam, but then I can't really compose anything, I'd just end up planting it and letting it do it's thing.
Any suggestions/help would be greatly appreciated!!
Thanks! |
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09/08/2021 01:26:08 PM · #2 |
Photography without ANY light is impossible. Even with an IR sensitive camera you will needs some kind of IR light on the scene. During daytime that is the sun, during nighttime you could use an artificial IR transmitter/light. Depending on the type, some IR transmitters actually also emit some red light in addition to the infrared.
IR photographhy is not like the green images you see in action movies with night view equipment. As far as I know, that is real infrared (heat) with strong electronic boosting of the image. The photographic-IR is often called near-IR and is not a heat image but just a reflection of IR light falling on the subject. (I have to correct myself here after googling on the subject: it is not heat, it is still visible light, just amplified very strongly. However, thermal imaging goggles also exist)
Don't think a cell phone will do the job. Normally for IR photography you will need to remove an existing filter from the camera first to make it sensitive to IR. That filter normally filters out the IR because it affects the colors in the regular pictures. For IR images it needs to be removed. If you just add an adapter and do nothing else, you camera is still not IR sensitive.
I use a SONY DSC-F707 for infrared photography. It has a switch that removes the filter and makes it sensitive to IR. It also has two IR emitters in the front of the lens. For daytime IR photography I put tape on the IR transmitters and I add two filters to the lens to 1) filter out the visible light and only let pass the IR light and 2) to reduce the sensitivity by 3 stops (factor 8). Normally the camera and the switched setting is intended for nighttime IR photography in which the 2 emitters light the scene. You can take pictures in total darkness provided the scene is lit by the two transmitters.
I also use a raspberry PI computer with IR sensitive camera's for watching wildlife in my garden. Those camera's also have the filter removed that is normally present in daytime cameras.
So, how big is your scene? What do you need to photograph? Tell use some more about the circumstances. No light available at all?
Message edited by author 2021-09-08 13:39:31. |
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09/08/2021 01:30:09 PM · #3 |
Originally posted by willem:
Photography without ANY light is impossible. Even with an IR sensitive camera you will needs some kind of IR light on the scene. During daytime that is the sun, during nighttime you could use an artificial IR transmitter/light. Depending on the type, some IR transmitters actually also emit some red light in addition to the infrared.
IR photographhy is not like the green images you see in action movies with night view equipment. As far as I know, that is real infrared (heat) with strong electronic boosting of the image. The photographic-IR is often called near-IR and is not a heat image but just a reflection of IR light falling on the subject.
Don't think a cell phone will do the job. Normally for IR photography you will need to remove an existing filter from the camera first to make it sensitive to IR. That filter normally filters out the IR because it affects the colors in the regular pictures. For IR images it needs to be removed. If you just add an adapter and do nothing else, you camera is still not IR sensitive.
I use a SONY DSC-F707 for infrared photography. It has a switch that removes the filter and makes it sensitive to IR. It also has two IR emitters in the front of the lens. For daytime IR photography I put tape on the IR transmitters and I add two filters to the lens to 1) filter out the visible light and only let pass the IR light and 2) to reduce the sensitivity by 3 stops (factor 8). Normally the camera and the switched setting is intended for nighttime IR photography in which the 2 emitters light the scene. You can take pictures in total darkness provided the scene is lit by the two transmitters.
I also use a raspberry PI computer with IR sensitive camera's for watching wildlife in my garden. Those camera's also have the filter removed that is normally present in daytime cameras.
So, how big is your scene? What do you need to photograph? Tell use some more about the circumstances. No light available at all? |
Looks like my excitement was premature. I don't get to do the shoot. I'll tell more about it after it's over. |
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