| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| warren | " " | Read more » | about 11 years ago | |||
| cfastie | "The relative amounts of NIR vs visible light in each channel is definitely a big and important unknown. The camera can't do anything to change that..." | Read more » | about 11 years ago | |||
| nedhorning | "With the Infrablue filter there is both visible and NIR light hitting the camera sensor and it would be helpful to know how different wavelengths a..." | Read more » | about 11 years ago | |||
| mrrg | "okay, I was thinking you do not need to characterize it just treat all of it as NIR if you have a good filter.. Why do you need to characterize it?..." | Read more » | about 11 years ago | |||
| warren | "I guess the WB introduces a big unknown about the relative amounts of NIR vs visible light. One way the NIR and VIS might mix in blue is that perha..." | Read more » | about 11 years ago | |||
| nedhorning | "Sorry for not explaining this better. We were just trying to understand which sensor channels are recording which wavelengths of light. The images ..." | Read more » | about 11 years ago | |||
| mrrg | "Maybe I have misunderstod what you try to do.. but what if you add thicker sheet of HDPE plastic in front of the camera then only NIR would get thr..." | Read more » | about 11 years ago | |||
| nedhorning | "Thanks for posting this Jeff. The results are interesting. Most of the LEDs that I've seen have band widths in the 5nm - 10nm range. It's important..." | Read more » | about 11 years ago | |||
| straylight | "wow, good results jeff, as it happens, I'm about to do a similar test on some filters which we use for another experiment. It is rather important t..." | Read more » | about 11 years ago | |||
| eustatic | "someone make a pink elephants joke " | Read more » | about 11 years ago | |||
| patcoyle | "Interesting to see the range of images. " | Read more » | about 11 years ago | |||
| cfastie | "That's a good thing to test, and it's easy with your Superblue G11 which has two custom white balance presets, one for a blue surface in the shade ..." | Read more » | about 11 years ago | |||
| nedhorning | "Would the result improve if you set white balance using a neutral target? Concrete is pretty even across the visible and near IR. " | Read more » | about 11 years ago |