If you are using a 720nm filter on a converted camera, the exposure times will be short. To get long exposures, you'll need an ND filters that is rated for IR light. Many ND filters are not rated for IR light. I recommend the Hoya Solas IRND filters: 590.red/irnd
i have found a filterless way to get my favorite IR shots in color - custom white balance against the blue sky. most images come out very close to the kolari filter with a little less deep blue in the sky and a little less deep red in the leaves. this is with a samsung nx-mini with IR filter removed from the sensor and may not be the same for other cameras due to different color science.
I've purchased both inexpensive and quality filters. You can get good results with inexpensive filters, but there is risk. Inexpensive filters are not as reliable in their published transmission ratings, sometimes they don't even publish transmission graphs. If you have a converted camera, you might not notice. If your camera is unconverted, the light leaking from lower wavelengths could ruin your images. I've seen many people waste lots of time chasing these problems. So long as you understand the risk.
You have a great voice for narrating audiobooks. :)
Thoughts on filter to be used for long exposure with a camera converted to 720nm
If you are using a 720nm filter on a converted camera, the exposure times will be short. To get long exposures, you'll need an ND filters that is rated for IR light. Many ND filters are not rated for IR light. I recommend the Hoya Solas IRND filters: 590.red/irnd
i have found a filterless way to get my favorite IR shots in color - custom white balance against the blue sky. most images come out very close to the kolari filter with a little less deep blue in the sky and a little less deep red in the leaves. this is with a samsung nx-mini with IR filter removed from the sensor and may not be the same for other cameras due to different color science.
Hey Rob, do you still have the chapter 3.2 video about Uv and IR filters up?
This is a sample chapter. You can get the entire book at www.colordoesntexist.com/order
When I've sent you sample pictures taken with 10-15$ filters during one of your live streams you didn't notice any image degradation.
I've purchased both inexpensive and quality filters. You can get good results with inexpensive filters, but there is risk. Inexpensive filters are not as reliable in their published transmission ratings, sometimes they don't even publish transmission graphs. If you have a converted camera, you might not notice. If your camera is unconverted, the light leaking from lower wavelengths could ruin your images. I've seen many people waste lots of time chasing these problems. So long as you understand the risk.