Hi Rob. I recently bought the LAOWA 8-16mm F3.5-5 lens. The diameter of the filter is exaggerated (86mm) and I only bought a 550nm filter (B+W). This lens produces important hotspots. So far I have used it without filters but thanks to your video I will try to take some photos with the 550nm filter too. Thank you.
Rob once again, thanks for passing on your knowledge. Forgive for using this video to ask a profiles question. I’ve just come across the fact that the Adobe DNG profile editor doesn’t work with the latest Mac OS. There is a suggestion on the Adobe forum that you now need to use the Profiles SDK. But how do you use it to create an IR profile, ie without using the DNG profile editor? If anyone knew how to do this, I thought it would be you. Once again, sorry to piggyback on this video.
I create infrared profiles for hundreds of cameras. If your camera is not listed, there are instructions for adding cameras. You can download them here: 590.red/infrared-profile-pack
Hi Rob! Good to see that hotspots can be corrected quite well. Are Newton rings and hotspots the same? And if not, how to prevent Newton rings? Thanks in advance, Bianca
Newton's rings are different than hot spots. You don't see many Newton's ring with infrared, they are mostly an issue with scanning or photographing negatives. Have you seen these in your IR images?
@@robshea well, I'm not sure. They do look like a hotspot, but with several rings around them. I was wondering if it's a thing in infrared. It also can be worse or better with the direction of light. I saw you had a hotspot with a ring around it, but have you see them with several rings?
@@biancanieuwkerk7216 I took a look at your image, and it is certainly a hot spot. Hot spots can sometimes appear as concentric rings with various degrees of intensity. You could certainly look for lenses without this effect. In the last example of this video, I talked about using multiple radial filters to address. You can also check out these videos for examples. How to Fix Hot Spots in Infrared Photos? ruclips.net/video/sD5iJeHcLJE/видео.html Infrared on iPhone or Any Mobile Phone ruclips.net/video/4SqtnlPX0RU/видео.html
The light frame is the image itself. Using flat frames could be an interesting idea to test. Flat frames are the shot with a white cloth over the lenses to capture brightness differences. (Bias frames and dark frame would not apply, since they capture no light through the lens.
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Hi Rob. I recently bought the LAOWA 8-16mm F3.5-5 lens. The diameter of the filter is exaggerated (86mm) and I only bought a 550nm filter (B+W). This lens produces important hotspots. So far I have used it without filters but thanks to your video I will try to take some photos with the 550nm filter too. Thank you.
Nice.
Rob once again, thanks for passing on your knowledge. Forgive for using this video to ask a profiles question. I’ve just come across the fact that the Adobe DNG profile editor doesn’t work with the latest Mac OS. There is a suggestion on the Adobe forum that you now need to use the Profiles SDK. But how do you use it to create an IR profile, ie without using the DNG profile editor? If anyone knew how to do this, I thought it would be you. Once again, sorry to piggyback on this video.
I create infrared profiles for hundreds of cameras. If your camera is not listed, there are instructions for adding cameras. You can download them here: 590.red/infrared-profile-pack
Rob, thanks for the link.
Hi Rob! Good to see that hotspots can be corrected quite well. Are Newton rings and hotspots the same? And if not, how to prevent Newton rings?
Thanks in advance, Bianca
Newton's rings are different than hot spots. You don't see many Newton's ring with infrared, they are mostly an issue with scanning or photographing negatives. Have you seen these in your IR images?
@@robshea well, I'm not sure. They do look like a hotspot, but with several rings around them. I was wondering if it's a thing in infrared. It also can be worse or better with the direction of light. I saw you had a hotspot with a ring around it, but have you see them with several rings?
@@biancanieuwkerk7216 I took a look at your image, and it is certainly a hot spot. Hot spots can sometimes appear as concentric rings with various degrees of intensity. You could certainly look for lenses without this effect. In the last example of this video, I talked about using multiple radial filters to address. You can also check out these videos for examples.
How to Fix Hot Spots in Infrared Photos? ruclips.net/video/sD5iJeHcLJE/видео.html
Infrared on iPhone or Any Mobile Phone ruclips.net/video/4SqtnlPX0RU/видео.html
@@robshea thank you!
Did you convert your GFX50, Rob ?
My Fujifilm GFX50s is a full spectrum conversion. I use STC Optics clip-in filters for 590, 720, and 850nm. I also use an external IR Chrome filter.
Couldn't you remove hot spots using a "light frame" technique, similar to what astrophotographers use?
The light frame is the image itself. Using flat frames could be an interesting idea to test. Flat frames are the shot with a white cloth over the lenses to capture brightness differences. (Bias frames and dark frame would not apply, since they capture no light through the lens.
@@robshea If you use a camera, instead of a telescope, you could do this with an expo disk.