The effect of light pollution filters on native one-shot color camera white balance
The effect of light pollution filters on native one-shot color camera white balance
Hello,
Rather than pasting a large document here and taking up lots of space, I've instead written a report you can access by downloading it here:
https://docs.google.com/document/d/127e ... sp=sharing
I have enabled the can comment function in the document, so please feel free to leave your comments in the actual writeup if you wish to provide any edits or spot any errors in need of corrections. Or leave them here
I hope this helps, it was a test I did for my own "finding out", which turned into me writing it up to share with you.
All the best,
Minos
Rather than pasting a large document here and taking up lots of space, I've instead written a report you can access by downloading it here:
https://docs.google.com/document/d/127e ... sp=sharing
I have enabled the can comment function in the document, so please feel free to leave your comments in the actual writeup if you wish to provide any edits or spot any errors in need of corrections. Or leave them here
I hope this helps, it was a test I did for my own "finding out", which turned into me writing it up to share with you.
All the best,
Minos
Re: The effect of light pollution filters on native one-shot color camera white balance
Very interesting indeed.
Thanks.
Thanks.
Re: The effect of light pollution filters on native one-shot color camera white balance
A sturdy piece of work Minos. Good to see a systematic investigation and detailed write-up. It will take a couple of reads for me to digest thoroughly.
Dave
Dave
Re: The effect of light pollution filters on native one-shot color camera white balance
Thanks,
I suppose the quick take home message is this graph, which shows how each LP filter affects the %RGB signal intensities for my OSC camera. 0% difference in all three RGB signal intensities would achieve a "theoretically unison" white balance.
It shows how green is still the most intense signal except from the UHC+UV/IR combo, which had an orangey cast (see figure 15 in the write-up above).
None of these LP filters achieved a particularly unison native white balance in this specific test, but some interesting results arose.
Cheers
Minos
I suppose the quick take home message is this graph, which shows how each LP filter affects the %RGB signal intensities for my OSC camera. 0% difference in all three RGB signal intensities would achieve a "theoretically unison" white balance.
It shows how green is still the most intense signal except from the UHC+UV/IR combo, which had an orangey cast (see figure 15 in the write-up above).
None of these LP filters achieved a particularly unison native white balance in this specific test, but some interesting results arose.
Cheers
Minos
Re: The effect of light pollution filters on native one-shot color camera white balance
Thought I'd post the raw screen grabs from all the filters I tested (some are totally non sensical!) for quick reference.
The only filter that achieved native OSC white balance is the ZWO 850nm
Sorry for all the subsequent posts, I could only fit three pics in each post.
I hope to add more test results in the future.
The only filter that achieved native OSC white balance is the ZWO 850nm
Sorry for all the subsequent posts, I could only fit three pics in each post.
I hope to add more test results in the future.
Last edited by mAnKiNd on Mon Feb 10, 2020 9:20 pm, edited 3 times in total.
Re: The effect of light pollution filters on native one-shot color camera white balance
Last edited by mAnKiNd on Mon Feb 10, 2020 9:22 pm, edited 1 time in total.
Re: The effect of light pollution filters on native one-shot color camera white balance
Last edited by mAnKiNd on Sat Mar 07, 2020 7:26 pm, edited 1 time in total.