Quote:
Originally Posted by RyanJones
Hi Granada,
A CLS filter essentially only cuts out the region of light associated with the wavelengths on light emitted by artificial light sources eg. Street lights. On the other hand your O3 Ha and S2 filters only let though the specific wavelengths of light associated with the respective gasses. Hence, if you are shooting using a specific band filter, there should essentially be nothing left for the CLS to cut out that it is designed to do if that makes sense ? The band specific filter has already cut it out.
I hope this clears things up
Cheers
|
Yep that makes perfect sense - thank you.
I guess that begs the question then - if you're planning on purchasing/utilising those other filters, is there any point in purchasing a CLS filter as well? Would you only use it in situations where no other filters are needed, but there is just too much light pollution in the way (i.e. planetary, star trails, etc.)?