Product Reviews
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This thing is just amazing
I’ve been at it for about six months and I couldn’t figure out how to capture nebulae without blowing out stars. I felt like I should be getting much better pics from my ASI294 MC-Pro and Apertura 60mm Doublet. Then I got this filter. Attached is my first pic (30 x 5 minutes) of the Flsme Nebula with horrible light pollution.

Optolong L-Extreme Goodness!
This filter has transformed how I work, letting me shoot during moon cycles and in town. I'm using it with a Samyang 135 and DSLR, and it has worked great on my heart and soul images, the first I tried with it. Nebulosity is noticeably enhanced and stars are greatly reduced.


Optolong L Extreme Dual Band Filter - 2 inch
I live in a Bortle 7/8 zone and this made a huge difference in bringing out the nebulosity for my deep sky objects. Can’t wait to get the newly released Optolong L Ultimate!


Optolong L-eXtreme
To be completely honest, I was absolutely amazed at the difference this filter made when imaging nebula’s. For example the heart nebula was nearly obscured by the stars, with the filter it was amazing the detail in the nebula and the background was very clean. It works and it’s worth the money!