Optolong L-eXtreme Tested from Tokyo!!
14:05
TOO GOOD TO BE TRUE? Testing the SVBONY SV220, basically an L-eXtreme for half the price
21:36
When a filter BETRAYS YOU.... FILTER BATTLE!
13:07
Optolong L-Quad Enhance Filter Review
14:58
Is the Optolong L-eXtreme filter any good? : A Review
23:04
Optolong L-Ultimate Review on the Canon 1200D DSLR and ZWO 533MC Pro Cameras
11:31
Going narrowband? AVOID this misconception!
31:14
Light Pollution filter comparison. Orion SkyGlow LP filter and the IDAS LPS-D3 filter.
21:22