Just a bit of testing with the Kenko 2x teleconverter on the Tamron 18-400mm lens. When using the Canon 80D, it has a 3x-10x Digital Zoom, so the 400mm lens was 800mm, and then 2400mm with 3x digital zoom, and up to 8,000mm at the max of 10x. And yeah, I still prefer the Nikon P900 to this -- I think (lol). I did shoot footage with the P900 but didn't include it. This wasn't the clearest of nights so it's a tad difficult to judge.
2:25am to 3:06am Thursday July 5th, 2018, NE Ohio, SE & Southern Sky
~Jayling
(Ohio is in the Eastern Time Zone)
-Canon 80D with Tamron 18-400mm Lens
-Kenko AF 2.0x Teleplus HD DGX Teleconverter for Canon EF-S & EF Lenses
-Atomos Ninja Flame 7" 4K Field Monitor/Recorder
-Nikon P900 with 83x optical zoom & 166x digital zoom
-B&W ND Filters, 10 Stop & 6 Stop Stacked for Solar Viewing
