150-600: Sigma Vs Tamron GH5 Comparison (with Teleconverter)
The micro four-thirds sensor of the GH5 is loaded with reach (crop). I wanted to take advantage of that and do a comparison of video footage using both the Sigma 150-600mm f/5-6.3 DG OS HSM Contemporary Lens for Canon EF and the Tamron SP 150-600mm f/5-6.3 Di VC USD G2 Canon EF. Both are utilizing a metabones speedbooster ultra (.71x).
To make things more interesting, I attempted using them both with my Canon 2xiii Extender. In my particular case, both lenses worked with the extender, although there were some anomalies with performance
(Disclaimer: This video is not a recommendation that you try this as I don't know that it will work with your setup. I'm not an expert, just wanted to try it with my own gear.)
Hopefully the comparison helps for those looking for real video samples as opposed to stills. Also, in hindsight it would've been better to shoot in a more controlled setting where the subject wasn't ever changing (like snow and water and light etc.) Lesson learned.