The Lightest 300mm 2.8 lens ever: Replacing 600 f/4?

In this video, I unbox the Sony 300 2.8 and share the comparison with several other 2.8 lenses, also talk about how to pack them for travel and why my obsession on 2.8 lenses.
I am going to do an in depth masterclass in a few days, make sure to sign up for my email list so you don't miss the announcement.
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