This Alpha Universe Podcast is all about lenses. AlphaUniverse.com's Christopher Robinson speaks with Lensrentals founder and all around optical mad scientist, Roger Cicala to talk about what makes a great lens and a proper lens review.

We connect with Sony's El-Deane Naude to get the inside story on what makes a G Master lens a G Master.

And Roger Cicala comes back to offer up some Do This Now Tips  about how to clean a lens the right way.