A Little Bag Of Primes Lens: The Tamron 20-40mm f/2.8 Di III VXD. I had a nonsense thought yesterday. Not the first time and will not be the last. The thought: This 20-24mm has become my 35-150mm of wide angle lenses. What am I on about? I am glad I imagined you asked. The 35-150mm … Continue reading A Little Bag Of Primes Lens: The Tamron 20-40mm f/2.8 Di III VXD.