In 2013, Tamron released the SP 150-600mm f/5-6.3 Di VC USD, which became a runaway hit for the company, offering access to extreme focal lengths at a much more affordable price than before. In the decade since, 150-600mm lenses have exploded on the market, with many options available. This excellent video review takes a look at one such option, the Sigma 150-600mm f/5-6.3 DG DN OS Sports, and the sort of performance and image quality you can expect from it in practice.
Coming to you from Stefan Malloch, this excellent video review takes a look at the Sigma 150-600mm f/5-6.3 DG DN OS Sports lens. No doubt, for the applications that one will usually use such a lens, such as bird and sports photography, you will normally need fast shutter speeds, and f/5-6.3 are not particularly fast apertures (though that is how the price is so low). That being said, since 2013, the high-ISO capabilities of cameras have come quite far, and those slower maximum apertures are not as much of a hindrance as they used to be. And when you consider what it would cost to upgrade to an f/4 or f/2.8 supertelephoto lens, the value becomes quite obvious. Check out the video above for the full rundown from Malloch.