This is a great video for beginners and experienced photographers alike who are looking to get more out of their gear. In this video, Simon d'Entremont gives a definitive explanation of different lenses and how they can work best for you.
If you are new to photography, there can be an overwhelming amount of information out there about what gear to use. For me, one of the most important purchases will always be new lenses. There are many different lenses available out there for all systems and whether you want to shoot wildlife, astrophotography, or portraits, knowing the difference is important.
What is f/2.8 or f/4.0? Primes or zooms? What lens is right for different jobs? Simon d'Entremont has you covered in this very in-depth video, where he explains the difference between types of lenses, how they work, and other bonus tips. This video is very valuable for those new to the photography world, who are picking up their first DSLR or mirrorless camera systems.
For the more experienced photographers or those wishing to move to a new system, it can never hurt to have a refresher and maybe even see information which you might not have seen before.