Maybe you know that varifocal lenses are designed for stills and SLR cameras, and parfocal are designed for cinema and broadcast. But why would you want a parfocal zoom lens if you can use a varifocal even for the videos? What are the differences, and why does it matter anyway? This video by Vistek gives a great illustration of all this. It doesn’t only tell what the differences between the lenses are, but it gives examples that will make it much clearer to understand.
Have you ever sat down with a group of photographer and gotten into a trivia face off. You know those kinds of discussion where one would go “Oh yea? So what is the F-stop that comes after F/64?”* Or “So, what is hyperfocal distance?”** or “what’s the fastest sync speed on a D70?”***
Those can sometimes get quite frustrating. Especially if all participants are quite knowledgeable.
Before you learn how I lost that contest, see if you can identify what the following lenses have in common:
- Canon EF 70-200mm f/2.8L USM
- Canon 17-40mm f/4L
- Canon 16-35mm f/2.8L II
- Tokina 11-16mm f/2.8 AT-X116
- Nikon 17-35mm f/2.8D
- Nikon 24-70mm f/2.8G
- Nikon 70-200mm f/2.8G mkI