8 Advanced topics
8.1 Learning more about optics
This chapter dives into the details of basic optics. You don’t have to know this stuff to take good pictures, but I believe that mastery of a set of tools requires some understanding of how it all works. And photography is a pretty technical field, which is why I’ve dedicated a fair bit of space to these topics.
8.2 What is focal length?
In chapter 2, I described how focal length is a key factor in determining the field of view of a given lens. But focal length values aren’t arbitrary numbers.
What focal length isn’t
There are many popular misconceptions. Focal length has nothing to do with the ...
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