Metrics kerning and optical kerning

- [Voiceover] When it comes to automatic kerning,…you have two options, metrics and optical.…There's no right answer here, the best option…is the one you like the best.…But, here is the difference between them.…Metrics kerning will use the metrics values…that part of the font, the kerning pairs…that are created by the type designer.…Optical will disregard those and in design…will adjust the spacing between the letters…according to the shapes of the letters.…

Now, there's now way of knowing which…is going to look best without trying them out.…And here I have two identical passages,…one with metrics on the left and on the right with optical.…And there's very little difference between them,…but there is a slight difference.…Sometimes the difference will be noticeable and…that is when there are very few kerning pairs in the font.…So, if you're working with a cheaper font…or a lower quality font, chances are it won't…have as many kerning pairs as a good quality font.…

And in that case, optical kerning might be your best option.…