Interestingly, Jaggies are often a result of aliasing. They are one example of an artifact caused by aliasing when looking at a continuous signal. While we have looked at jaggies when drawing polygons, the same may occur for a low resolution camera. The camera samples electromagnetic waves to generate an image, but the low resolution causes undersampling and may result in artifacts such as jaggies depending on the sampling algorithm. The same may occur for image resizing, or drawing polygons as demonstrated in these slides. Here’s an interesting graphic demonstrating what aliasing due to undersampling looks like.
Yup! Nice comment. There are many forms of sampling in graphics, and therefore many forms of aliasing! Your discussion of cameras is one of these examples.