A camera with a crop (APS-C) sensor and the one with a full frame sensor give different results with the same lens. It can sound abstract in theory before you actually see the results. Photographer Ilko Alexandroff created a comparison between APS-C body and a full frame body, using 85mm and 135mm lenses on both. So, from this video, you can see exactly how these lenses perform on a crop and on a full frame body, and how the combination of the camera and the lens affects the photo. It’s interesting to see the changes, and if you are still relatively new to this topic, you will find this very useful.