Croped Lens Vs Cropped Lens

Considering this, full frame lenses have a bigger image circle than the image circle on crop lenses. This is the key difference between these two lens types and we have seen this in the many examples of cropped vs full frame. As I said earlier, full frame lenses have no problem adjusting to cropped sensors because the image circle is big anyway. On the other hand, if you were to put a cropped lens on a full frame sensor the image circle would be too small to cover the entire sensor and, as a result, you would get blackened vignette edges around your picture. This is why cropped lenses do not work with full frame sensors. Crop lenses, have less glass inside and are generally easier to carry around because they are lighter in terms of weight