Excuse me, heroes, what does a full-frame camera mean? What's the difference with ordinary cameras? thank you

The so-called Quan Huafu is relative to the previous 135 film. If the photosensitive chip (CCD or CMOS) of a digital camera is as big as the previous single negative 135 (24X36), we call it Quan Huafu Digital Camera (SLR), and the English name is Full Frame DSLR. The bigger the CCD, the better the picture quality, but the price of CCD is the same as that of LCD TV. The bigger the area, the more expensive it is, so digital SLR is generally more expensive than small digital SLR, and Quan Huafu digital SLR is more expensive. Many photographers like Quan Huafu digital SLR, because Quan Huafu CCD has a large area. If it is/kloc-0.0 million pixels, the imaging of full-frame CCD (especially high ISO) is certainly better than that of non-full-frame CCD. But the price of digital SLR in Quan Huafu is too expensive. Opinions vary as to whether the slightly better quality of ISO 1600 is worth spending several times more.

Another advantage is that Quan Huafu's camera can be directly used in the lens of the previous film machine era, and there is no conversion factor, so the lens compatibility is good. ...

Reference from: Yang Fei's "Quick Guide to Tourism Photography in the Digital Age"