Why is Quan Huafu SLR expensive? Is it necessary for ordinary photographers?

Quan Huafu digital SLR refers to "the size of digital SLR photosensitive element", which is the same as the traditional 135 film (36×24mm). However, the photosensitive element of non-Quan Huafu digital SLR is smaller than the traditional 135 film. For example, the size of the common APS-C photosensitive element is about 22×15 mm. What are the advantages of Quan Huafu digital SLR? First, because the size of the photosensitive element of Quan Huafu digital SLR is large, it means that the area of a single photosensitive pixel is large under the same pixel; The large area of photosensitive pixels brings better photosensitive performance, such as less noise, wider dynamic range and so on. Secondly, Quan Huafu digital SLR also puts forward better requirements for lens quality. Taking Canon EOS 5D and 1Ds series as examples, only high-priced red-ring lenses or even fixed-focus lenses can give full play to the strength of full-frame digital SLR, otherwise, full-frame digital SLR is more likely to expose some weaknesses of even magnifying lens, such as dark angle, chromatic dispersion and decreased edge resolution. Therefore, if consumers buy Quan Huafu digital SLR, they should also be willing to invest in the follow-up lens.

Function determines the price, and ordinary photographers need to look at their own economic ability and actual shooting needs. Just like ordinary people can drive, is it necessary to buy a Mercedes or a BMW?