How can a SLR distinguish between true and false?

Digital SLR is not true or false, only the difference between parallel imports, licensed products and second-hand renovation.

The materials of parallel imports and licensed products are the same, and the production standards and environment are the same.

Parallel import refers to the purchase of goods through informal channels, without strict transportation control, and there are potential performance hazards, such as bumping or getting wet during transportation. The characteristic is that there is no invoice at the time of purchase, no manufacturer warranty, and no so-called store warranty.

Licensed goods refer to the purchase of transportation through formal channels (which will generate tariffs, so the price will be higher), with invoices and after-sales warranty.

Appraisal of second-hand refurbished SLR;

Most of the boxes that pack refurbished goods are worn out, especially the edges of the boxes are badly worn.

Accessories for refurbished goods are often incomplete, and there will be obvious traces of use. As long as you pay a little attention, you can see that there will be obvious used scratches on the metal contacts, especially the batteries.

The fuselage of refurbished goods must have been used more or less before. Although the appearance has been renovated, we can still see some clues as long as we carefully identify it. For example, the origin label sticker at the bottom of the camera is the most easily scratched and worn part, which can be carefully identified. You can also see if there are any signs of disassembly of the screws, and see if the decorative strips and buttons are worn.

SLR cameras (SLR cameras) are also called SLR cameras. Refers to a camera that uses a single lens, through which light shines on the reflector and takes a view through reflection.

The so-called "single lens" means that the photographic exposure light path and the framing light path * * * use one lens, unlike the paraxial camera or the double-reflex camera, the framing light path has an independent lens. "Reflection" means that a plane mirror in the camera separates the two light paths: when the mirror falls during framing, it reflects the light of the lens to the pentaprism and then to the framing window; When shooting, lift the reflector quickly, and the light can shine on the film or photosensitive element CMOS or CCD.