When purchasing a SLR camera, how do you inspect the product?

Then let me tell you about my experience when purchasing.

1. Outer packaging. Check to see if it has been opened, but some machines have no seals on the outer packaging. Then check whether the serial number of the fuselage and the outer packaging box are consistent. Under normal circumstances, licensed goods are consistent, but parallel imports are generally inconsistent because they enter customs separately. You can check the serial number on the official website or by calling 400

800.

2. Machine appearance. Check to see if there are any scratches, especially on the battery, lens mount, etc. If there are slight scratches, it means it has been installed and tried.

3. Accessory inspection. Check the packing list to see if there are any missing accessories. Whether all accessories can be used normally. Such as chargers, data cables, etc.

4. Lens. It mainly depends on whether there are scratches on the bayonet. If there are any, then the lens has been used. If there is an aperture adjustment, you can open the aperture to the maximum and see if there are any mold or dust inside the lens.

5. Machine performance. Install the battery, put on the lens, and take a picture against something that can clearly distinguish the focus point, such as a newspaper, to see how the lens fits with the body and whether there is any out-of-focus phenomenon. If so, change the lens or ask the seller to adjust it. Test whether all functions of the machine are used normally. Remove the lens, replace the body cover, adjust to manual focus, take a few completely black photos without the lens, put them on the computer carefully, check if there are any dead spots on the CMOS, these are the few things you see on the computer Are there any individual bright spots or noise spots at fixed positions on the completely black picture? If so, it means there is a problem with the CMOS.

Mainly these aspects.