Why are the photos taken by the studio not clear?

1, the focus is obviously not on the front belt buckle, but on the back.

2. More attention should be paid to lighting and setting. The belt buckle is highly reflective and needs soft light. The setting angle needs to be adjusted, slightly tilted upward or slightly tilted downward, subject to the light reflection that does not reflect the white meter.

3. Since shelves are used, why should ISO use 800? No aperture is needed to receive F 10. It is recommended to use the first gear, ISO 100, F5.6, and single focus. Focusing must be precise and accurate.