Jewelry photography parameters

Figure 1: the exposure is not allowed, the light is dark, the white balance is set incorrectly, the background is yellow, and the whole picture is not transparent enough!

Figure 2: The exposure of the picture is inaccurate, the focus is out of focus and the aperture is too large.

Suggestion:

1: Aperture F8- 13, which is not small.

2. You can set the exposure time at will by using a tripod, and the image quality will not be lost due to jitter. Because of the image quality, the shutter is too slow or too sensitive, or the aperture is too large, which is one of the influencing factors, so a tripod is necessary on the basis of ideal parameter setting.

3. the arrangement of light should be accurate, and the picture would rather be too explosive than too dark. The light source in the picture is slightly insufficient, so we can increase the light source, but we can't properly improve the ISO to deal with it.