In macro photography, what if the subject is on the negative?

In this photography, if the subject is on the negative, the methods are as follows:

1. Adjust the focal length: If the subject is on the negative, you can try to adjust the focal length of the lens to make it farther away from the subject before shooting.

2. Adjust the aperture: You can try to adjust the aperture size to make it smaller, thus increasing the depth of field and making the subject clearer.

3. Use the extension ring: The extension ring is an accessory for macro photography, which can increase the distance between the lens and the camera, thus making the subject clearer.

4. Use the reversal ring: the reversal ring is an accessory for macro photography, and the lens can be mounted on the camera in a reversed manner, thus increasing the magnification of the lens and making the subject clearer.