Photography SLR problem

1 Question: Correct answer. The deviation of the scale in the+direction is overexposure, the deviation in the-direction is overexposure, and 0 is appropriate exposure.

Question 2: Correct answer.

Question 3: Correct answer.

4. Question: When the exposure is appropriate in the range of P, the camera gives the best exposure combination, and there will be no scale. In case of underexposure or overexposure, the scale will flash, indicating that the current exposure is beyond the setting range of the current shutter or aperture. You need to turn the dial to adjust the exposure combination (flexible mode, P* will appear) until the ruler disappears;

In files A and S, if the selected aperture or shutter can ensure proper exposure, only the exposure combination value will be displayed, and no scale will appear. When the exposure combination exceeds the range of aperture value or shutter value, a scale will appear, which will prompt whether it is underexposed or overexposed. You can change the aperture or shutter value according to the prompt until the scale disappears. In addition, in P, A and S files, if the exposure compensation value is adjusted, the scale will always appear, indicating whether to add compensation or subtract compensation;

In block M, the exposure combination is always displayed, and the cursor is always displayed, and the current exposure is insufficient or excessive. You can choose whether to correct the aperture or shutter value according to the exposure needs.

I hope my answer is helpful to you.