Use Canon 60D lens 15-85 to take a group photo of 300--400 people

1. About 30 people can stand on each step. Is it appropriate for the camera to be balanced and fixed on the faces in the fifth row? Should I change several focus points when shooting to facilitate post-PS? , please give suggestions if it is not suitable. -----There are 13-14 rows of people in a police station, so just focus on rows 5-6. Because the depth of field in the back is larger, the focus point should be slightly closer to the front. No need for post-production synthesis, that would be too troublesome. Use the wide-angle end for the focal length of the lens. You can see for yourself. If the deformation is severe, go further back and increase the focal length. If the space is limited and you can't go back, then you have no choice but to adjust it later.

2. The shooting location is in a shady place facing north. What is the appropriate aperture? ------It doesn't matter if it's in the shade. It's best to take pictures when the weather is better. You can use an aperture of about 11-16, so that the depth of field is large. If the aperture is too large, the depth of field will not be enough, and the front and rear of the focus will be easily blurred. If the shutter speed is very slow, you can increase the ISO appropriately, up to 800. Be sure to use a tripod.

3. Is it okay to set the photo format to RAW? ----Okay, that's good.

4. How to arrange the leadership position? Should the leader stand in the first row or where is the appropriate position? ------The leader is usually placed in the middle of the first row.