5/31/2023 0 Comments Group photo gun fight![]() For consistent color temperature, needed to avoid color casts that can't be eliminated, you will want to have enough light to overpower the ambient (including artificial) light in the room. Even with a lot of lighting, your additional challenges will be evenness of lighting and dealing with shadows. For maximum sharpness, you probably want to keep your ISO at or below 200. The diffraction at that depth of field will lead to a less than sharp photo. I would not use f/18 as recommended by another respondent. You will need a great deal of light to light the subjects at the appropriate depth of field and ISO. On a cropped-frame camera, you will still need to back up quite a bit. Wider lenses are usually less sharp in the corners. I would use a prime lens, probably a 35 mm lens for edge sharpness. ![]() A 18-200mm lens is not a lens known for edge sharpness at that focal length. You may be reaching the limits of your equipment. It is just your lens that is only sharp in the center, especially if you shot it "wide open" at F/3.5-5 so you should find a nice prime instead that's sharp across the frame at F/4. This concludes that you are not having any DOF issues. 35mm) you would still be looking at a much deeper DOF than you need. Even if you went further away and zoomed in a bit (e.g. It turns out that you have the hyperfocal distance in this case - even if your lens has a magical F/1 (but you probably have more like 3.5 max aperture) you are looking at a 5meter deep DOF. Here you can compute you DOF at a certain distance and focal length for your camera: The worst case is 12.5-9 = 3.5meters of DOF.Īt f=18mm you need to be 9 meters away - calculated on this: Say, the group is taking a space of 2m depth and 12m wide - the distances will look like this: If they are standing in a rounded fashion, the distance is more uniform. When a large group sits on a straight line the subject distance from the center position to the sides varies by more than the distance from the first row to the last row.
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