#12. Shoot to Frame Size
Shoot to frame. All that means is to figure out in advance what the final image size (aspect ratio) needs to be and make sure your image fits. For example, most DSLRs shoot in a 2:3 aspect ratio (frames are 2 inches tall and 3 inches wide. It's how you get a 4" x 6" image ). Some phones shoot in a 16:9 aspect ratio with newer phones going to 18:9. If you are posting to places like Instagram, it prefers 1:1 aspect ratios (square). If you try to pack an 18:9 photo into a 1:1 format, things can go terribly wrong. You can still shoot with an 18:9 (or any other ratio) camera to post on Instagram, but you need to zoom out or back away from the subject so that you can crop the photo accordingly. Or, on more recent cameras and phones you can easily change the aspect ratio so that what you preview in the viewfinder or on the screen before you shoot what the final shot looks like.
If you have made it to the next level and are working with other creatives like editors, producers, art directors, or for print, make sure you coordinate with them on the aspect ratio. They may be concerned about layout, column size, or trying to meet the obligations of an advertiser. This includes knowing what orientation is needed. Do you want to shoot in Landscape (picture is wider) or Portrait orientation (image is taller than it is wide.)