I straighten and crop almost every shot. Shoot loose, crop for composition and aspect ratio in post. A variety of reasons:
- I'm shooting fast (e.g. a live performance/show) and don't have time to carefully compose every shot. If I try to compose precisely, then the performer suddenly moves or jumps, I've cut off an arm or head and the shot is ruined.
- I don't know what aspect ratio I'll need for the final output.
- I'm going to make perspective/distortion/lens corrections, which sometimes need a LOT of extra buffer around the edges.
- I hold the camera crooked, especially in portrait mode.
OhLook wrote in post #18225687
Don't upscale cameras let you set the aspect ratio? Mine (G series, prosumer grade) has several choices.
Yes, but they achieve this by simply using less of the sensor. The sensor isn't changing its physical shape as you select different aspect ratios.
However, I don't know if they use less of the sensor and make a raw file with a different aspect ratio; or, if the raw file keeps the image from the entire sensor, and only the in-camera JPEG is cropped to the new aspect ratio.