
With today’s typical electronic cameras, we still compare digital sensor sizes to the old traditional 35mm strip of film.

This reduces mathematically down to a 3:2 ratio. The actual image size of each frame was 36:24mm. The 35mm strip of film was measured at 35mm tall.

The most popular film size ever was called 35mm. All of these seemingly random numbers are based on film sizes from decades ago. Virtually every popular digital camera has a sensor with one of these two aspect ratios: 3:2 or 4:3. These dimensions are expressed in a ratio – width:height (width always comes first). When setting up your camera to capture a photograph, image size is the term used to describe the active horizontal and vertical dimensions of your camera’s digital sensor the aspects you are opting to use.

In the professional photography industry, we more often refer to image size as the aspect ratio. Both terms are interchangeable in this article. For instance, 16:9 is the smallest file size recorded of the options below. What do all those numbers mean, and which is our wise option? The app menu name image size may be misleading in itself, as it might be assumed by the drone operator that the larger numbers mean a larger image size. Image size 4:3, 3:2, or 16:9 – there is plenty of uncertainty around this particular camera menu setting in the DJIGo4 app.
