It is a photographic image obtained without using a camera, it is obtained through the placement of objects on top of a photosensitive surface such as a photographic film or paper and subsequently exposure to direct light. A frame is each of the chemically imprinted images on the film strip of celluloid. The first photographs were stills.
A film retis frame varies in size depending on the film format. In the amateur format it is small and is 8 mm, its measurements are approximately 4.8 x 3.5 mm. While in imax format it is larger and measures approximately 69.6 x 48.5 mm. The larger the frame, the sharper your image is on the promotion screen.
However, the term frame is confused with that of video frame. Both terms are considered equivalent, but they are not the same for the following reasons:
- A frame is not made up of divisions, but the frame is made up of two fields, lower and upper.
- The frame is a visible emulsion, either positive or negative allowing you to identify where to cut or something similar. On the other hand, a frame is an electrical signal that may or may not be recorded.
- The Number of frames per second was mainly adopted for logistical reasons, when the number of frames per second was the compatibility with the different electrical frequencies.
- The frames were identified with the same number on the foot. Meanwhile, with the pictures, they tried to do something very similar using metallic particles, their numbering was achieved using a track with time codes and not a physical division.
Some of the types of phonograms and their features are:
- Keyframe : are those frames with specific content, which is therefore created to add new content that does not exist in the movie.
- Normal Frame: these frames usually follow the keyframe, represent no new content and are colored gray.
- Container frame: are not those frames properly, but they occupy a place in the line of time in which you can add one.
- Empty frame : its color is white since they are frames without content.
- Labeled frame: at the top it contains a red band that indicates that it has an associated name.
- Frame with associated actions: at the top it contains an “a” that indicates that it has an associated action.
- Motion animation frames: it is characterized by its purple color and represents the movement with or without effect of a certain object.
- Shapes animation frame : It is characterized by the color green and represents a change in the shape of an object, which goes from the shape it had in the initial keyframe to the final one.
