With film motion picture cameras, the film has to be advanced between frames. The shutter is closed while the film advances. It them opens for a time to expose the frame, and then closes to advance the film again. (EDIT -- Source = wikipedia)Inwicta said:
Sorry forgot the quote^^berkeman said:With film motion picture cameras, the film has to be advanced between frames. The shutter is closed while the film advances. It them opens for a time to expose the frame, and then closes to advance the film again. (EDIT -- Source = wikipedia)
The simplest cameras would open the shutter for about half of the frame time, and close it for the other half to advance the film. More advanced cameras may have more control over the shutter opening time.
Are you asking more about film cameras, or solid-state cameras?
berkeman said:Are you asking more about film cameras, or solid-state cameras?
That's a solid state digital camera. It doesn't use a film. The exposure time can vary, for example depend on the amount of available light.Inwicta said:
Inwicta said:
A.T. said:
A.T. said:
You are confusing frame rate with shutter speed:davenn said:
hmmmm .. ok, appears that I have been lead astray againA.T. said:
DNote that not every camera gives you direct control of shutter speed in video mode. But you can easily see, that the full frame duration is not always used for exposure: Film a very fast object (which smears out) and overlay two subsequent frames: The combined smear of two frames usually has a gap, indicating the time of non exposure.davenn said:hmmmm .. ok, appears that I have been lead astray again
I took a video with 30 fps and thank youdavenn said:
Inwicta said:
Here is what a fast spinning propeller can look like in two consecutive frames of a video overlaid. Note that the smeared green & red markings are on one blade only, so the two green arcs represent the same object, in two consecutive frames:Inwicta said:
I see thanks for the pictures for clearification! (Im visual person) and i think my gopro doesn't use any kind of flashes etc.A.T. said:Here is what a fast spinning propeller can look like in two consecutive frames of a video:
As you see the exposure time (time captured in each picture) is not the full frame duration (1/30s), but only about 75% of it. This fraction can vary, depending on what the camera chooses based on available light or your manual settings.
A 30 fps (frames per second) camera is capable of capturing and recording 30 individual frames per second, resulting in a smoother and more fluid video playback compared to lower fps cameras.
The higher the frame rate, the more individual frames are captured and recorded per second, resulting in a smoother and more detailed video quality. However, a higher frame rate also requires more storage space and processing power.
Yes, it is possible to convert a video from 30 fps to a lower frame rate. However, the quality of the video may be affected and there may be noticeable differences in the smoothness and fluidity of the video playback.
A 30 fps camera is suitable for most types of videos, such as live events, vlogs, and documentaries. However, for fast-paced and action-packed videos, a higher frame rate camera (60 fps or higher) may be more suitable to capture all the details and movements accurately.
The higher the frame rate, the more frames are captured per second, resulting in a smoother and more detailed slow motion video. A 30 fps camera may not be suitable for slow motion videos as it may not capture enough frames to create a smooth and fluid slow motion effect. A higher frame rate camera (120 fps or higher) is recommended for slow motion videos.
