Sony PMW350 Cache Recording Ep.14

Поділитися
Вставка
  • Опубліковано 19 жов 2024

КОМЕНТАРІ • 8

  • @alyanni
    @alyanni 7 років тому

    Thanks for this "tutorials!" awsome
    Any chance to make switchers tutos??
    thanks a lot

    • @alyanni
      @alyanni 7 років тому

      Thanks for your answer; I don`t looking for any particular switcher. Could be cool a MCS 8M or something bigger, whatever you could get access,it'll be ok.
      Greetings

    • @ARUNKADAKKAL
      @ARUNKADAKKAL 7 років тому

      Cam reset?

  • @alyanni
    @alyanni 7 років тому

    Hi again
    excuse me
    there is an issue which confuses me since a while.
    What's the difference between the (high frame rate)HFR, and the clasic (front switch) Electronic Shuther Speed???
    I do know that if you set on the Electronic Shutter you increase the speed but you loose brightness on the image; in other hand, the modern HFR is setting up from a menu, selecting the frequency of frames (from 1 to 120 e.g.)
    Can you send me a web link or something in order to clarify the difference???
    thanks a lot

    • @alyanni
      @alyanni 7 років тому

      jesse miller ok ok👍
      My doubt is: it is still logical to include the classic shutter, when is already available a better solution (HFR)???? Or there are any chance to use the Electronic Shutter???
      sorry I'm lost
      thanks very much indeed
      PS 1/250 1/500 1/1000 are frame speed for seconds in Electronic Shutter??

    • @weeardguy
      @weeardguy 3 роки тому +1

      I know it's a long time ago, but maybe it still helps someone out: a high-frame rate setting makes for smooth slow-motions as the camera takes (let's say) 5 times as much frames as in normal recording mode. When in playback, the camera will usually refer to its normal playback speed of (I'm European) let's say 50 frames per second. That's 5 times as slow, so the motion is slowed down. (this is called overcranking from the time moving image was shot on film which had to be rotated to be exposed: by rotating (cranking) it twice as fast but playing it back at normal speed, things would be slowed down.
      The other side is undercranking: deliberately slowing the film down (let's say 12 frames per second at a 24 frame per second playback rate) while playing it back normal: this will make everything speed up. This was a cheap effect to play with speed: by having everyone on set act slower (a 5-time difference is a rather extreme example) except for the main character, the main character could run like he or she had superpowers. (there are good examples on UA-cam for both effects)
      As cameras are far more powerful than back in the days, this is now all fully automatic with settings that don't require you to do anything more (that is, of course when you don't want your actors to do something special)
      The shutter-speed however is more for stills: if you'd take a close-up of someone kicking a ball in football, and you want to stop it at the point he almost hits the ball, at 1/50 of a second, the leg of the footballplayer will be blurred, especially his foot which moves the fastest.
      Now, when you up the shutter speed to like something 1/250th of a second (or whatever is closest) you'll get a far sharper image when you take a still. This ofcourse, also requires more light and thus usually an iris that is more open or higher gain.
      This is the same as in photography: if you want to capture a lightning bolt during a thunderstorm, 1/250th of a second won't help you or you should be extremely lucky to catch a bolt.
      Now release the shutter for something like 3 seconds and you already stand a far better chance of capturing a bolt.
      The downside to high shutterspeeds is that it affects EVERY frame. If you take the same game of football but now shot wide, with the same player kicking the ball across the field, the standard shutter-speed will usually work out fine: the ball will blur, but that's no issue, you can see it moving.
      With a high shutter speed however, the ball can be looking to have a jittery motion, as it will appear sharp in every single frame, as the frame itself is exposed for a very short time.
      In short: Electronic shutter does not create a slow-motion effect, it only affects the exposure-time of each frame, while high-frame-rate settings create slow-motion effects.
      The framerate is connected though to the shutterspeed (because you can't expose a frame longer than it lasts in time): usually, the shutterspeed is always double the framerate. For 50 frames a second, the shutterspeed therefor automatically becomes 1/100th of a second. This is also explained in degrees: the example above translates to a 180 degree angle.

    • @alyanni
      @alyanni 3 роки тому

      @@weeardguy thanks very much for your time

    • @weeardguy
      @weeardguy 3 роки тому

      @@alyanni You're welcome ;)