Monday, January 20, 2014

Homework assignment # 1

Understanding resolution for video
Resolution = the amount of detail an image holds
Pixels = an actual unit of digital image
- You can change resolution can change at will 
- HD = 1080 HD & 720 HD - only two resolutions (big deal) 
- Rule of thumb: you can't crop video, so don't do it

Choosing a video frame rate
- Video today is usually filmed at 30 frames per second - keep things simple (so smooth)
- Think of video as a lot of little still photos moving together
- film was originally 24 frames per second - our eyes are used to this
          - the contrast between 24 frames per second and 30 frames per second is enough for our brains to register the difference between film/digital video because our brain is used to associating that look with the original film look
- 60 frames is like slow mo? And can be used for sports movements - good stuff

Understanding the challenge of shutter speed
- Overarching theme: shutter speed is different from video to still photo
- High shutter speed -> good for still frames (think freeze frame)
           - good for detail -> chattery (not smooth)
- 1/125 can work in video if the action is not too fast or complicated 
- The higher the shutter speed, the less normal/ more unusual your video will look

Getting the right exposure
- Manuel exposure is usually pretty good - auto exposure is annoying
- Look for blinking when checking for the correct exposure
- Use a histogram and check f-stops
- ISOs - capture quality video easily from 100 to 400 and even 800


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