Fall & Spring Semesters. 1  Undergraduate students must be enrolled in at least 12 credit hours to be considered full time and enrolled in at least nine hours in order to be three-quarter time. 2  Enrollment in six to eight hours is considered half time and enrollment in five or fewer hours is considered less than half time.
Yep you've got the abbreviations right. Av = aperture value = aperture priority auto exposure Tv = time value = shutter priority auto exposure Both of these modes allows you to set a firm value for either aperture or shutter speed, and let the camera work out the exposure needed.
Consider a Tv displaying a scene, the viewport is simply the area of the scene that is captured by the camera. Another way of thinking about it is the way some cameraman hold up their thumbs and index fingers to 'frame' a scene, or hold up a hollow picture frame, the light that passes through that frame is the viewport. For a visual example, consider this gif, the green rectangle is the viewport: share | improve this answer.