In this blog, I am going to briefly talk about camera lenses.
The first thing I will be going over are the light paths.
Light paths travels through the camera lenses. Affecting the lighting, exposure and white balance. The light path goes directly towards the flip up mirror. In effect the flip up mirror faces upward on a rough 45-60 degrees. Meaning that the light goes upward.
The next section were are going to be talking about are lenses. I will be going over: prime lenses, zoom lenses and cine lenses.
Moving onto prime lenses. Prime lenses can enhance lighting and exposure. Esentially, the lenses are an accessory for a camera but come in different types. One of them being prime lenses. Furthermore, I'm going to explain about MM (which is short for milimeters). MM zooms in and out of the lenses. In addition, presenting field of view and what the eyes see from the lens. The further the MM is, the stricter the picture gets. For a 180 degree = 11mm. To add onto that here's an interesting fact; The human field of view itself is equivelant to 50mm lenses.
Moving onto zoom lenses.
Zoom lenses enchances the zoom a lot more compare to other lenses. To reinforce the statement, they have an adjustable focal length. Much more versatile in comparison to prime lenses where the quick changes are a necessity.
And lastly, we're going to about cine lenses.
Cine lenses are more of an appropriate and professional equipment for recording for an actual cinematic film. Different compare to photography lenses.
Moving onward, I will go state the 4 factors that affect the exposure of a camera and lens.
Shutter Speed, Aperture, Light and ISO/ASA - Sensitivity of the image sensor.
Shutter speeds (on average) range from 1/250-1 When operating the camera with low shutter speeds. The motion of an image becomes blurry.
The less amount of time the shutter speed takes, the blurrier the image becomes. Low shutter speeds cause motion blur.
Aperture (on average) range from f/2.8-f/22. Fast aperture provides the camera-person a lot of light via the lenses. The higher the number, the less light the aperture gives. To do change aperture you can go into settings or you can change it via the dials (which are the wheels on the cameras, there should be 2 or 3 of them)
Lighting comes from the light path from the lenses itself. In most cases, when capturing an image or shooting a film, you'll notice that the camera catches some blue lighting or red lighting. This is what can be called temperature. You can press the WB button on the DSLR cameras and the kelvins direct you from there. They say that 6500 kelvin becomes the whitest natural light. 3000 kelvin or below will capture it in blue sunlight.
ISOs (on average) range from 100-6,400. ISOs change the lighting of the camera itself and is the sensitivity of the image sensor.
White Balance. In terms of processing, WB evacuates unrealistic color casts. Furthermore, when adapting color it changes everything. In most cases, it can be a change of temperature. To the human eye and brain it corrects the color material automatically whereas if you were using a camera, you'd have to change the white balance manually to correct the materials and match the realistic lighting and color.
Kelvins. If you were to under 3000 kelvin the picture will turn in blue although if you were to put the Kelvin up to 6500 it'll match the daylight colours. If you want to find out the specs of a camera or the camera you either used or using: Go to: http://vfxcamdb.com/
Overall, I knew most of these aspects of the camera due to my experience in a level 2 Creative Media course I was on last year. The things I learned however were Kelvins and Lenses. And that all concludes for this blog!
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