Question

What do f-stops and shutter speeds do and how do they impact a photograph? Determine the proper f-stops and shutter speeds that you would use for the following photographs and briefly explain why you chose each setting for each image
Image #1: An outdoor photo with bright, natural light
Image #2: An evening photo with low light
Image #3: Indoor photo with medium light

Answer 1

The f-stops and the shutter speed allow to control the intensity of the light that reaches the sensors,

The answers for each case are:

   a) fast speed and large f-stop

   b) slow speed and small f-stopr

    c) intermediate speed and average f-stop

given parameter

     a) photography in bright light

     b) night photography, low light

     c) interior photography, half light

to find

     * f-stop

     * shutter speed

In photography, the intensity that reaches the sensors is proportional to the aperture of the diaphragm and the shutter speed, the quality and sharpness of an image is directly related to the intensity received.

• The f-stop is defined by the relation

         N = f/# = f / D

where N or f/# is de f-stop, f is the focal length and D the diameter of the lens opening.

The amount of light that reaches the film has two dependencies:

* Proportional to the lens area, which varies with the  diameter  square

* Proportional to the image area, if we assume that the object is at a much greater distance than the focal length, the image distance is equal to the focal length, therefore the further away the sensors are the lower the intensity.

  We can say that the intensity is inversely proportional to the focal length squared

From these two expressions, it turns out that the intensity is

         

          I = (D / f) ² = $\frac{1}{N^2}$

• The shutter speed is inversely proportional to the time the shutter is open for the sensors to check the light, it is expressed in seconds and fractions.     I = t = 1/v

where  t time and v es shutter speeid

In summary, the intensity received by the sensors is inversely proportional to the f/# and the shutter speed

 

Let's apply to the proposed situations

a) Photo outdoors in bright natural light.

In this case, as there is enough light, we can use a large one, so that a little amount of light passes through and also use a short shutter speed

decrease the f-stop so that the less light the system and that the photograph is not overexposed.   This gives us an advantage, by having a diagram with a small aperture, the rays that pass are para-axial, therefore the background will be seen clearly.

Typical values ​​for this situation are fast speed ( s or less) and f-stop of f/8

b) night photography in low light

in this case the shutter must be opened, for this decrease the f-stop so that the more light the system

In addition, the shutter speed must be reduced so that there is more time for the exposure of light

Typical values ​​are speed of s or less and f-stop of f / 1.6 or less

in this case the background of the photograph becomes blurred

c) indoor photography with half light.

In this case, a medium speed and a medium shutter aperture must be selected with f-stop.

In this case the object of interest is exposed and part of the phone is lost

The typical values ​​of shutter speed are s or s and the aperture of the diagram to achieve a good exposure, the most types  f-stop are f/2.8 or f/4

With the f-stop control and the shutter speed, we can control the intensity of the light that reaches the camera's sensors for a good photo.

learn more about f-stop and shutter speed here: brainly.com/question/14307343