Lab 5 : Histograms

Histograms

                            High-key scene                

                            Low-key scene

                             Scene with varied tones

a.     According to the histogram, where do most of the pixels in your high key image fall (left or right on the histogram)

Most of the pixels in my high-key image fall on the right side on the histogram, which means the tones are white/bright.

b.     Are there any pixels in the high key image that would not print with detail?

There could be any pixels in the high key that would not print with detail if the white tones start to clip. It means the information is losing.

c.     According to the histogram, where do most of the pixels in your low-key image fall (left or right on the histogram)

Most of the pixels in my low-key image fall on the left side on the histogram, which means the tones are black/dark.

d.     Are there any pixels in the low-key image that would not print with detail?

There could be any pixels in the high key that would not print with detail if the black tones start to clip. It means the information is losing.

e.     According to the histogram, where do most of the pixels in your varied tones image fall (left or right on the histogram)

Most of the pixels in my varied tones image fall in-between the black and white tones, which means it is in the middle tones.

f.      Are there any pixels in the varied tones image that would not print with detail?

There could be any pixels in the varied tones image that would not print with detail if the image is underexposed or overexposed. 

g.     Considering the information on the histogram, do you feel your camera is properly exposing the high key and low-key scenes? Explain your answer

Yes, because it mostly goes either on the right or left side, but the histogram doesn't touch either edges of it. I made sure there was no clipping.

h.     Which histogram shows the most dynamic range?

The histogram that shows the most dynamic range is the one with varied tones. It falls in-between white and black tones. 

Assignment 1 : Creative use of Shutter and Aperture

Shutter:

 Frozen Motion

Blurred Motion

Aperture/DOF:

Shallow DOF

Deep DOF

Lens Depth Distortions

 Wide Angle                                    

18mm

- Camera approx. 1 meter away

- Lockers distorted and stretched

- Subjects' body are distorted and stretched

- Subjects seem bigger than the lockers

 Telephoto

55mm

- Camera approx. 3 meters away

- Distortion eliminated from the subjects and lockers

- The picture became completely flat

- The subjects have become smaller than the lockers

 Wide Angle

18mm

- Camera approx. 1 meter away

- The subject and table are distorted and stretched

- We see a lot of insignificant/irrelevant information in the background

 Telephoto

55mm

- Camera approx. 3 meters away

- The subject and table became flat

- No insignificant information in the background

 The Take Away ( i.e. what you learned from this)
          - what happens to the width of the background when you go from WA to tele?

When we go from WA to tele, the width of the background becomes more tight. We don't see as much information or details than WA.

          - what happens to the distance between the background  & subject "  "  "  " "  "  "?

It makes it as if the subject is close to the wall than WA, everything seems to be far away and distorted. 

          - what happens to the subjects themselves in terms of expansion & contraction (for
            the width) as well as compaction and enlargement (for front to back)?

Everything becomes flat. The distortion and stretching is eliminated.

  Scenario: imagine that you're shooting a model (full body) against a seamless. Your
  framing of the model is what you want but the edges (and beyond) of the seamless are
  visible in your frame. You don't want to move the model back towards the seamless and  
  you don't want to have to retouch out the seamless edges. Applying what you learned
  from this exercise today, what's the solution using just your camera & lens?

I'd put to telephoto (55mm if lens with 15-55mm), and I'd back off until the model fills in the frame of my camera.

Lab 3 : Noise Reduction and WB

Noise Reduction

ISO 100  40mm  f/5.3  1/13sec  Noise Reduction: On

ISO 100  40mm  f/5.3  1/13sec  Noise Reduction: Off

ISO 800  40mm  f/5.3  1/100sec  Noise Reduction: On

ISO 800  40mm  f/5.3  1/100sec  Noise Reduction: Off

ISO 3200  40mm  f/5.3  1/400sec  Noise Reduction: On

ISO 3200  40mm  f/5.3  1/400sec  Noise Reduction: Off

When you turn on the Noise Reduction, you tend to lose details since it gives much more softness to the image. I would only turn it on if I use high ISOs to try to reduce the noises.

White Balance

AWB

The Auto White Balance tries to balances and matches the colours of the environment. It gives a neutral atmosphere.

Shade

The Shade White Balance gives a yellow-ish colour. It gives a much more warm atmosphere.

Fluorescent

The Fluorescent White Balance gives a blue/purple colour. It gives a slight cold atmosphere.

Tungsten

The Tungsten White Balance gives a complete cold atmosphere of the area. It feels like it's freezing indoors even though it's not. The impression makes it more realist since she's also wearing a coat.

Lab 2 : Aperture

Still Life

 

ISO 200  34mm  f/5  1/6sec

The subject is on focus and the background is blurry, which doesn't give us much information of it.

ISO 400  36mm  f/16  0.8sec

The subject is on focus and the background is between blurry and sharp, which gives us enough information of it.

ISO 800  36mm  f/22  0.8sec

The subject is on focus and on the background is sharp, which gives us clear information of it.

The feeling and reading of each image is different with the changes of DOF, the wider the aperture, it helps us focus on a specific element and doesn't make us look anywhere than the subject on focus. The smallest the aperture gives us a much more wider view of the subject and the surrounding. Seeing the elements sharply on the back distracts us from the subject.

Out of all three images, I feel that the first image with the widest aperture is more effective, because we want a specific focus on an element and not too much information from other details of the image.

Portrait

ISO 200  45mm  f/5.6  1/200sec

ISO 800  40mm  f/22  1/60sec

It changes the image when the aperture is wide, because the softness of the background gives a sharp focus of the person in subject than when the aperture is small, we get distracted by the details of the background. The reading of the image only makes us look on the subject with the widest aperture and the smallest aperture makes us look at the subject and then the background for information.

Architecture

ISO 800  28mm  f/18  1/3sec