Week 4

28th August 2014 (Week 4)
Amer Eizwann (0320242)

Introduction to Photography

Exercise 2(c): ISO

Lecture:

Class began with Mr Vinod giving us another quiz to do though the app. 

After the test we talk about our answers during class, I did not know how to explain what is ISO. After the quiz,we had a discussion on shutter speed. We were split in groups for our exercise about ISO. Then, he told us the format and some homework to be done at home.

Mr Vinod asked us to memories the main stops of ISO and shutter. Which are-

Shutter - 1" - 2" - 4; - 8" - 15' - 1/15 - 1/30 - 1/60 - 1/250 till 1/10000

ISO       - 100, 200, 400, 800, 1600, 3200, 6400
-  Other stops are called 1/3 of a stop.

- Every 3 clicks is 1 stop.

Instructions:
2b) Shutter Speed (5%)

Shutter exercise 1: Keep the fan speed at 1 and capture images using shutter settings from 1/1000th of a second till 1’ of a second. Repeat this exercise after changing the fan speed from 1 to 2 and the from 3 to 5 and so on.

Marking Criteria: The student must capture the evidence of the Shutter’s ability to freeze fast moving objects and blur moving objects.

2c) ISO Exercise Instruction

Upon reading, viewing and discussing the material on ISO, we have come to agree that ISO effects exposure (Exercise 2c.1) and effects the quality of an image (Exercise 2c.2).

Your task today, requires you to prove that:
 2c.1

- ISO effects exposure
2c.2

- ISO effects the quality of an image by increasing the noise and grain of a picture.

2c) ISO (5%)

Marking Criteria: The student must capture the evidence of degradation of image as the ISO increases in sensitivity. The student also must produce evidence that ISO can directly affect exposure.

Plan: To use the same aperture, shutter speed and only adjust the ISO. starting from ISO 100 to ISO 6400.

Subject: Stairways.

Results of exercise 2c.1:

1

iso 100, 1/100, f2.8

2

iso 200, 1/100, f2.8

3

iso 400, 1/100, f2.8

4

iso 800, 1/100, f2.8

5

iso 1600, 1/100, f2.8

6

iso 3200, 1/100, f2.8

7

iso 6400, 1/100, f2.8

This proves that  that ISO effect exposure.

Results of exercise 2c.2: 

1

iso 100, 1/3, f5.6

2

iso 200, 1/5, f5.6

3

iso 400, 1/10, f5.6

4

iso 800, 1/20, f5.6

5

iso 1600, 1/40, f5.6

6

iso 3200, 1/80, f5.6

7

iso 6400, 1/160, f5.6

You can start seeing Noise after ISO 1600.

This proves that ISO effects the quality of the picture.

Exercise 2(b): Instructions

Exercise 2b: Shutter Speed.
Keep the fan speed at 1 and capture images using shutter settings from 1/1000th of a second till 1’ of a second. Repeat this exercise after changing the fan speed from 1 to 2 and the from 2 to 3 and so on.

Screen Shot:

Feedback: -

Feedback, week 4 You have copy, pasted info from week 2 to week 4 which is not relevant (general instructions). The work was done in colour when explicit instructions were that it should be done in black and white. I have repeated this more times than I should need to. The work seems to suggest that you have proved the fact that ISO effects exposure and quality of the image. You have also failed to number the pictures posted, again I explicitly mentioned that in class last week and the week before. -- You are not managing your time well as a result a lot of the work seems rushed and last minute and or not on time. Why? It is clear you have prior understanding of photography and therefore you should be able to complete the work with ease, but instead it seems to be the exact opposite. This is costing you marks. Discipline and focus, manage your time effectively. - Mr Vinod.

Reflection:

Experience

While doing the exercise, I was tried to take various angles and shots to fine a subject that would look more interesting while the other students do their exercise.  I completed the exercise in around 15 minutes. Once you understood what to do the exercise when smooth of me. I was still feeling down though cuz i know i didnt do well in my eportfolio and it was sad for me to here the feedback Mr Vinod gave back/

Observation 

It was my first time trying to test out different type of ISO, before this i use to stick with ISO 800 because either im lazy to change it or i forgot too. I never realise that it can effect my pictures a lot. 

Findings

From the ISO exercise, I found out that the ISO does effect how the pictures turn out. Changing the ISO can result to a better photograph. In the future i will always change my ISO depending on where im taking my photographs.