22.8.14 (Week 3)
Jasmine Yeoh, (0321190)
Introduction to Photography
Exercise 2a: Aperture
Lecture:
The first thing we did today was have a quiz on aperture which we self studied on using the study material Mr Vinod gave us. After the quiz, he gave us a lecture on aperture and explained and clarified our doubts on the topic. He then told us to do an exercise to prove that aperture affects exposure and depth of field.
Instructions
Exercise 2: ExposureThe second exercise is divided into 3 areas (2a. Aperture [2a.1 & 2a.2], 2b. Shutter Speed & 2c. ISO[2c.1 & 2c.2]), all of which directly control the quality of an exposure. This exercises will give the students’ an understanding of how the 3 aspects work in combination to create an exposure.
2a) Aperture (5%)
Marking Criteria: The student must capture the evidence of the Aperture’s influence in exposure using the various f-stops. The student must also capture the evidence of the Aperture’s influence on depth of field.
Exercise 2a.1
Testing if aperture affects exposure. In order to prove this me and my team mates planned to take a picture multiple times and each time, change the aperture at each main f stop while keeping the same shutter speed.
Marking Criteria: The student must capture the evidence of the Aperture’s influence in exposure using the various f-stops. The student must also capture the evidence of the Aperture’s influence on depth of field.
Exercise 2a.1
Testing if aperture affects exposure. In order to prove this me and my team mates planned to take a picture multiple times and each time, change the aperture at each main f stop while keeping the same shutter speed.
f4 // 1/800 // ISO200
f5.6 // 1/800 // ISO200
f8 // 1/800 // ISO200
f11 // 1/800 // ISO200
f16 // 1/800 // ISO200
f22 // 1/800 // ISO200
Exercise 2a.2
Testing if aperture affects depth of field. For this test I took a picture of a ruler several times, each time changing the aperture at each main f stop as well as adjusting the shutter speed. I used a ruler because it is easier to see where in the picture becomes less clear.
f4.0 // 1/13 // ISO200
f5.6 // 1/6 // ISO200
f8 // 0"3 // ISO200
f11 // 0"6 // ISO200
f16 // 1"3 // ISO200
f22 // 2"5 // ISO200
Screenshot:
Feedback
"With regard to the work you posted on your ePortfolio (under instruction) the title states just Exercise 2a, but which is it? Proving depth of field or exposure? You need to mention : Exercise 2a.1 or Exercise 2a.1: Exposure. The images with the ruler, I assume are to prove aperture controls depth of field, it would seem that you have proved that with your exercise, while the next set of images seem to indicate that aperture controls and effects exposure, again here it would seem that the exercise has proved it. Good work with regard to the exercise!!!
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With regard to the eportfolio you forgot to the Exercise type (Exercise 2a: Aperture). Armored importantly, the findings, of your reflection were a little "light" lacked proper reflection or insight, I know you can do better and I hope to see this in the next ePortfolio entry. In your observation you did not mention any observations you made with regard to the exercise, that was important. Alright, this should be sufficient feedback for you to mull over. Good work on the exercise, more work/concentration required in listening to instructions and in writing your reflections."
Reflection
Experience
Doing the test on the Sacrotes App was new and a fun way to mix things up. I really liked doing the practical work where we had to go and take pictures to prove that aperture affects exposure and depth of field.
Observation
I noticed that Mr Vinod goes off topic easily but I don't mind it and rather, I find that the things he talks about when he goes off topic is interesting and entertaining. It is also quite informative and its good to have extra information since knowledge is important when you are in the design world because you need to know what you are talking about.
Findings
I didn't understand how to set the appropriate shutter speed before the class but Mr Vinod showed us the meter which you can see through the viewfinder when you press the shutter button half way.
