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Assignment - Bracketing and ISO


Part 1 - Bracketing
Light Meter at 0
1/60  7.1  ISO 400
















Light Meter at -1
1/60  10  ISO 400
















Light Meter at +1
1/60  5.0  ISO 400
















Question: What is bracketing and what settings did you manipulate on your camera, by what increments (in stops) in order to achieve it?

Bracketing is when you take three separate photos at three different light exposures. The first photo is the normal one with the light meter set to 0. For the second photo the only setting I had to alter was the aperture. I went one full stop higher (from 7.1 to 10) to achieve a light meter reading of -1. For the third photo I, again, only altered the aperture. I moved it down 2 full stops (from 10 to 5.0) in order to achieve a light reading of +1.

Part 2A - ISO
High ISO
1/250  18  ISO 6400
















Low ISO
1/60  5.0  ISO 100
















Medium ISO
1/80  7.1  ISO 400
















Question: What was the effect on your other exposure settings when you changed the ISO?

I had to drastically change my other exposure settings when I went to the extremes of ISO. For example, in my high ISO (meant for low light), I went to a faster shutter speed (1/250) in order to compensate for the ISO of 6400. I also went to a very high aperture of 18 in order to set the light meter to 0. In my low ISO (meant for high light), I went to the lowest possible shutter speed (given that I was using my camera in a hand-held way) and a very low aperture of 5.0. This is in order to compensate for the low ISO. Within the medium ISO setting, I altered the shutter speed and aperture to average settings in order to achieve a light meter reading of 0.

Part 2B - ISO
High Light Scene
1/125  18  ISO 100
















Medium Light Scene
1/60  4.0  ISO 800
















Low Light Scene
1/60  3.5  ISO 6400
















Question: Explain which ISO setting worked best in which lighting situation and why.

In the first photo (high light), I used the lowest possible ISO in order to keep the light meter at 0. It was a very bright and sunny day so many of my setting were altered in order to keep the photo from being over-exposed. In the second photo, I used an average ISO of 800. It was indoors around midday but not in direct sunlight so I kept the ISO at a high average. For the final photo, I used the highest possible ISO of 6400 in order to keep the light exposure meter at 0. This photo was taken in the evening with only the string lights used as lighting.

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