In digital photography, exposure is the unit of measurement for the total amount of light permitted to reach the electronic sensor during the process of taking a photograph. The two main controls our digital camera uses to control exposure are the shutter speed and aperture.
I think of a perfect exposure as an equilateral triangle – all the angles are equal, all the sides are equal. Now if I change just one part of that exposure or triangle, it is no longer equilateral or perfect so I will need to change another point of the exposure or triangle an equal but opposite amount to make that triangle and therefore the exposure is perfect again.
We had a session for aperture with Becky, where we had some time to play with aperture and 70 – 200 mm lens. I used a 50mm lens to take both the images. The first image (the one on the left) is with shallow depth of field and the second is with a wide depth of field. I felt really hard figuring out to the wide depth of field, that is why the image is quite blurry.
This gave me a basic understanding of the importance of the exposure triangle, aperture and depth of field
Subject and Sequence 