I am into the fourth week of the course after viewing my second set of video tutorials from Michael Freeman’s Perfect Exposure Masterclass on MyPhotoSchool. The highlight of this session were two things – Histogram and Key Tones.
For the first time, I have deliberately and consciously clicked the images keeping the Histogram in mind. We were told to try and predict in our mind’s eye what the shape and extent of the histogram will look like. I am slowly understanding this, but still need to put in my efforts consciously to anticipate the results correctly.
There are three camera settings that each control the brightness of the image you capture—aperture, shutter speed and ISO—and this lets you choose a combination to get any particular exposure, hence the expression exposure triangle. Using it efficiently means knowing clearly what your priorities are for any shot. Apart from controlling the light, the aperture and shutter speed each do another job for the image. Aperture affects depth of field while shutter speed affects motion blur, and you may want less or more of either in any specific shooting situation. ISO raises the sensitivity when you need it, but the result is noise, which has no redeeming qualities, so this just increases the compromises you need to make when light levels are low..
Key Tones are one of the most important principle of Exposure. Nearly always there’s one, maybe two areas of the scene that you’ve framed that absolutely need to be at a particular level of brightness.
By framing everything just as we are expecting our eyes to treat , we would be exercising a Mid Tone. But in that case, there would not be any drama and the scene you are looking to convey would not do that.
I went on to read further and here are some of the links that can guide you further
Assignment 2.1: Using and Predicting the Histogram
Photograph three scenes that are in some way extreme for the histogram: one could be with a significant area of a pure colour, another with a prominent and sharp difference in brightness.
For this exercise , I have chosen 3 images that are quite apart from each other.
Set of white soup mugs stacked on a white background. The histogram for this image had peaks on the extreme right.
The third chosen image has got plums stacked in a glass bowl. The peaks for this image in the histogram are steeping towards the left since there is a single dark color tone chosen.
As I previously mentioned, I am slowly learning to understand the trends in a histogram. But tracking the peaks with the image will come with gradual conscious practice.
Assignment 2.2: Your Personal Taste (1 Image)
Photograph a subject or scene which from the start, before shooting, you have decided should be significantly darker or lighter than average.