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"Exposure
Control" (Bracketing) Assignment Let’s start out by setting the film speed indicator to the manufacturers recommended ISO. In our case this is ISO 400 assuming you purchased a 400 speed black and white film. Find your film speed indicator on the camera and make the adjustment. During the middle of the day (Between the hours of 10 a.m. and 2 p.m.) take daylight pictures of a subject of your choice. Pick a scene with even light. Make all your exposures from the same spot (if you have a tripod you could use it here). Be sure to write down your exposures for every frame! Try and determine an exposure setting (shutter speed and aperture setting) manually by using the light meter. If you’re having trouble interpreting the light meter and your camera has auto-exposure go ahead and use it. Photographers often use a technique called "Bracketing" their exposures as a form of exposure insurance. Bracketing is a deliberate over and under exposure of the film in an attempt to secure the optimum exposure. Once the initial exposure has been made, the photographer might change one or both of the exposure controls (aperture and shutter speed) to insure an ideal exposure. Change your initial exposure setting in increments of one full stop by changing either the shutter speed or the aperture. My suggestion is to use the aperture, if possible, so you don’t run the risk of hand-holding the camera at too slow a shutter speed. You can bracket your exposures in the following sequence: Normal -3 under -2 under -1 under +1 over +2 over +3 over Your normal exposure will be based on the settings your light meter indicated for proper exposure based on film speed and lighting conditions. When you bracket your exposures and change one of the camera controls, you will notice that the metering system is no longer in agreement with your selection. This is normal. Do not adjust. Remember, in bracketing exposures you are deliberately over and under exposing the film. For those of you using auto-exposure, switch the auto exposure compensating dial to 1/8, 1/4, 1/2, 2x, 4x, 8x if possible, to achieve the bracketing sequence. If using auto exposure and you do not have the compensating dial, change the film speed indicator to 3200 (-3 under), 1600 (-2 under), 800 (-1 under), 200 (+1 over), 100 (+2 over) and 50 (+3 over) to achieve the bracketing sequence. If your camera does not have either control available, switch to manual exposure and change the aperture and shutter speeds. Try this bracketing technique from three stops under exposed to three stops overexposed with at least three subjects using daylight conditions. Finish the remainder of the film on various subjects but stay with daylight for this assignment. Use the exposure record to record your bracketed exposures. You do not need to keep a record of the remainder of your exposures unless you want to. (See page 82 in the book for an example of bracketed negatives).
You will use these two rolls for your first development.
Keep track of your exposures like this:
(Note: this is only an example - your results will vary). To Turn In: 5 Images… Normal, +1, +2, -1, -2 After determining the correct exposure and contrast setting while printing the Normal image, the remaining 4 images will be printed at exactly the same settings.
PHOTO 100 - Introduction to Black and White Photography Raymond Elstad: Instructor
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