Photography Tip Film Camera Tests Needed To Be Performed
Buy two cheap rolls of thirty-six exposure negative. The first test is called the scratch test. Load one of the rolls into the camera gate, and continually expose the negative until the roll of film has run out. Make sure that the film advances per each exposure. Rewind the negative and make sure you do not wind the end of the negative back into the film canister. Take a magnify glass and inspect the negative for scratches. If the negative is free of scratches wonderful, if it is not the camera will need to be repaired by a camera repair specialist. Since most cameras come with a 50mm lens I recommend using a 50mm lens for the next test. The next test will evaluate several things. Focus calibration, exposure, and check for any light leaks. You will need to purchase a lens calibration chart such as lens-align 2. Click on the following link to purchase lens align 2 Lens Align 2. You will need an additional tripod to mount the lens calibration chart on. Load the second roll of 36 exposure film and close the camera door. Place your camera on a tripod, and place the lens align 2 calibration chart on a second tripod four feet away. Set your cameras aperture to the widest aperture usually a F-Stop of 2.8 will do. Make sure your camera is set to manual mode. Focus your lens to the large square target on the left. Take a light reading with a light meter, and set the appropriate shutter speed for normal exposure. Take several exposures. Take three exposures. Rewind the negative and take to the lab for processing. If you see curtains of streaks across the prints then you have a light leak and your camera needs to be refoamed by a camera repair specialist. The target should be in sharp focus with the zero mark part of the angled chart on the right side in sharp focus. If the focus is sharp in front of the zero mark or if the focus is sharp behind the zero mark on the chart then your lens will need to be calibrated to your camera body by a lens repair professional.