Latitude
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This document provides instructions for an photography assignment exploring latitude and exposure. Students are asked to take portrait photos of models using different lighting styles at varying exposure levels from under to over exposure. They will present the photos in their journal under the heading "Latitude" explaining when images are under or over exposed, how detail is retained, and identifying the limit of acceptable exposure. An extension asks students to research dynamic range and take photos requiring broad or little dynamic range.
Latitude
- 1. City College Norwich AS Photography Portrait Lighting Latitude The acceptable limits of things such as focusing, exposure and development. A degree by which exposure can be varied and still produce an acceptable image. Your task today is to explore latitude and in particular latitude exposure. Have your camera set to AV with an ISO somewhere between 100 and 400 (Do Not Use Auto ISO!!) and use a tripod. Today you will be paying attention to your camerasin-built light meter as well as purposefully ignoring it. Work in groups taking it in turns to be the model and Photographer. Firstly have the model sit (or stand) with light on just one side of their face (what is this type of lighting called?). Set the camera aperture to the lowest F-stop available and take a picture using what the camera says is the correct exposure. Now locate the exposure symbol on your camera which should look something like this → Hold the exposure button down and turn the selector dial so that you start to under expose the image (go into minus numbers on your cameras display). Take another image at minus one on your cameras light meter. Repeat this for minus 1.5, minus 2….. until you have achieved an unacceptable Latitude. Do the same with overexposure. Now you have tried out Latitude with strong side lighting try this out with the other types of portrait lighting you experimented with yesterday. Present your images in your journal, alongside your portrait lighting photographs, under the heading ‘Latitude’ and explain when your images are under or over exposed and how you can still retain some detail. Highlight what image you think is at the limit of acceptability for both under and over exposure. Have fun and get creative Extension: Research and explore Dynamic Range in photographic image making. Find or create a scene that requires a broad dynamic range in order to retain maximum detail and one that requires very little.