| Photo 101 | |
| Photography terms you should know. aperture - size of the lens opening, controlled by the f-stop. The Holga has two f-stops, although they are fairly close in size. depth-of-field - The area of a photograph that is in focus, which is determined by by the f-stop. The smaller the f-stop, the more of the photo will appear to be in focus. Conversely, the larger the f-stop, the less of the photo will appear to be in focus. Also, longer lenses have a shallower depth-of-field while wider lenses a wider one. film speed - The sensitivity to light of a given film, measured as ISO. The higher the ISO, the more sensitive the film is to light. medium format - The Holga uses 120 size film which is also called medium format. Large format is 4x5 and larger while small format is 35mm or smaller. shutter - The mechanical device (in the case of the Holga) that opens the lens, exposing the film to light. The shutter is controlled by a shutter release. vignetting - The gradual darkening towards the edges of a photograph (or drawing). The poor quality Holga lens with its light falloff causes this to occur. | MORE HOLGA INFO: » Taping the Holga » Other modifications » Adding color » FAQs |