Lomo double image

Out of context: Reply #2

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  • timajick0

    this is a basic double exposure question, the answer applies to all camera shooting negative film, lomo or other wise.
    It has to do with the limited amout of density any piece of film is capable of recording.
    When an image is taken with the camera the light reflected to the film plane produces a build up of designity. the more light, the more density, E.I. a photograph of a red ball on a black background will only build up desnsity when the red ball is, as no light is refelected from the black area. If you then shoot another exposure of a medium reflected light scene, like a grey ball or something, the ball will have more film area to exposre on and be more prominent in the final shot. And vis-versa, a red ball photographed against a white background, the white will build up alot of density, probably using up 100% of the available density of the film. If you try to shoot a grey ball..or anything really, after this frame, there will be no avaialbe density for the light to expose to, you'll just get an image of a white wall. In oder to double expose an image well there needs to be density vailable for the light to build up on, so if you shoot your first exposre of a white wall, you will get nothing, or not much, of an image impression from your second exposre. And if you shoot your first shot on a black wall or scene, you will have lots of density left over for your second exposure, creating a more interesting "double expose" type image.
    So to answer your question, the image that produces the most density on the film is the one that appears more dominent in the end, no matter wether it was shot first or second. The best thing to do is meter the shot you want to take, then cut the exposure in half, this leave plenty of availble material on the film for your next exposure which you should also cut the settings in half for.
    God thats a long response.

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