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Replicating "multiple exposures" in photoshop
I own a Canon 300D, which will not allow me to take multiple exposures,
and a Canon T2 which does do multiples. I do digital as well as regular film work. I find the digital camera helps me with my film shots by giving me some insight into how certain experimental shots will turn out. I avoid having to waste film, paper, and chemicals by "previewing" my shots digitally. Anyway, I am experimenting with multiple exposures and I'd like to be able to do my initial experimentation with my digital camera and then convert the results over to film for my final shots. What I would like to know is how I can take 2 seperate images and in photoshop convert them to a single image that will represent approx. what I would get by taking the the shots on my film camera. I'm thinking that putting both image as a layer and then setting one layer to "lighten" or "screen" may do the trick, but I'm not sure of the blending modes that would be correct for me to convert f-stops. Example of what I am thinking: image A taken digitally at f8/250 image B taken digitally at f11/125 to see what this image would approximate taken with film (multiple exposure) photoshop: I have 3 layers --black base layer --image A (Burn 50%) --image B (Burn 50%) This would give me a rough idea of the image I would get on film if I exposed A at f8/125 and B at f11/60 (half the time each of the originals). I'm not sure if I need to use burn, lighten or screen or something else. or if this way of calculating would even be correct. Can any photoshop guru's out there help me on this? |
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#4
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When I take the shot on my film camera, they will be half exposure
each. Otherwise the photo will come out over-exposed. (remember I'm doing multiple exposures) - Unless I compensate on the original shots. But for the example assume I take the 2 individual photo's at 100% correct exposures. I'm not sure normal blending will work as I've done a few tests already and the image comes out quite a bit flatter than the film shot. I want to replicate (in photoshop) the light reacting to the film in my camera, not just have the image look good on screen - as my final shot will be done completely with film. |
#5
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When I take the shot on my film camera, they will be half exposure
each. Otherwise the photo will come out over-exposed. (remember I'm doing multiple exposures) - Unless I compensate on the original shots. But for the example assume I take the 2 individual photo's at 100% correct exposures. I'm not sure normal blending will work as I've done a few tests already and the image comes out quite a bit flatter than the film shot. I want to replicate (in photoshop) the light reacting to the film in my camera, not just have the image look good on screen - as my final shot will be done completely with film. |
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#10
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Ah, I see. ok, but what about layering order though? I'm noticing
when I have one layer over the other both blended 50%/50%, the top layer is dominant - this is why I was thinking lighten instead of normal... as the effects seem to be the same regardless of layer order... I'm not sure yet about the way lighten blends color though. |
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