brian_utley Posted June 26, 2004 Share Posted June 26, 2004 I am wanting to experiment with multiple exposures. If I have a scene that would require a 1/60 at f4, would I shoot each of the two exposures at 1/30 f4 so the two exposures together would get me a proper exposure? Link to comment Share on other sites More sharing options...
jimvanson Posted June 26, 2004 Share Posted June 26, 2004 Close Brian -- If you require 1/60 you would require 2 exposures of 1/125 for a total of 2/125's which equals 1/60. Link to comment Share on other sites More sharing options...
brian_utley Posted June 26, 2004 Author Share Posted June 26, 2004 ah yes, I had that flipped. thanks! i guess the trick is, with myself in both exposures, each location that I am at, I will underexposed at each location by 1 stop. correct? Link to comment Share on other sites More sharing options...
jimvanson Posted June 26, 2004 Share Posted June 26, 2004 Yes Sir! Link to comment Share on other sites More sharing options...
lex_jenkins Posted June 26, 2004 Share Posted June 26, 2004 Depends on the situation. For example, take a look at the attached photo of a ridiculously large full moon over our lakefront. It's faked. Oh, sure, the full moon was out that night. But it was higher in the sky and at a different location. First I slapped on a telephoto lens, carefully aligned the moon toward the upper right corner and exposed "normally" (which, for the moon, usually means 1/30-1/60 @ f/11-f/16). Then, with the double exposure lever on my Nikon F3HP engaged, I recocked the shutter, put on a wide angle lens, turned the camera toward the right and recomposed so the full moon would appear to be just over the trees at mid-right. I relied on the F3's auto exposure mode to do the rest - it's surprisingly accurate for long duration nighttime exposures. (Note the star trails, while the moon itself has no "trail".) So, in most situations, sure, you'd cut each exposure in half for a double exposure to be properly exposed. But not always.<div></div> Link to comment Share on other sites More sharing options...
lex_jenkins Posted June 26, 2004 Share Posted June 26, 2004 And here's a less successful variation on the same trick. This time I overexposed the moon so there's no detail. But the dock and everything else looks good. To fix it I suppose I could Photoshop in the better moon from the other shot, but I was hoping to produce a series of successful double exposures the old fashioned way, each on a single slide.<div></div> Link to comment Share on other sites More sharing options...
mo_zhang Posted June 26, 2004 Share Posted June 26, 2004 unless the background of the two positions you will be posing in are completely black, you will come out transparent. Link to comment Share on other sites More sharing options...
James G. Dainis Posted June 26, 2004 Share Posted June 26, 2004 And if the backgrounds are completely black, then you would take both exposures at 1/60,f4. James G. Dainis Link to comment Share on other sites More sharing options...
j_smith6 Posted June 27, 2004 Share Posted June 27, 2004 If you want to make phto with multi exposures- = when you are exposure 2 times you must reduce everything for 1 diphram = when you are exposure 3 times you must reduce everything for 1.5 diphram = when you are exposure 4 times you must reduce everything for 2 diphram. Link to comment Share on other sites More sharing options...
j_smith6 Posted June 27, 2004 Share Posted June 27, 2004 If you want to make phto with multi exposures- = when you are exposure 2 times you must reduce everything for 1 diphram = when you are exposure 3 times you must reduce everything for 1.5 diphram = when you are exposure 4 times you must reduce everything for 2 diphram. Link to comment Share on other sites More sharing options...
imaginator Posted June 27, 2004 Share Posted June 27, 2004 This is the Film and Processing Forum... isn't it? Link to comment Share on other sites More sharing options...
ronald_moravec1 Posted June 27, 2004 Share Posted June 27, 2004 If the exposures overlap on the frame, underexpose each 1 stop. The the secondary one is in a blank area, give two normal exposures. Link to comment Share on other sites More sharing options...
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