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#1
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Cocktail Photo
Advance comment: How to make a photograph of a cocktail in which the
only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... |
#2
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Cocktail Photo
On 2012-06-11 18:53 , Chemiker wrote:
Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) -- "Civilization is the limitless multiplication of unnecessary necessities." -Samuel Clemens. |
#3
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Cocktail Photo
On Mon, 11 Jun 2012 19:23:15 -0400, Alan Browne
wrote: On 2012-06-11 18:53 , Chemiker wrote: Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) Congratulations, Alan. I knew someone would sniff it out. Alex |
#4
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Cocktail Photo
On Mon, 11 Jun 2012 18:39:17 -0500, Chemiker
wrote: On Mon, 11 Jun 2012 19:23:15 -0400, Alan Browne wrote: On 2012-06-11 18:53 , Chemiker wrote: Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) Congratulations, Alan. I knew someone would sniff it out. It's true. Alan is wicked smart. |
#5
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Cocktail Photo
On 2012-06-11 19:39 , Chemiker wrote:
On Mon, 11 Jun 2012 19:23:15 -0400, Alan Browne wrote: On 2012-06-11 18:53 , Chemiker wrote: Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) Congratulations, Alan. I knew someone would sniff it out. I learned about it while reading about the "making of" some movie (possibly K-19) some years ago. It's an effect I've wanted to try but I don't have a UV light and it's very low on my list. -- "Civilization is the limitless multiplication of unnecessary necessities." -Samuel Clemens. |
#6
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Cocktail Photo
On 2012-06-12 09:01 , Bowser wrote:
On Mon, 11 Jun 2012 18:39:17 -0500, Chemiker wrote: On Mon, 11 Jun 2012 19:23:15 -0400, Alan Browne wrote: On 2012-06-11 18:53 , Chemiker wrote: Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) Congratulations, Alan. I knew someone would sniff it out. It's true. Alan is wicked smart. It's true that I'm wicked smart, but it's also true I read about that trick a few years ago in the "making of" of a movie. That's just memory (which is a finicky thing...) and now reading up on it again, the secret is quinine (an ingredient in tonic water) which reacts to UV by glowing blue. Apparently today's tonic water's do not contain the same amount of quinine as original tonic waters which were part of a strategy to prevent (moderate? treat?) malaria. -- "Civilization is the limitless multiplication of unnecessary necessities." -Samuel Clemens. |
#7
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Cocktail Photo
Alan Browne wrote,on my timestamp of 13/06/2012 7:03 AM:
Apparently today's tonic water's do not contain the same amount of quinine as original tonic waters which were part of a strategy to prevent (moderate? treat?) malaria. They wouldn't be called "tonic water" if they didn't have the quinine. And they are still used for that purpose in places where malaria is widespread. |
#8
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Cocktail Photo
On Tue, 12 Jun 2012 16:59:35 -0400, Alan Browne
wrote: On 2012-06-11 19:39 , Chemiker wrote: On Mon, 11 Jun 2012 19:23:15 -0400, Alan Browne wrote: On 2012-06-11 18:53 , Chemiker wrote: Advance comment: How to make a photograph of a cocktail in which the only source of illumination is the cocktail itself, which is *not* naturally a light source. A few solutions come to mind. This one will be explained after the comments begin, if no one figures it out. I suspect some, if not all, in this group will figure it out before then..... Alex, who doesn't mind sharing tips. No this was not an ad for Bombay..... If you're referring to your SI shot then this posting should have been pre-fixed: [SI] Food - etc. I see stray bits of white light in there, so I assumed there was a tight light beam above. Making that "glow" can be accomplished with UV light and tonic water (simulates Cherenkov radiation look - used in movies.) Congratulations, Alan. I knew someone would sniff it out. I learned about it while reading about the "making of" some movie (possibly K-19) some years ago. It's an effect I've wanted to try but I don't have a UV light and it's very low on my list. Actually, there are literally thousands of materials that exhibit this property, notably a class called "flavones". FE: Riboflavin (the vitamin) glows yellow-green. Some laundry soaps with brighteners will glow an intense white. For forensic microchemistry, this technique is just about indispensible..... i.e. Thin-layer chromatography, with UV visualization. It's also a neat test to see how effective your UV filters *really* are. I guess I need something that will focus a spot, from, say, 4 inches down to 1 inch. I don't know much about lighting systems, but I'm thinking maybe a Bower or Flashpoint with a snoot would work. I just don't know. My lightstands with umbrellas are way too broad in coverage, as is bare flood. My other shortcoming is lack of a point-light (like a halogen bare bulb) for real macro work. I have 10 portable flashes, and none do this well. Vivitar 252, 283, Nikon SB-20, SB-28DX and SB-700. Well, “Ah, but a man's reach should exceed his grasp, or what's a heaven for?”, Browning said. It gives me something to work toward. Alex |
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