Archived posting to the Leica Users Group, 2007/01/07
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I notice the magenta glow in the candle wax... but I also notice the color of the wall behind as being different..... Is this also a white balance issue we are seeing? Anyone have a MacBeth Color chart to use to separate out the WB? The candle flame is different than we have seen before. It does look a bit off sharp focus, seemingly in back of the flame as the picture frame looks sharper,; it does have a wonderful pen-umbra ( or whatever you call the stuff around a point light source that gives it a halo like effect); and it does not show off color. It is definitely not a technical shot of the flame in clear sharp focus. The bottom of the flame shows blue, as you would expect and the flame itself is clean in color. Personally, I do not see a color shift in the flame at all, nor a roundish ball of light , as Tina's first pictures indicated. I do see a flame that is dreamy... which I like, but I think is the purpose of the exercise.... is it IR/sensor related or something else.... I think that focus is till not counted out. Brian, can the results be repeated with the flame NOT in focus at all and then again in really tight focus? Make the focal plane behind the flame by a few feet ( as in Tina's picture). Then again with the focus getting progressively closer to the flame. Second... do you have a 486 filter ( no not the uP, the glass type...)? Third... was the WB held constant? #4.. what about flare? Is this also a component? ( I got to thinking about he pen-umbra....) Different lens same FL, different results? Frank Filippone red735i@earthlink.net > Don't you think it has to be the IR sensitivity? It seems reasonable > to me that this effect represents an IR halo around a candle, rendered > as purple by the M8. I do, but someone has been suggesting that these halos were primarily just focus problems, and I wanted to find out whether that is true. I don't think it is true.