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Old May 11, 2003, 1:53 AM   #1
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Default RAW files with Skylight filter

Been experimenting with using Skylight filter shot in NEF format here are a few samples from 28-70 AF-S & 80-200 AF-S with Heliopan Skylight Filter EV+.3 straight from camera Auto WB, Auto Tone. Nothing else but resized for display for posting. Taken at about 4:00 pm

Shot towards the sun and to left side
http://www.jtgraphics.net/sample/carfire.jpg
Sun at my back
http://www.jtgraphics.net/sample/goinhome.jpg
Right side light
http://www.jtgraphics.net/sample/hasmat.jpg
Sun at my back
http://www.jtgraphics.net/sample/laddertruck.jpg
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Old May 11, 2003, 8:54 AM   #2
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question: by auto WB wouldn't you sort of remove the effect that a skylight B(slight warm) would try to put in?

since it sees the warmer tone the AWB will try to adjust for it. i believe if your going to use a filter such as that your going to need to do a Manual WB lock it and then use the filter to get the enhancement you want.

this of course depends on where the WB is taken. if its TTL there might be an issue. or like a eos1d, 1ds, or 10d have external WB sensors which are unaffected by a filter put over the lens.

i'm not pushing the canon since i have used Nikon for 15yrs and will continue to for film.
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Old May 11, 2003, 10:11 AM   #3
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First a little correction on my first post EV was set to +.3 not EV+3
Yes quite true but as I mentioned this was just an experiment. But it also seems that for some reason that the in camera processing did a much better job on exposure from what I have seen using a skylight on the lens I took 60 photos and all came out the same way something that it did not do before. I will be testing more with different settings also with the filter to see what the camera does with the exposure. I have never put one on any of my digital cameras so very curious as to what affect it has on digital, seems to have a little different affect on digital over film.
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Old Jul 26, 2003, 4:22 PM   #4
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I am probably wrong here, but isn't the WB disabled when you use RAW NEF files? I thought it was supposed to be disabled and then you use the software to correct for WB.

I just got my D100 camera and am a complete rookie, but I thought I read that in the manual.
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Old Jul 27, 2003, 3:16 AM   #5
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The NEF retains the original exposure data from the camera, including WB used, should you decide to use the camera settings when converting an NEF to JPG or TIFF. And of course, you may disregard the WB used and pick/adjust your own.
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