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An experiment to enhance subject lighting

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  #11  
Old 06-19-2007, 05:10 PM
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Re: An experiment to enhance subject lighting

duwayne... sometimes going by the numbers isn't always the best way. I do it when I'm stumped (especially looking for a 50% gray). Sometimes there IS no absolute black and white, but you can still get crisp blacks by finding something close enough for horse shoes or hand grenades. :-)
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  #12  
Old 06-19-2007, 07:12 PM
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Re: An experiment to enhance subject lighting

Sometimes the black white and gray levels can be hard to find. One way to do it is to use the threshold layer, and the color sampler tool. 1. add a threshold layer, and slide the slider to the left, until there are only a few spots of black left, and mark it with the color sampler tool. Delete the threshold layer. 2. add a threshold layer, slide the slider to the right until there are only a few white spots left, and mark it as above. Delete this threshold layer. You now have the white and black levels marked. 3. To get the gray level, add a blank layer, and fill it with 50% gray. Change the layer mode to difference. Now add a threshold layer again, and slide the slider to the left until you only have a few spots of black. Mark it with the color sampler. Delete the threshold layer and the 50% gray layer. You now have the gray level marked. From here you can add a curves layer or a levels layer, and use the black dropper on mark 1, the white marker on mark 2, and the gray dropper on mark 3 to adjust.

If this is confusing, and anyone is interested, I will put a better tutorial together for you later.
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  #13  
Old 06-19-2007, 08:29 PM
duwayne duwayne is offline
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Re: An experiment to enhance subject lighting

Thanks Dave - That is the process I used for the black and white points but I have always had trouble finding a neutral point. You've made my day. If you find the neutral point this way and check the info palette, the red/blue/green channels are exactly the same. Just what you're looking for.
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  #14  
Old 06-20-2007, 02:47 AM
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Re: An experiment to enhance subject lighting

Hi Duw,

i tried what you told actually somehow i couldn't get that quality of result what U got. Than i tried this, based on your method

saby
Attached Images
File Type: jpg 1.jpg (98.3 KB, 8 views)
File Type: jpg 2.jpg (92.9 KB, 13 views)
File Type: jpg 3.jpg (99.8 KB, 6 views)
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  #15  
Old 06-20-2007, 04:35 AM
duwayne duwayne is offline
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Re: An experiment to enhance subject lighting

Saby - I like your approach of using curves instead of Threshold to generate the masks. It removes some of the guesswork. The masks are also not pure black and white so it takes less Blur to blend. Using your Curves approach and less blur I got the attached results. I also added a Color Balance Adjustment Layer on top to boost the Cyan and Blue (the slight green color cast has bothered me ever since Swampy mentioned it).
Attached Images
File Type: jpg jfyM0UVr2254b-orig.jpg (86.8 KB, 6 views)
File Type: jpg jfyM0UVr2254c.jpg (80.1 KB, 10 views)
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  #16  
Old 06-20-2007, 05:13 AM
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Re: An experiment to enhance subject lighting

Seems real live color , i prefer that glow what U got at first so i suggest a desaturated, boosted gamma soft light layer,with a high blur to get it back

saby
Attached Images
File Type: jpg jfyM0UVr2254c.jpg (95.7 KB, 6 views)
File Type: jpg blend.jpg (71.1 KB, 3 views)
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  #17  
Old 06-20-2007, 04:53 PM
duwayne duwayne is offline
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Re: An experiment to enhance subject lighting

Saby - Here is a second image that I used your Curves method to create the mask. No other adjustments were made. I think it's a great improvement over using the Threshold layer. Have you tried it on other images?
Attached Images
File Type: jpg s05b-0.jpg (92.4 KB, 12 views)
File Type: jpg s05b-1.jpg (97.0 KB, 13 views)
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  #18  
Old 06-21-2007, 02:30 AM
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Re: An experiment to enhance subject lighting

Hi Duw, i like this above

Here you are some, at this kind of lightning the curves or treshold method are equvivalent. I think ultimately we should use both method curves for the detailed lights and threshold for the glow what is really great

saby
Attached Images
File Type: jpg orig.jpg (98.2 KB, 8 views)
File Type: jpg treshold.jpg (97.9 KB, 8 views)
File Type: jpg curve.jpg (98.2 KB, 9 views)
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  #19  
Old 06-21-2007, 01:04 PM
duwayne duwayne is offline
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Re: An experiment to enhance subject lighting

Saby - Here's another one with natural sunlight using the Curves approach. I wanted to clear up something. After creating the mask with Curves and pasting them into the highlights and shadows layer masks, I am still applying a Gaussian blur to each mask of about 30. I think this accounts for the "glow". Without the Gaussian blur, the affect is harsher.
Attached Images
File Type: jpg 45402006_e524c6ddc2_oa.jpg (85.9 KB, 11 views)
File Type: jpg 45402006_e524c6ddc2_ob.jpg (83.0 KB, 13 views)
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  #20  
Old 06-21-2007, 01:39 PM
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Re: An experiment to enhance subject lighting

What blur I've used, was about 15%. It could be slim

saby
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