Merged them how? The reason I ask the question is that I recently had
to do something vaguely similar. I got acceptable results but not what
I expected to begin with.
My daughter seems to have recently discovered color photos converted to
B&W yet preserving some part of the color image. She wanted to make a
montage of her kids with that type of photo. She asked if I could do
this with two photos of my granddaughter preserving just the pink of her
dress and matching hat. I did that without much difficulty and don't
actually remember how... probably just merging the color and B&W under a
selection mask. Then she hit me with a tougher problem. She wanted the
same thing done with two pictures of my grandson which I had shot 11
years ago in B&W. She wanted just his shirt in color. As it turned out
I had a color image of him from about the same time where he was wearing
a red shirt, possibly even the same shirt as in the B&W photo. So I
went for red but didn't end up there.
The way I did it was to select the shirt in one layer and paint it the
same solid red as the color image. I then blended the B&W image below
by varying the opacity of the top layer. What came out was a muddy,
very dark red which hid much of the detail in the shirt. I tried
lightening the B&W underneath but the darker and shadowed parts of the
shirt were problematic. Too much pure black and too much noise from the
almost black. So I tried it again with a very light pink. What came
out then was a purple color but with lots of seam and fabric detail from
the shirt still visible. It was still too saturated for comfort so I
knocked the saturation way down. That gave a pleasant image but was
still a soft purple and I didn't know how to change it. Fortunately,
daughter said: "I like it that way" and I was done. So I accomplished
what she was after but still have no idea why I got what I did or how it
might have been done better. The change from light pink to purple is
the most perplexing part since there was no blue in the underlying
image... only pure B&W.
Chuck Norcutt
On 12/10/2013 9:20 PM, Ken Norton wrote:
>>> Great Sand Dunes National Park. Olympus OM-4T, Zuiko 200/4. Fujichrome
>>> Provia 100F. An interesting, but long and convoluted description of
>>> the processing for this one:
>>>
>>> http://zone-10.com/tope2/main.php?g2_itemId=9864
>>>
>>
>> Did I miss the description (still catching up)?
>>
>> I like all four images. This one I found quite unusual and involving.
>> Anyway, I'd be interested the convoluted description.
>
> Thank you for asking!
>
> I took the color image, extracted the luminance channel, extracted the
> red channel and merged them using hard light. I then further processed
> the resulting B&W image to the contrast and brightness I wanted then
> merged the resulting image with the color channel of the original.
>
--
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