Originally posted by uday029 How did you manage to change the sky?
Hi
I don't use LR, so I can't help you here.
There are different ways to do this. But in each case you must select the area of the sky by isolating it from the rest of the image. Only this way can you squeeze out any detail from there without affecting the rest of the image. I do not know how to select a particular area in LR.
In PhotoShop
1) Quickest way here because of the clear sharp edged area, use Magic Want (say 20 strength) click on area and add left over spots by going over it with the Magic Wand tool while holding down the shift key. Next select Image > Adjustments and use slider to reduce Brightness and increase Contrast.
In Photoshop you can do this also with adjustment layers, (confine adjustment and fill layers to specific areas, there are tutorials available on the net) it is a bit more complicated. Probably all this is done best before converting the image to B&W. And it helps if the image was shot in RAW.
2) Use Nik Viveza, put a control point over the area of the sky - reduce brightness and increase Structure. As Nik is a PS Plugin you can also do this while the area is still selected by the magic wand, this way it limits Viveza's adjustment only to this area alone. Also best done before B&W conversion.
Nik is the lazy man's manipulation tool, now available for free by Google. (It used to be quite expensive)
Cheers
P.S.
I have actually done the posted image in PS using adjustment layers but it is a long and slow process. I have then used Nik Viveza to do the same and let me tell you I could not see any difference ! Using Nik took seconds PS more than twenty minutes.