First, let’s open the original photo in Photoshop or other software that will create layers.... I’m going to use an image I made of CityCenter in Las Vegas of Aria Resort Casino and Veer Towers on a rainy day. Make a copy background layer so no damage is done to the pixels on the original image.
Veer Towers are twin 37-story condominium towers with the towers leaning in opposite directions
Now, in Photoshop go to Select » Color Range and click the sky near the top to sample a color, in this case the dull grey area. Set the Fuzziness level to 85 and press Ok. Marching ants will select the area to be replaced
Invert selection ...notice black replaces the white sky
Load the sky picture you’d like to use in Photoshop. I will use a sky image from my library. Press Ctrl+A (alt+A on PC) to select all, and Ctrl+C (alt+C on PC) to copy selected area. Then, switch back to our original image, and go to Edit » Paste Special » Paste Into. Name the new layer Sky.
For a more dramatic look you can play with different skies to create a totally different effect....such as a sunset.....
Which image do you like better...please leave your comments below...