1- Open your image in Photoshop
2- (Assuming you are a PC user) press ctrl+J to duplicate the background layer.
3- Now press ctrl+alt+B to open the BW dialog box.
4- Use the red and yellow sliders to make them white, but don't go too far. Press OK
5- Grab the Dodge tool from the panel on the left hand side.
6- Shift+Right click on the picture. There should pop a menu with 3 choises (highlights, midtones, darks)
7- Choose "highlights"
8- Use a %50 opacity (at the menu, on top) and use the dodge tool on the white areas to make them perfectly white. Don't force it on corners, you may get jiggy lines...(what is jiggy? I just made it up LOL)
8a- Use white brush to fill the easy parts, use dodge tool on corners, to save time :)
9- Now ctrl+A to select all the picture
10- Go to "channels" window (if not visible, find it on "Window" menu)
11- On the bottom of channels panel, find "create new channel" and click it.
12- Now we have a new channel, select it and press ctrl+V to paste your BW picture in it.
13- Press ctrl+2 to select the RGB channel or simply click on the RGB to select it, in the channels window.
14- Press ctrl+D to deselect everything.
15- Go back to the layers panel and delete the bw layer. Re-duplicate your background.
15- Again on the channels panel; Ctrl + Left click on the new channel, you just created...you should have a perfect selection of your flame.
15a- Menu>Select>Modify>Feather (%0,5 - %1) to make the jiggy lines smoother
16- Back to the Layers panel :)) select new duplicated layer, and click on the "New Mask" button on Layers panel.
17- Make the Background layer invisible...voila! :)
For further improvements, select the created mask and use "Levels" or anything you want for corners and other parts...never delete the layer, because a mask will give you much more flexibility to make changes.
I'm sorry I'm too late but this is how I isolate all my images! It's pretty fast and works like a magic on hair.
Maybe I should use this text as a blog :))
Whatever...save your image as PNG (Interlaced: NO) and upload it as an additional format. Dreamstime accepts PNG additional formats with transparency.
...and thanks for this question, you made me write my very first blog article
- Nikkor 50mm f1.4
- Nikkor 50mm f1.8
- Tamron 90mm f2....