Showing posts with label colour correction. Show all posts
Showing posts with label colour correction. Show all posts

Saturday, November 3, 2012

How to use a very useful filter

I have recently downloaded a free filter from http://yaelmaritz.com/extras.php that I thought might be handy when I have photographs with horribly blown out white skies. Today I have had a chance to play with that filter and since the picture I chose was far too complex for my usual methods of replacing skies I thought I might share the steps I took. You may find them useful when you come to try this yourself. (I work with Photoshop Elements 9)
Here is the picture I worked with. As you can see, the sky is filled with white clouds which were very bright. The camera had been set to brighten the bird and so made the background even more dazzling. This meant that the photo has stayed in my collection and as never been shown to anyone.
With all those twigs and leaves you can understand how difficult it may be to replace the background so lets see what my new "Kill white" filter will do.
First of all I created a duplicate layer (Ctrl + J).
Since there is white in the bird and in the twigs that are in focus I needed to make sure the filter did not remove any white from them. So I selected them. To do this I chose the Quick Selection Tool and made sure that the tool was set to add to the selection.
Now I stroked along the bird and the thin branches and the leaves making sure that I was including all the elements that I did not want to have any white removed. The soft focus and minor twiggy bits I did not save. Then I clicked on the "subtract from the selection button (to the right of the one the red arrow is pointing to) and removed from selecting the bits of sky between the bird and the twig that had been included. I had to zoom in tight to see what I was doing. Because the selection had taken time to refine I didn't want to lose it so I clicked on Select (Menu bar) and then on "Save Selection" and gave a name as requested by the drop down box. "bird"
After doing that I realised that I needed to have a blue sky to replace the white that I was going to remove. It was just as well the selection had been saved because now I have to "deselect" !
After clicking on the "eye" on the left of the layer to make it invisible, I clicked on the background layer in the Layers Palette and then added a blank layer by clicking on the "create a new layer" button (hover over the buttons and text will appear).
With a light shade of sky blue and a very light shade of the same colour I then used the gradient tool to create the sky - drag from about a third of the way down from the top right down to the bottom of the picture area with the darker colour to be at the top. If it is lighter at the top than the bottom just Ctrl +Z to undo what you have done and change the background and foreground colours by clicking on the tiny two way arrow, then drag down the image again.
Click on the empty box to replace the "eye" (the visibility) for the layer. The bird picture now hides the sky layer. Now to use that new filter! First of all I needed to put my selection around the bird and branches so I clicked on "Select" then on "Load Selection" and said "OK" to the bird selection. I I now applied the filter it would affect inside that selection - that was not what I wanted! Click on Select and then on "Inverse" to change the selection to the sky area.
This is what happened next.
How amazing is that? But there is a problem. There are a few little bits that were missed. The red arrows point to two of them. Time for another little technique.
Now I needed to create a mask and paint away those white bits.
When a mask is put onto a layer the background and foreground colours in the tools palette change to black and white. The black needs to be the forground colour. Use the little two way arrows to change it if white is the foreground colour. I had to zoom in very tight to see what I was doing and with a small soft edged brush painted away those white bits.
The results are worth it.
The picture needs to be flattened before it can be saved as a .jpg.
You can flatten in a few ways, right click in the layers palette and click Flatten Image or click on the symbol indicated in the image above and then click on Flatten Image OR go to the menu bar and click on Layer then on Flatten Image.
If I put the before and after images side by side you can see the difference.

Do you think you could improve one of your images the same way? I suggest you download the Killwhite filter, follow the instructions that come with it to install it in your program and see if you can follow my steps. If you have photos of skies (I have many!) one could be resized and used in place of the gradient layer.
If you have problems, drop me a line joanren@gmail.com
Have fun!
AJ





Tuesday, March 20, 2012

Having another go with Photoscape

I have spoken to a few people who have downloaded Photoscape and are having a play with it and they are quite excited about what can be done. None of these people are clever "photoshop" users, they find the layers and masks and processes all very confusing and yet they are having a great time with this program and are getting very good results. It is good that a program such as this is not only easy to use but effective at all kinds of tasks too.
One of the people I have chatted to is scanning old slides and the results of the Photoscape manipulation I have been shown are excellent.
This photograph is a comparison shot. The photo on the left is how the original scan looks (I worked on this photo - it is of me a VERY long time ago!) The program allowed brightness and contrast correction, colour removal and cloning. The cloning tool is faultless! I was totally amazed at how easy and how invisibly the repairs were made. When scanning old photos there are always little black and sometimes, white, dots that mar the picture. I was able to zoom right in and use the clone brush to remove those blemishes.
If I wanted to give the corrected photo a sepia wash so that it looks as dated as the original a quick click on the appropriate filter will do that. But since the photo was a black and white originally and only time and poor developing has changed it to dull brown I will keep it the way I have now made it!
AJ