Color Accent: B&W with a dash of Color

Here’s how to turn an image into black and white, leaving only one color as the accent. There are a number of ways of accomplishing this selective coloring effect depending on the image editing software you are using. In this tutorial, I will use Adobe Photoshop Elements 5.0.

1. Always make a copy of the image you want to work with, so you don’t muck up the original. Here is the image I will be using:

Original Picture
In this example, I want to keep the leaf green while turning the rest of the picture B&W.
2. Use the Magic Wand Tool to select the area (color) you want to accent.

Select Color
You may want to start with a Tolerance level of 30 and then switch to 10 as you get closer to selecting everything. You may also need to use the other selection tools to make it easier to select small areas of pixels. Use Shift + selection tool to add new areas to your selection and Alt + selection tool to remove areas selected by mistake. Ctrl-Z will undo your last selection.
3. Now, do Select – Inverse to select everything except the colored area.

Select Inverse

Everything except colored area is now selected
4. In the Layers window, click on the Create adjustment layer icon and select Hue/Saturation…

Create adjustment layer - Hue/Saturation...
5. Move the Saturation slide all the way to the left to remove all colors.

Desaturate all colors to B&W

Final Result

Et voilà!
Other examples:

In the example above, I selected the whole sail boat (instead of just one color) and let everything else go B&W.


http://www.photoxels.com/tutorials/tutorial-color-accent/

Selective Sepia

Learn how to use Photoshop to create selectively add a dramatic sepia effect a photo. This Photoshop effect works best when used with Photoshop CS3 but will also work with Photoshop CS2 or older using an alternative method.

Preview of Final Results

Selective Sepia Photoshop Tutorial

Step 1: Open an image into Photoshop

Open the File menu and select Open. Browse for the photo you would like to add a selective sepia effect to and click OK.

Step 2: Create a Hue/Saturation adjustment layer

In the Layers pallet, click on the New Adjustment Layer icon and select Hue/Saturation.


A Hue/Saturation window should appear. With this tool, we'll specify where the sepia effect will appear. Decide if you want to select the sepia toned areas according to the color of the image or by manually painting the areas where you would like the sepia tone.
Choose one of the following:

A) Select by color

Selecting the sepia areas based on color will give the most natural effect.
First, decide which color in the photo that you want to keep. Then, select from the edit drop down menu the each color in the list except for the colors you want to keep and reduce the saturation to -100. For example, to keep the reds in the photo use the following settings:
Reds: 0 Saturation
Yellows: -100 Saturation
Greens: -100 Saturation
Cyans: -100 Saturation
Blues: -100 Saturation
Magenta : -100 Saturation

B) Select manually

Manually selecting the sepia toned areas will let you specify precisely the area that you would like toned.
Set the master saturation to -100 and click OK. Your image should now appear grayscale.

Activate the layer mask by clicking on the layer mask thumbnail in the Layers pallet. Select the Eraser tool and erase the areas where you don't want the sepia tone to be applied to.

Step 3: Add a Black & White adjustment layer

In the Layers pallet, click on the New Adjustment Layer icon and select Black & White. If you are using Photoshop CS2 or older, select Hue/Saturation instead.

A Black & White (or Hue/Saturation if you're using Photoshop CS2 or older) adjustment layer should appear. Simply click OK without editing the settings. Then, change the blend mode of the top adjustment layer to Overlay. Double click back on the icon of the layer to bring back the tool.

Photoshop CS2 or older:
You will be using the Hue/Saturation tool to add a sepia tone. Checkmark "Colorize" and apply the settings below:

Photoshop CS3:
If you're using Photoshop CS3, you can use the Black and White adjustment to add a sepia tone. This will give you more adjustable settings compared to using the Hue/Saturation adjustment.
First, adjust the settings to get the black and white look that you like. Or, you can scroll through the presets menu to select one of your own. I chose the Red Filter preset to bring up the reds and darken the sky.

Checkmark the Tint and adjust the tone to create a sepia effect. Click OK when done.

Final Results

Red

Blue and Cyan

Yellow and Green

Red, Yellow, and Green


get from here

How to Create a Panorama with Photoshop and Photomerge

This post on Creating a Panorama with Photoshop and Photomerge has been submitted by Matt Dawdy from www.TheRightPic.com.

A panorama is simply a wide-angled view of a physical space. To the photographer a panorama is usually several photographs that are stitched together horizontally to create a seamless picture.
This is going to be a pretty simple tutorial in which we create a panorama using Photoshop’s Photomerge utility.

Here are the tools I am going to use to create panoramic photos:

1. A digital camera
2. A tripod or a stable surface or platform to take pictures from that allows some horizontal rotation
3. A computer and Adobe Photoshop and the Photomerge utility
When I started thinking about this tutorial I began to wonder what I should shoot. Just about any subject can be used for a panorama, however traditional panoramic photography subjects are typically landscapes or city skylines. I will show you a few different panoramas that I created, some typical, some a little different than what you would normally see for a panorama.

Setting up for your shoot:

A stable position to take your panoramas from is important. Isn’t it always when taking pictures? Well, with panoramas it is more important because the Photoshop process that joins your photos together is good at what it does but it is not perfect and when it has trouble putting the individual pictures together it either leaves ragged white lines in between the photos or chops large sections out of the photos because it doesn’t know what to do with them.
I would recommend you use a tripod since it allows you to turn your camera slightly in order to take successive shots. If you can’t use a tripod some sort of flat surface like the top of a wall, fence or a board may work as long as it is possible to take a picture and then rotate your camera slightly and then take another picture without vertical movement.
Once you find your potential spot and set your camera up, rotate it to the extreme right and left edges that you want to include in your photo and make sure that there isn’t anything that is too big of a visual or physical obstruction. Something else to keep in mind is to try to set up so that the full range of your shot does not show shadows from you or your camera.

The actual shoot:

For the panoramic pictures I take I start at the extreme left of what I want to capture, set my timer and take bracketed exposure shots. I then stop and check the photos without moving the camera. If one of them looks OK I am ready to continue. If not, I adjust my settings and shoot again from the same spot.
When you have the settings you want and have taken your extreme left pictures it is time to grab a reference point in the viewfinder about 20%-30% away from the right side of your viewfinder. You do this because you are going to swivel the camera so that this reference point is at the far left but still in the viewfinder so that there is some overlap between your photos.

The green arrows show my chosen reference point, which is a point that I will use to make sure I don’t swivel too far to the right and leave a gap in between my two pictures. The dotted line represents the overlap that I am going to have between this and my next picture. The second picture is shown diagonally lower than the other one for display purposes only.
As far as overlap is concerned, you are shooting digitally so snap away, overlap 30-50% if you want, but err on the side of overlapping too much. If you don’t overlap enough, as Photoshop’s Photomerge app attempts to blend the shots it will not have enough of a fingerprint to blend well and your panorama will end up with the ragged white lines that I wrote about earlier or look like Frankenstein’s version of a panorama.
Once you mentally choose a reference point such as a tree or prominent peak swivel the camera to the right until your reference point is almost at the left edge of the viewfinder. Try not to move the camera position, vertical pitch or height. Once you have swiveled far enough repeat the process that you did to take the first picture.
Now simply repeat this process until you come to the extreme right end of your desired panoramic shot:
1. Choose a reference point about 20-30% away from the right edge of the viewfinder
2. Swivel the camera to the right until your reference point is at the left edge of the viewfinder
3. Take the picture
4. Repeat until you have taken photos that cover the entire area you wish to capture in your panorama

Make your panorama:

Now you are ready to ’stitch’ your photos together.
1. Open each photo that you wish to add to the panorama in Photoshop. Open them sequentially, starting with the leftmost one first.
2. In Photoshop CS3 (or CS2, not sure about other versions) go to File > Automate > Photomerge
3. In the dialog that appears choose Auto and then click the “Add Open Files” button
4. Check the filename numbers of the photos that are added, assuming you allow your camera to number your photos. If you started off shooting from the left of the panorama the lower numbers should be at the top. In other words, it should read something like this:

If the filenames are out of order remove all of the ones that are before the one that should be first. Now just click Add Open Files again and it will add the pictures back in. Keep removing files and adding them back until you have your files in order.
Click OK. Now Photoshop goes into action. It analyzes and blends the photos. This could take several minutes. Once it is finished you will see what Photoshop and Photomerge could make out of your photos.

Here is my neighbor’s fish tank. A lot of it got lost in the Photomerge process, in fact I would guess that I lost about 50% of my picture material which is probably due to the fact that the images are dark and very similar and Photomerge probably had a difficult time piecing it together. Still, the picture isn’t a total loss. One thing that did happen that is common with Photomerged pictures is that it is on a slight tilt to the left.
If this happens to you, first flatten your image and then do an Arbitrary rotation until the picture looks level.
Next, crop the picture. If you are unfamiliar with how to do this just press C. Click and drag a box over the area of the picture you want to keep. Press ENTER and the rest of the photo will be gone.
Next, you might want to adjust your saturation, exposure, hue levels, etc, until you are happy with the photo. Make sure you zoom in all of the way to 100% and look the photo over, zoom back out and move around. Look for obvious problems with the picture.
As for me, I have a fishtank with a couple of blurry fish but a decent looking photo that ends up being 88″ wide by 23″ long, give or take a little.
When you are done playing with the coloring and exposure do a Smart Sharpen by going to Filter > Sharpen > Smart Sharpen. I would set the Amount to 60% and set the Radius to 1.0. Click OK.
Go ahead and save your picture and you have a panorama! Here is mine with the default Photoshop frame action added (the photo has been shortened and saved at a low res to make it more web palatable) (click to enlarge the following image):

Given time I would add a couple of good looking fish from other photos and clean up some of the rough spots, but this is a good start.
Here are a couple of other panoramas that I took (click to enlarge):

A field near where I work. The actual panorama is 204″ x 24″.

Here are some homes and a range of mountains with the waste from a giant copper mine. Actual panorama is 94″ x 23″

http://digital-photography-school.com/creating-a-panorama-with-photoshop-and-photomerge

Camera Shake

The phenomenon known as camera shake is caused by movement of the camera (hence the name :-)), which becomes noticeable as blur when using a slow shutter speed. The resulting blur is not quite the same as the blur caused by incorrect focusing.

How can we tell the difference between blurred focus and camera shake?

Have a look at the picture on the right. Here we have a mixture of blur caused by the subject moving, blur caused by the camera moving and the blur of the background which is out of focus. The focus is actually sharp on the main subject, but you'll have to take my word for that :-). You can see the difference between the two types of blur if you look closely, rather than a general fuzziness, movement blur looks more like a double exposure or a series of exposures. If you look at the back wall in this first picture you can see both types of blur. The wall is 'soft' due to being out of focus but also there is a double, or triple, image which is caused by camera movement.
Motion blur, whether it is caused by movement of the subject or movement of the camera, looks the same. Although some of the movement is caused by the guitarist moving, the microphone, which wasn't moving, is blurred too, as is the background, this is due to camera shake.

Take a look a this second photo, The photo is now generally sharp because I have used a flash, and therefore a much faster shutter speed, but the wall is still blurred because it is out of focus. I think if you look at the green tiles in both pictures you can see the different types of blur quite clearly.
Whereas blur caused by movement of the subject can be desirable, sometimes, to help create 'atmosphere' in a picture, camera shake should be avoided in all but the most 'arty' type of photos.

Why do we get camera shake?

No matter how careful we are, when we press the shutter button there is always some movement of the camera. At faster shutter speeds there is no noticeable effect on the picture but at slower speeds the blur becomes apparent. The way we stand, the way we hold the camera and how vigorously we press the shutter button all have an effect on the amount of movement we get.

How can we avoid movement blur from camera shake?

To eliminate the blur we can do several things:-

1. Use a faster shutter speed and/or a shorter lens.
2. Use a tripod with or without a remote release.
3. Brace ourselves as best we can against a wall or other object to minimize movement.

1) The most obvious way of eliminating shake is to use a faster shutter speed. Either by opening the aperture wider or introducing more light by using a flash gun for instance.

The rule of thumb for a sharp picture, free from the effects of camera shake, is to use a shutter speed which is at least as fast as 1 divided by the focal length of the lens. So if you are using your zoom set at 100mm you should use a shutter speed of at least 1/100 of a second. If you are using a 50mm lens you will get a sharp picture at 1/50th of a second.

The reason why the focal length of the lens is important is that camera shake becomes more apparent as the angle of view gets narrower, the narrower the angle of view the more the shake is magnified. You will know this if you have ever tried to hold a telescope or a high powered pair of binoculars still.
2) Putting the camera on a sturdy tripod is the best way to keep it still and this is the way to go, especially when you want to get some movement blur from the subject like in the waterfall picture here. Even better is to get a remote release for the camera so you don't have to touch it at all.
3) If, like me, you didn't bring your tripod with you and you still want to take pictures in the dark, you can stretch the rule of thumb (above) by a few stops by bracing yourself and/or the camera against a tree or wall or lamppost. Also controlling your breathing can help quite a bit too. Here's a picture shot at a slow shutter speed using this technique.
Finally I just want to say that an inherent problem with a lot of today's smaller cameras, especially phone cameras, is that, because they have no viewfinder, we are obliged to hold them at arm's length to view the screen, often holding them only with our fingertips. This makes them infinitely more difficult to hold still and makes them much more prone to show the effects of camera shake. So even more care needs to be taken to get a sharp picture. If you are taking a picture with a phone camera (if you really must!), try to rest it on something, a table or wall, to help keep it still.

http://www.geofflawrence.com/camera_shake.html