Monday, November 7, 2011
How to Create a Flaming Photo Manipulation
Thursday, November 3, 2011
Photoshop: Clone Stamp
The Clone Stamp tool paints one part of an image over another part of the same image or over another part of any open document that has the same color mode. You can also paint part of one layer over another layer. The Clone Stamp tool is useful for duplicating objects or removing a defect in an image.
(Photoshop Extended) You can also use the Clone Stamp tool to paint content on video or animation frames. See also Cloning content in video and animation frames (Photoshop Extended).
To use the Clone Stamp tool, you set a sampling point on the area you want to copy (clone) the pixels from and paint over another area. To paint with the most current sampling point whenever you stop and resume painting, select the Aligned option. Deselect the Aligned option to paint starting from the initial sampling point no matter how many times you stop and resume painting.
You can use any brush tip with the Clone Stamp tool, which gives you precise control over the size of the clone area. You can also use opacity and flow settings to control how paint will be applied to the cloned area.
- Select the Clone Stamp tool
.
- Choose a brush tip and set brush options for the blending mode, opacity, and flow in the options bar.
- To specify how you want to align the sampled pixels and how to sample data from the layers in your document, set any of the following in the options bar:
- Aligned
- Samples pixels continuously, without losing the current sampling point, even if you release the mouse button. Deselect Aligned to continue to use the sampled pixels from the initial sampling point each time you stop and resume painting.
- Sample
- Samples data from the layers you specify. To sample from the active layer and visible layers below it, choose Current And Below. To sample only from the active layer, choose Current Layer. To sample from all visible layers, choose All Layers. To sample from all visible layers except adjustment layers, choose All Layers and click the Ignore Adjustment Layers icon to the right of the Sample pop‑up menu.
- Set the sampling point by positioning the pointer in any open image and Alt-clicking (Windows) or Option-clicking (Mac OS).Important: Make sure you are not working on an adjustment layer. The Clone Stamp tool does not work on adjustment layers.
- (Optional) In the Clone Source panel, click a clone source button
and set an additional sampling point.
You can set up to five different sampling sources. The Clone Source panel saves the sampled sources until you close the document.
- (Optional) Do any of the following in the Clone Source panel:
To scale or rotate the source that you’re cloning, enter a value for W (width), H (height), or the rotation in degrees
.
To reverse the direction of the source (good for mirroring features like eyes), click the Flip Horizontal
or Flip Vertical
buttons.
- To show an overlay of the source that you’re cloning, select Show Overlay and specify the overlay options.Note: Select Clipped to clip the overlay to the brush size.
- Drag over the area of the image you want to correct.
Wednesday, November 2, 2011
Different formats for image
Saving Files for the Web
Photoshop files themselves can’t be embedded into a web page. You will need to export your file and save it in a web-friendly format. There are three formats for web graphics: GIFs, JPEGs, and PNGs.
GIF
The GIF format (pronounced “jiff” or “giff” depending on which side of the tracks you grew up) can have a maximum of 256 colors. GIF files support transparency and animation, and work best with graphics that have large areas of the same color, as shown in the logo below.
JPEG
The JPEG format (pronounced “jay-peg”), works best with photographic images or images that have more than 256 colors and gradients, such as the flower on the opposite page. Images saved in JPEG format are compressed, which means that image information will actually be lost, causing the image to degrade in quality.
PNG
The PNG format (pronounced “ping”) is similar to the GIF format in that it supports transparency and works best with solid-color images like the logo shown to the right, but it’s superior to the GIF format as it has the ability to support true levels of transparency for colored areas. Transparent PNGs are currently not in widespread use on the Web because older versions of Microsoft Internet Explorer do not support them; however, they’re often used in Macromedia Flash movies. PNGs can produce a better quality image at a smaller file size than can GIFs. Photoshop allows you to save an image as a PNG-8 file (which works the same way as a GIF would with 256 colors) or a PNG-24 file (which allows for millions of colors as well as variable transparency).
Double-clicking Power
As if keyboard shortcuts weren’t quick enough, Windows users have even more ways to open and save files, such as: holding down Ctrl and double-clicking the work area to create new documents double-clicking the work area to pull up the Open dialog box to open files holding down Alt and double-clicking the work area to open existing files as new documents holding down Ctrl-Shift and double-clicking the work area to save documents holding down Shift and double-clicking the work area to access Adobe Bridge — Adobe’s “control center” and file browser The work area is the gray area behind the document windows. If your shortcuts aren’t working, check that you are clicking on an empty spot on the work area, and not in one of the document windows or Photoshop tools! Alas, Photoshop on a Mac does not have a work area, so Mac users won’t get to enjoy the goodness of double-click shortcuts.
To save for the Web in Photoshop, select File > Save for Web & Devices… or press Ctrl-Alt-Shift-S(Command-Option-Shift-S on a Mac). This will bring up the Save For Web dialog box shown overleaf, which will show you a preview of the image that will be exported, with its optimized size in the bottom left-hand corner. You can adjust the settings for the image using the options in the pane on the right. Choose whether you want to save the file as a GIF,JPEG, PNG-8, or PNG-24, and have a play with the other settings, keeping an eye on the optimized file size. Try to strike a balance between the quality and file size of the image. When you’re happy with your result, click Save and give your image a filename.
If you tried the above exercise, you’re probably quite pleased with yourself for saving an image of reasonable quality at a file size significantly smaller than the original. You managed this by altering the settings in the right-hand pane, but what do these settings actually do?
GIF/PNG-8
- colors – Adjusting this setting reduces the number of colors used in the image. This will usually make the biggest difference in the final image.
- dither amount and type (No Dither, Diffusion, Pattern, Noise) – This setting has nothing to do with being nervous or agitated (although it’s quite possible that you may have been a few moments ago!). Dither refers to a compression technique in which the pattern of dots is varied to give the illusion of a color gradient. Changing the dither will result in a more noticeable degradation for images that involve a large number of colors blended together.
- transparency – If you want transparent areas in your graphic, check this box. We’ll look more closely at transparency in Chapter 2.
- matte color – For transparent images, the matte color is used to help blend the edges of your image into the background of the web page. For non-transparent images, the matte color defines the background color of the image. Using matte color with transparent images is covered in more detail in Chapter 2.
JPEG
- quality – Changing the value in the Quality drop-down box alters the level of compression for the image. Reducing the quality may result in blurring or pixelation, but too high a setting will produce a large file that will take users too long to download. A good approach is to decrease the quality value gradually until you notice the degradation of your image becoming unacceptable. A reasonable compromise will be somewhere around this point.


