Sharpening with Software
If the camera allows you to shoot in RAW, the in-camera sharpening can be undone via software afterwards on your computer.
Sharpening Masks
Figure 1: One Pass Sharpening Problems
Up until now, we have basically prepared some type of sharpening and applied it to the entire image. This can cause problems.
Sharpening Techniques
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Sharpening your photos using Unsharp Mask
More than you ever wanted to know about sharpening your photographs in Photoshop
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Sharpening with the Unsharp Mask filter
The unsharp mask filter in Photoshop can be used to save certain blurred pictures.
Sharpening the picture is meant to correct for the guesswork that the camera had to do. The photo-editing program analyzes the borders between colors, and makes them stand out again.
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PDF version Sharpening
Sharpening
One of the most frequently-used yet most commonly misunderstood post-processing operations has to be "sharpening" -- technically "unsharp masking" or USM for short.
Sharpening & Softening
In conventional photography an image is either sharp or unsharp. There is not much that can be done about that.
Sharpening a Fine-detailed Subject
Figure 3 shows an example of a photograph that contains a lot of fine-edge detail, where the Sharpening sliders in the Detail panel needed be taken to extremes.
Smart Sharpening
Even though Photoshop is already an extremely impressive piece of software, Adobe keeps hard at work looking for ways to make it even better. The newly released Photoshop CS2 is their latest giant step forward on that quest.
Output Sharpening
Output sharpening benefits printed images. Images intended for display on monitors rarely need to be sharpened for output, unless they're substantially resized.
Default settings with NO sharpening were used for all RAW conversions.
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Sharpening Images with Photoshop
Usually, the first thing I do after converting a RAW file is to sharpen my image. Due to the way your cameras sensor works, a certain amount of blur is always introduced (see.
Sharpening - Sharpening essentially enhances the edges of an object in a digital image to make them look sharper.
Shutter - This is the mechanism on the camera that can open and close to introduce light to the image sensor and/or film.
Sharpening
A post production process that increases contrast and adds apparent clarity or sharpness to a digital image. The most common method is called unsharp masking (USM).
(see Post Production & Contrast)
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Sharpening
Sharpening is an algorithm designed to enhance edge detail.
Sequence ...
Sharpening - Increasing the apparent sharpness of an image by increasing the contrast between the adjacent tones or colors.
Smoothing - To blur the boundaries between tones of an image, usually to reduce a rough or jagged appearance.
sharpening
(1) a picture enhancement that creates more distinct borders, areas, lines, or tones: (2) scanner option that empashizes detail by increasing the contrast of the boundries between light and dark areas of an image.
Sharpening
The process of increasing (or emphasizing) contrast around the edges of details (comprised of pixels) in an image.
sharpening
A software method of increasing the definition of edges in an image by increasing the contrast of the image.
Sharpening. Increasing the apparent sharpness of an image by boosting the contrast between adjacent pixels that form an edge.
Sheet film. Film supplied as individual sheets, usually 10 or 25 to a box.
Sharpening
Sharpening in a digital sense is the enhancing of edge detail. It is performed by a mathematical formula which is applied across the image. Put simply it enhances the visibility of a boundary between light and dark tones in an image.
Sharpening
Digital images are inherently soft due to the nature of pixels and how we perceive the images they collectively produce.
Over-sharpening correction
Some image processing algorithms happen to introduce over-sharpening artefacts to the image.
What Is Sharpening?
Sharpening is enhancing the edges of an image. This edge enhancement technique is called unsharp masking and involves isolating the edges in an image, amplifying them, and then adding them back into the image.
Sharpening is a simple, effective way of increasing the quality of a picture using two specific parameters, resolution and acutance. Resolution refers to the camera and how well it can record fine detail. Acutance refers to line edge sharpness.
Sharpening photos is easy to overdo—especially for web display. Oversharpened photos seem filled with razor-sharped edges and internal details that look as prickly as a bed of nails. And tiny halos appear on contrasty edges.
Sharpening the image is the next step in the photo touch up process. Contrary to popular belief, you can't actually sharpen an out of focus image. What I typically do when sharpening an image is to selectively sharpen.
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Sharpening is one of the most misused functions of Adobe Photoshop. Sharpen too little and your picture's fuzzy; sharpen too much and your photo will look "digital" in the worst way.
sharpening applied to the result of superresolution processing - for comparison with the sharpened original ...
Two, sharpening artifacts. Perhaps you've seen those little halos around some edges within your photo. That's because point-and-shoot cameras typically have the sharpness setting too high.
Normal Sharpening
Cloudy White Balance
Matrix metering
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Image Resolution The number of pixels in a digital photo is commonly referred to as its image resolution. Image Sharpening A function that controls the sharpness of outlines in photographs.
You can preview the sharpening effect. Be careful not to oversharpen. When you oversharpen you will often see a strange grainy dot pattern somewhere in the image.
To get the best results, mix smart interpolation with careful sharpening. For example, let’s say your image is from a 2MP (1200x1650 pixels) camera.
Amount - this controls the strength of sharpening.
Radius - this controls the width of the edges on which to apply sharpening. For photos with very fine details use lower radius settings.
Assuming you set your camera options (Tone, Sharpening, White Balance, etc) accurately before you capture the image you can then use the JPEG image as an excellent and fast way to review your images, email them, ...
Noise Removal and Image Sharpening
Digital noise is present to some degree in every captured image. You need to reduce this digital noise, particularly if you are making a large print.
Most cameras automatically sharpen the edges of details and borders in your images, but some allow you to specify how much sharpening is used, or even turn it off.
Presently, however, a new technique for improved sharpening is introduced which can be used with virtually any image sharpening technique of the user's choice.
Sharpening via techniques such as deconvolution or unsharp mask can increase the DOF in the final image, particularly when the original image has a large DOF. Conversely, image noise reduction can reduce the DOF.
Sharpening...methods and pitfalls.
Sharpen last...or you'll be sorry.
Unsharp Mask.
Traps for younger players.
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My sharpening methodology explained.
Adobe Bridge and Camera RAW basics.
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Photoshop's Unsharp Mask filter does a great job sharpening a soft image. It can't fix an image that is out of focus, but it does add an extra sparkle that makes an image come to life.
Digital EOS cameras assume you're going to be applying sharpening filters to the images once they arrive on your personal computer.
Finally, don't rely on image-editing "sharpening" tools to save images blurred by camera shake. While these tools will increase overall sharpness a small amount, they won't salvage images that are just plain blurry.
Masking the Unsharpness
This is a funny way of saying sharpening. They have their reasons, those technical folks at Adobe. For now, though, we will just concern ourselves with the subtle use of their awesome tool and stop fussing over semantics.
NIH Image supports many standard image-processing functions, such as contrast enhancement, density profiling, smoothing, sharpening, edge detection, median filtering, and spatial convolution with user-defined kernels.
Photography classes can cover just about every subject. Whether you're just interested in sharpening your general knowledge or you want to shoot something more specific, like a wedding, ...
Don’t use sharpening.
Try never to burn your highlights (the histogram is your friend!)
Shoot in low-contrast light (overcast sky, shadow etc).
Learn which situations are likely to increase noise (underexposure, heat, etc).
It is also useful for intermediate photographers who want to learn a few neat tricks for sharpening their skills. For example, it explains how to shoot multiple exposures, or how to set your camera's exposure when using neutral-density filters.
Note: All the image presented below are directly from the camera. No sharpening or other manipulation has been done, other than cropping unless otherwise noted
The Results
Image Center - No TC used - 200% ...
Editing can be used to improve a photo (for example, improving the contrast and then sharpening the image), or can be more extreme (for example, cutting a person out of one photo and pasting them into a different photo).
Lightroom can’t do everything Photoshop CS3 can do, most notably working in layers, adding type or the selective pixel control that you'll use when cloning backscatter, and it doesn't have CS3's sophisticated sharpening capabilities either.
Kernel size
The number of pixels sampled as a unit during image manipulation and sharpening processes.
Search SWPP and BPPA
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More Photographic Terms ...
Finally the image usually requires some kind of sharpening. A process called 'unsharp mask is really the only fifter you require here.
This color space is better suited to many digital image manipulations than the RGB space, which is typically used in image editing programs. For example, the Lab space is useful for sharpening images and the removing artifacts in JPEG images or in ...
 See also: Sharp, Sharpen, Image, Camera, Light
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