Friday, November 11, 2011

Image Clarity and File Type

Recently I had to concert an image to use on a website, but also aon some advertising merchandise. I chose to go with the png file type as the loss of detail in compression is the least of the regular image formats.It was an image to be used over at a site about jovvy caboose strollers.

Its always difficult to know which format to choose, particularly if you need to have some transparency involved.

Wednesday, February 14, 2007

Black and White Photo Conversion (Ezine Ready)


Author: Peter Horner

Copyright © 2006 Peter Horner
Most images were produced in black and white for nearly a hundred years after the invention of photography, but now colour images have become commonplace. Creating strong three dimensional images on a piece of paper is one of the best attributes of black and white photography, as the effect can be more striking than with a colour photograph. Without the colour to distract us we become more aware of the subtle tones which can be found within a black and white image. In this article I will share the technique I use that will help you create beautiful, striking and moody black and white images from your colour photographs.

Digital cameras have a black and white mode but more information and detail will be recorded in colour, which will also create a higher quality printed image. This is why I always shoot in colour then convert images later. There are several ways of converting an image to black and white using Photoshop and many other image editing programs. You could simply desaturate the colours, but creating a black and white image with real tone and definition goes beyond this. Levels, curves and the Unsharp Mask can be used creatively with black and white conversion to provide further control over tones and contrast to create a stunning image.

Channel Mixer - I have found that using the Photoshop Channel Mixer is the easiest way to convert an image to black and white and produces the best results. The Channel Mixer allows you to control how much red, green and blue contribute to the final monochrome image.

The Channel Mixer can be selected from the adjustment layer popup menu in the layers palette or you can also access it from under the image menu.

Clicking on the left tick box entitled Monochrome will convert your photograph into a greyscale image, and gives you the ability to blend the red, green and blue channels. Adjust each of the sliders to produce an image to your liking. As a rule make sure that the total values for each channel adds up to 100%. This creates monochrome images that are the equivalent of ones shot on black and white film through red, green or blue filters. For example if you wanted to maximize cloud contrast in a blue sky, then a red filter would achieve this. I usually set the red channel to 0 and the green channel to 100 to cut down on the amount of noise, or sometimes a combination of red and green depending on the image.

Curves and Levels - Brightness and contrast can be adjusted in Photoshop by using the curves and levels tools, which can be found under Image > Adjustments Curves/Levels. Both curves and levels allow you to adjust the tonal range of an image. When using the levels command you can make adjustments to just three variables, highlights, shadows and midtones. I prefer to use curves as it gives you more precision. With curves you can adjust any point along a scale while keeping up to 15 other values constant. By adjusting the black point and white point in curves you can give your image more contrast. At opposite ends of the diagonal line you will find a small dot. When you grab hold one of the dots with your mouse and drag it around you will see the image change. To create more contrast drag the black point lower and the white point higher, so that either end of the diagonal line is curved. Practice using curves and levels and explore the different effects you can achieve with your images.

Unsharp Mask - The Unsharp Mask is my preferred tool for sharpening images, which can be found under Filter > Sharpen > Unsharp Mask. It is a traditional film compositing technique used to sharpen edges in an image and corrects blurring. The Unsharp Mask locates pixels that differ from surrounding pixels by the threshold you specify and increases the pixels' contrast by the amount you specify. In order to get the look which I desire in my images I use the Unsharp Mask twice. I begin by using a high radius and lower amount, such as a radius of 50 pixels and an amount of 30%. This gives the image a much more intense look and details will stand out. The second time I use a lower radius of 1 pixel with a higher amount of 30%, which will correct any blurring and sharpen the image.

Visit this page to view examples of images created using a combination of these techniques - Black and White Conversion Example Photos



Source: Free Articles from ArticlesBase.com



About the Author:

Peter Horner has years of experience in photography and digital printing technologies and also co-created the large format printing company DesignerPrint. Using large format printing technology DesignerPrint create canvas prints, block mounts, and poster prints. Canvas Printing from DesignerPrint.co.uk


Digital Image Formats - JPEG, GIF, RAW .. What Do All These Mean? (Ezine Ready)


Author: Mike Singh


We spend hours and hours, taking the best photographs we can, and when we're done - we apply special techniques to them with a special editing software to enhance what we've originally seen. When we are done, we try and save them in the correct format to preserve the image in the best way possible, but most people have no idea what the differences are.


The three main files a digital camera uses to store its digital images are JPEG, TIFF, and RAW formats. We need to understand what these digital image formats are and their properties - only then will we be able to get a high quality photograph.


The first format, and the one used in graphic design and photography quite often, is JPEG - a commonly used standard method of compression of images. In fact, the majority of photographers use this as their primary image mode. One of the main reasons is because it can be used right out of the camera with no editing, as it is considered a high-quality first use image. It also transfers easily across the Internet, and as email attachments. Plus it is fastest writer from the camera memory buffer to the memory card storage.


On the other side, it is not as sharp out of the camera as TIFF or RAW modes, and every time the JPEG is manipulated more than once or twice, it will eventually become unusable. But more than any of this, every time the JPEG image is modified and resaved, it will lose more data.


PEG stands for "Joint Photographic Experts Group", named after the joint committee which created it in 1986. The JPEG (file extensions are .jpg, along with .jpeg, .jfif, jpg., .JPG, and .JPE) format provides for lossy compression of images, which means that when data is compressed, and then decompressed, the data that is decompressed may be different than the original. Yet, it is sufficient to be useful in some way or another.


JPEG/JFIF is the format that is used when photographs are stored and transmitted on the Internet. It is preferably over GIF, which is limited to 256 colors that are not enough for colored photographs, or PNG, what produces larger image files.


But then, just as many photographers use TIFF as their primary usage. The TIFF is a file format used for storing images such as line art and photographs, developed by Aldus, now Adobe Systems, and Microsoft. A popular format for high color depth images, it is supported by many image-manipulation programs such as Pagemaker, QuarkXPress, Adobe InDesign, PhotoShop, Paint Shop Pro, etc. It is extremely high in its image quality, with excellent compatibility with the publishing companies.


Tiff can be modified and resaved, with the images being used an endless number of times without throwing away any image data. Plus the image is extremely usable, as it does not require software post-processing during or after its download from the camera. It is a flexible and adaptable , with an advantage of no picture loss, which makes it acceptable to the publishing industry.


Compared to the RAW format, it uses less storage space, and is suitable for changes from any photo-editing software. A big disadvantage is its very large file size, still choking small e-mail boxes. During photography shoots, memory cards are needed if using TIFF images, but more pictures can be taken with the same amount of memory space.


The RAW mode is a picture format where the camera has made absolutely no changes; the files are not yet processed or ready to use with an editor, etc. Not a whole lot of professionals use this mode, other than camera purists, or weird website article writers. In order for it to be manipulated, the image needs to be processed and converted to an RGB format that is either TIFF or JPEG. This means that each and every pixel that was captured by the camera is now on the image.


You can now download this image on your computer for processing. Its advantages are that a huge amount of control over the final look of the image is yours. Additionally, all original details stays in the image for any and all future processing needs.


However, when you do so you will notice that this is a very large image, probably a few MBs. This means that you will need a very large storage area or memory space if you are going to shoot images in RAW format. Your advantage is that you can sharpen, size, or crop the picture without losing any picture quality.


But your disadvantage is the file size. You cannot transmit it easily because it needs high bandwidth connections. Also, you can shoot very few photographs if you select the RAW mode. After that, you have to change the memory card or make space by erasing a few photographs. Also, this mode is generally not accepted by the publishing industry because it produces a 12-bit image. The photographer needs to modify it using photo-editing software before submitting it for publication.


Overall, if a photographer wants to keep all the original image data that was recorded, the image must be stored in RAW format. It is the closest thing that we will be able to see in a film negative or a transparency that the digital camera can make.




Source: Free Articles from ArticlesBase.com



About the Author:

Check out http://www.digicamland.org/ for more articles on buying digital camera and digital camera batteries.

Friday, February 9, 2007

Ramblings From a Glass Half Full: Lookin' for (Link) Love

Ramblings From a Glass Half Full: Lookin' for (Link) Love

The Z List...try it.

I'm new to blogging, and like you all, want to increase traffic. I spotted the Z List on The Viral Garden
Don,t know the full deal yet, but it will follow things through a bit.
I'm also unsure if these pasted links qualify as bona fide "links". Heres hoping.
To use the link list, cut and paste the links into a new post on your blog. Add 5 or so of your favorite blogs and publish the post. Hopefully one of the links will be to this site!! Hope it helps all to get some comments and traffic!


The Viral Garden
Creative Think
Soloride
Movie Marketing Madness
Blog Till You Drop!
Get Shouty!
One Reader at a Time
Critical Fluff
The New PR
Own Your Brand!
OTOInsights
bizandbuzz
Work, in Plain English
Buzz Canuck
New Millenium PR
Pardon My French
Troy Worman's Blog
The Instigator Blog
AENDirect
Diva Marketing
Marketing Hipster
The Marketing Minute
Funny Business
The Frager Factor
Mindblob
Open The Dialogue
Word Sell
Note to CMO:
That's Great Marketing!
Shotgun Marketing Blog
BrandSizzle
bizsolutionsplus
Customers Rock!
Being Peter Kim
Pow! Right Between The Eyes! Andy Nulman’s Blog About Surprise
Billions With Zero Knowledge
Working at Home on the Internet
MapleLeaf 2.0
darrenbarefoot.com
Two Hat Marketing

The Engaging Brand
The Branding Blog
CrapHammer
Drew's Marketing Minute
Golden Practices
Viaspire
Tell Ten Friends
Flooring the Consumer
Kinetic Ideas
Unconventional Thinking
Buzzoodle
Conversation Agent
The Copywriting Maven
Hee-Haw Marketing
Scott Burkett's Pothole on the Infobahn
Multi-Cult Classics
Logic + Emotion
Branding & Marketing
Popcorn n Roses
On Influence & Automation
Bullshitobserver
Servant of Chaos
converstations
eSoup
Presentation Zen
Dmitry Linkov
aialone
John Wagner
Nick Rice
CKs Blog
Design Sojourn
Frozen Puck
The Sartorialist
Small Surfaces
Africa Unchained
Perspective
gDiapers
Marketing Nirvana
Bob Sutton
¡Hola! Oi! Hi!
Shut Up and Drink the Kool-Aid!
Women, Art, Life: Weaving It All Together
Community Guy
Social Media on the fly
Jeremy Latham’s Blog
SMogger Social Media Blog
Masey.com

Blogsvertise can help you earn some $$$

Consider signing up with Blogsvertise (http://www.blogsvertise.com) Its free, and can attract paying advertisers to your site

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