Digital Photography and the Web By: Emily Hanna 11-4-13
DIGITAL PHOTOGRAPHY A digital camera captures images using pixels, the small squares of color you see on your computer screen. The standard resolution for digital images is 72 (72 pixels per square inch). Digital cameras are taking bigger and bigger pictures as they evolve. While this is good for the quality of the image, it is not practical to use these raw images on the web without editing them because of the large file size.
Ratio and megapixels
The image quality setting on you camera determines the file size of the image taken by the camera, find the image quality setting on you camera it is located under the MENU. You will see the options for ratio and megapixels. A 4:3 ratio means that the ratio of width to height of the image is 4 to 3, this is shaped like a regular monitor. A 16:9 ratio means that the ratio of width to height is 16 to 9, this is shaped like a wide screen monitor. Mega pixels are used to measure the resolution in digital cameras.
HOW TO DOWNLOAD IMAGES FROM THE CAMERA You can manually downsample images when you download from your camera into your computer. Downsampling means reducing the number of pixels to reduce the actual size of the image and the file size of the image. phones can downsample images before sending them to email, text messages or posting online you should edit and optimize digital images to load quickly with a reasonable size before using on the web. Images should be less than 8000 pixels wide or 7000 pixels tall resolution should be 72.
ZOOMED IN PICTURE TO SEE THE PIXELS
This is a zoomed in of a scarecrow to show the pixels which are the little color boxes that you see on your computer screen
Save for web feature in photoshop
Save for web is a feature available in adobe Photoshop the optimizes images for use on the web. You can choose the file type(.jpg, .png, .gif) and the actual size of the image Photoshop automatically reduces the file size to a chosen quality( maximum, high, medium, low) to improve loading time, and automatically changes the resolution to 72.
Screen shot of images before resized and after
Best practice for naming digital images All file names should never be lowercase There should be 3 things included in the file name. 1. what is it( the name of the assignment or topic) 2. when was it taken(semester or year) e.g.F2013 3.who took it(your last name or initials) The parts of the file name should be separated by dashes to prevent white space Dashes are preferable because underscores do not show up in link.(these-are-dashes) and (these_are_underscores) White spaces in file name will be filled in with%20
Pictures
Sources
N.d. Photograph. Http://www.englishonline.at/news-articles/technology/digital-camerahow-it-changed-photography.htm. Web. 5 Nov. 2013. <http://www.english-online.at/newsarticles/technology/digital-camera-how-it-changedphotography.htm>. Canon IXUS 240 HS Wi-Fi Digital Camera Review." Canon IXUS 240 HS Wi-Fi Digital Camera Review. N.p., n.d. Web. 05 Nov. 2013. <http://www.ephotozine.com/article/canon-ixus240-hs-wi-fi-digital-camera-review-18984>. Basic Facts of Best Digital Cameras." Basic Facts of Best Digital Cameras. N.p., n.d. Web. 05 Nov. 2013. <http://www.freekv.com/photo-printing.html>. Nikon COOLPIX S6500." Nikon COOLPIX S6500 Online Price in India, Specifications, Reviews, Features : Digital Cameras. N.p., n.d. Web. 05 Nov. 2013. <http://compareindia.in.com/specification/digitalcameras/nikon-coolpix-s6500/312422>.