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Image Editing & Sourcing Workshop. Scott Haber, Digital Content Coordinator, A&S Communications October 24 , 2017. Introduction & Agenda. Basic definitions Software choices Live Photoshop demo and examples Sourcing/ Finding images Booking/Scheduling University Photograpy Q&A.
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Image Editing & Sourcing Workshop Scott Haber, Digital Content Coordinator, A&S Communications October 24 , 2017
Introduction & Agenda • Basic definitions • Software choices • Live Photoshop demo and examples • Sourcing/Finding images • Booking/Scheduling University Photograpy • Q&A
Definitions: Image Size • Website images are measured in pixels, not inches – device screen and displays sizes vary, so inches aren’t as helpful. • Printed images are measured in inches, since you have an actual physical copy of the image that can be measured.
Definitions: Image Resolution • Resolution = pixels per inch. • Digital images need to be printed at a specific resolution in order to remain sharp and clear at the desired size, whether it’s for a magazine or a wall-sized poster. • Resolution only affectsprinted images, not images on a computer or phone screen. Changing the resolution has no effect on the appearance of that image on a computer screen or phone screen. • High res/low res in terms of web images really means “size” in pixels.
Definitions: Aspect Ratio • Aspect ratio = shape (width:height) • 16:9 and 4:3 are common web aspect ratios, but the numbers don’t tell you a specific image size, just the shape. • A 16:9 image is 1.77 (16/9) times as wider as it is high. • A 3:4 (portrait) image is 0.75 (3/4) as wide as it is high • We crop an image first, before resizing, to get to the desired aspect ratio (shape). • Always try to start with an image that’s the same relative shape of your final image.
Definitions: Resampling • After determining the shape of an image (aspect ratio), we change the number of pixels to make it appear larger or smaller on a computer or mobile device. This is resampling. • Upsampling: taking a small image and adding pixels to make it larger • Downsampling: taking a large image and removing pixels to make it smaller • Always try to avoid upsampling so that images don’t appear blurry/grainy: start with the largest image you can find.
Software: Photoshop vs.? • All Cornell faculty and staff are eligible for a free license to the Adobe Creative Suite (including Photoshop). • If you don’t have Photoshop and want to utilize your free license, contact your department IT support, or me via email. • Free programs/cropping websites?