Scheme of works for using a scanner, digital camera and Photoshop Course spring 2004

 

 

Lesson 8

 

Introduction to scanning images

Quick history of scanners

Mention hand held - including pen scanners -, drum and flat bed - also pass through (such as fax machines) .

Mention different interfaces, different pass modes, speeds, and extras such as slide / film negative functions, sheet feeders, expandable tops.

"Resolution and bits". Interpolation

Uses. make a lst with the group of uses.

 

What is TWAIN

TWAIN is a widely-used program that lets you scan an image (using a scanner) directly into the application (such as PhotoShop) where you want to work with the image. Without TWAIN, you would have to close an application that was open, open a special application to receive the image, and then move the image to the application where you wanted to work with it. The TWAIN driver runs between an application and the scanner hardware. TWAIN usually comes as part of the software package you get when you buy a scanner. It's also integrated into PhotoShop and similar image manipulation programs.
The software was developed by a work group from major scanner manufacturers and scanning software developers and is now an industry standard. In several accounts, TWAIN was an acronym developed playfully from "technology without an important name." However, the TWAIN Working Group says that after the name chosen originally turned out to be already trademarked, an 11th hour meeting of the group came up with TWAIN, deriving it from the saying "Ne'er the twain shall meet," because the program sits between the driver and the application. The name is not intended to be an acronym.

Digital Camera section

Macro mode

Composition : Positioning of the horizon line - Angle And height.

 

 

Panoramic shots

Using the crop technique


Panoramic camera or special lens? No just a crop of the image below

 

 

 

The canvas size function in Photoshop allows you to make more space around an image so you can insert images next to it.So for example this technique can be used for panoramic images as you can see below.

 

 

Photoshop Section

 

The history tool - Don't forget it!!!

The Canvas Size and image size

Introduction to panorama pictures - using either the crop feature or putting two or more pictures together

A quick introduction to Filters


Here's an example of the "motion blur" filter


Here's a picture after the Watercolour filter has been applied

 

 

 

End of lesson 8

Extra for previous term's students

 

Gradient masks

Layers - advanced

 

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