place your materials to be scanned on the glass scanner bed

choose the type of scan (transparency or image)

hit the preview button

select the portion of the image to be scanned

if necessary, zoom in to fine tune selection

choose the output setting, such as: dpi and final image size

hit the scan or final button

save your file

The process is the same for all scanners.

1. Be sure the scanner is turned on and the ready light is lit.
2. Open Photoshop - in the File menu , choose import, then Twain Acquire. The preview and scanner control windows appear. The scanner and its settings are controlled in the Epson Twain Pro window. The image or slide selection controls are in the Preview window.
Note: The preview window may contain the image of a previously scanned project remaining in it. This is fine. When you preview your materials, the old image will be replaced with your new preview. 3. Setting up the scanner The Epson Twain Pro Scanner Control window contains a number of options to choose from. Which ones you choose will be dependent upon the type of materials being scanned. The choices are available through drop down boxes.
The first set of options is the type of source material. Flatbed for solid materials, like photos, paintings, and books. Neg. Film for photo-negatives Pos. Film for slides.
The second option is for the color depth. 24-Bit Color is the best option for color continuous tone images. 24 bit will give you millions of colors, but Photoshop will not allow you to edit the image in anyway until it is converted to 8 bit color. 24-Bit Color De-screening is for color images that come from printed materials. The de-screening will remove the Moire pattern created during the printing process. 12-bit gray will give you 4,096 shades of gray. 8-bit will give you 256 shades of gray or 16 million colors. Line Art is often the best choice for drawings OCR is for hard copies of text documents that will be converted back to text. In most cases 8-bit Color and 12-bit Gray will be the preferred settings.
The third set if options is resolution, measured in dpi. There are two ways to select output resolution. The first is by typing in the desired dpi in the Resolution box. The other is by choosing from a list of output options located in a drop down box. Choosing one of the options from the list will automatically set the resolution according to the desired output device. Prepress options are for professional publishing. Epson Printer (fine) is 150 dpi Epson Printer (photo) is 300 Laser Priner is 200 Fax is 200 and OCR is 300.
The last are the measurement options. There are some choices to consider when choosing from these options. The two most used settings for measurement are pixels and inches. Select pixel measurement when scanning files for desktop or web presentation. Choose inches for images that will be used in printed documents. The window also displays the physical size of the selection of source material being scanned and the targeted output size of the finished scan. These two settings will be the same unless you change the Output setting, such as; by scaling the selection up, to enlarge a small image (such as a slide) or reducing a large image (such as 8x10 photo).
The Resolution and the Measurement settings work together to give you the final file size. The size and quality of the image is determined by the the total number of pixels. For instance, a 640 x 480, 72 DPI image is smaller than a 640 x 480, 300 dpi image. The setting you choose will depend on the projected use of the scanned image. Compare which image with the one above. The illustration above has been set to enlarge the target image by 50%. The final file size is 740.4 KB. The illustration to the right is set to 100% and is 332.3 KB. For more detailed information about scanning and resolution see...... and ........
4. Previewing an image To preview what's on the scan bed, you must click on the Preview button in the Epson Twain Pro scanner control window.
As the scanner takes a quick pass over your image, the Epson Twain Pro window will move behind the Preview window. Once the preview is completed, a low resolution image will be visible on the screen. Now it’s ready for you to select the portion of the image to be scanned. Note: The Selection Tool is active by default. Just click and drag over the area of the image to be scanned. Preview and Marquee Selection options	fig. a
Preview Options fig.a 1. Once a selection is made, clicking this preview button will zoom in on the active selected area for more fine tuning. The example on the right has 3 selections, the one in the middle is the active selection. The zoomed in view shows that there needs to be some fine tuning made to this selection. Once the selection is adjusted, set the output setting, dpi, scaling, etc. Then move to the next selection.
fig.a 2. Clicking this button will bring you back to the original preview window.
fig.a 3. This button returns to selection preview mode.
Marquee Selection options fig.a 4. Erases the active selection	fig. a
fig.a 5. Automatically selects the whole image on the scan bed.
fig.a 6. Use this selection option if scanning multiple areas of an image or a number of slides fig.a 7. Shows the total number of selections in the preview.
6. Setting the output settings Once the selection is made and while working in the Epson Twain window you will notice that the source and target sizes are the same. If you are working with slides you may want to enlarge the image to fit your needs. There are three ways to enlarge the image. 1. Using the slider arrow, by clicking on it until the number reaches your targeted output size. 2. Using the percentage box, and typing in your desired output size. 3. Typing in the output size in the width and height boxes. Note: Using the slider or the percentage option scales the image proportionally.
7. Final scan Once the image or images are selected and prepared for output you’re ready to make your final scan. Working in the Epson Twain Pro window, Click the Scan Button for a single image or Click the Scan All Button for scanning mutiple selections.
8. Save Your Files The files will open automatically as untitled documents in Photoshop. If the images need more work or processing it’s best to save all the files first and then go back and open them one at a time. This keeps you from losing your unsaved scans should the computer run out of memory or crashes before you have saved all the files.