রবিবার, ২০ মার্চ, ২০১৬

2nd class- Chapter One (Quick Tour of Adobe Photoshop)

We will be learning these topics in this chapter :-
·        - Open and Save image in Ps
·        -  View Image in Ps
·        -  Different parts of the Photoshop working environment
·        -  Photoshop toolbox

Photoshop- CC--> Creative Cloud
                     CS--> Creative Suite


File Formats!
PSD - Native file format (Photoshop document)
GIF -  For web graphics (Graphic Interchange Format)
JPG/JPEG - For web images (Joint Photographic Experts Group)
TIFF - Popular format for print, highest quality (Tagged Image File Format)
RAW - Format for digital cameras. All the data is raw and uncompressed, 20 to 30 mb.



* File Formats that preserve layers in Photoshop
PSD - Photoshop Document (second largest -2)
PDF - Portable Document Format (smallest in size-4)
PSB - Large Document Format (third largest-3)
TIFF - Tagged Image File Format (largest in size-1)
Important!
* The Colour Well
  - know how to change the foreground and background colour.
  - Layers - better to do it in multiple layer
  - not advised to do it all in one layer (difficult to edit again)

* Zoom In and Zoom Out Image
1. Command/Control +/-
2. Command/Control spacebar
3. Select zoom in/out from view menu
4. Changing the percentage value in the lower left corner of the image window
5. Adjusting the scale in the Navigator Palette​​



Pixel:
A pixel (picture element) is a tiny rectangle that contains information about the colour at a particular location in an image.
Each pixel is a specific colour determined by how many bits are used to encode the colours.
- 1 bit = 2 colours
- 4 bits = 16 colours
- 8 bits = 256 colours
- 16 bits = 65,536 colours
- 24 bits = over 16 million colours

Resolution:
- Image resolution in Photoshop is the number of pixels that make up each printed inch of the image.
- The higher the resolution of an image, the more clear and detailed the image looks when it’s printed, at least up to the limitations of the printer.


Three types of resolution:
- Image resolution
- Monitor resolution
- Printer resolution


Image resolution:
- 72 pixel per inch - only for image on digital screen
- 300 pixel per inch - for printing

Relationship between resolution, on-screen size, and print size: 



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