IMAGE BASICS

ß This is a formative assessment instrument
ß You must be rated ‘Competent’ in this assessment item.

Learning Outcomes Learning Outcomes 7 & 8.

Tasks 1) Log on to your workstation using the student login.
a) Name : student Password : student
2) Open the file ‘Img 1 - Ex-02_Image.jpg’ in Photoshop.
3) Select ‘Image -> Image Size …’ and answer the following questions about the image :-

1. Width of the image in pixels
2000 pixels
2. Height of the image in pixels
1500 pixels
3. Calculate the size of the image in megapixels
3 MP
4. What is the specified resolution of the image
300 ppi
5. Width of the image in cm
16.93 cm
6. Height of the image in cm
12.7 cm


7. Width of the image in pixels
2000 pixels
8. Height of the image in pixels
1500 pixels
9. What is the new width in cm
33.87 cm
10. What is the new height in cm
25.4 cm
11. What is the image size in megapixels
3 MP


12. Width of the image in pixels
1000 pixels
13. Height of the image in pixels
750 pixels
14. What is the new width in cm
16.93 cm
15. What is the new height in cm
12.7 cm
16. What is the image size in megapixels
0.75 MP


You can find the information above on the bottom; status line; or window, info: panel options.

1. My image is 2100 pixels wide and 3300 pixels high.
a. What is the image size in megapixels?
2100x3300= 6 930 000
= 6.93 MP

b. What would the physical image size at a resolution of 300ppi?
2100/300= 7 inches or 17.78 cm
3300/300= 11 inches or 27.94 cm

2. My image is 2000 pixels wide and 3000 pixels high.
a. What is the image size in megapixels?
2000x3000= 6 000 000
= 6 MP

b. What resolution would I need to print at to create a 8”x 12” print?
2000/8 inches= 250 ppi
3000/ 12 inches= 250 ppi

3. I want to make an A4 print with a resolution of 300ppi.
a. What is the image size in cm?
21x 29.7cm
b. What is the image size in inches?
8.3x 11.7 inches- round to 8 inches and 11 inches

c. What would the pixel dimensions be?
2400x 3300 pixels

d. What is the image size in megapixels?
2400x 3300= 7 920 000
= 7.92 MP