1. Camera Obscura circa 1750

2. Room Size Camera Obscura, San Francisco California

3. Joseph Nicéphore Niépce 1826

4. Boulevard du Temple, Paris, Louis Daguerre in late 1838 or early 1839

5. The Crystal Palace at The Great Exhibition, by Philip Henry Delamotte, 1854

6. Roger Fenton's photographic van, circa 1855

7. Photographer’s Studio circa 1895

8. Eastman Kodak Brownie Camera, circa 1900

17. Speeds faster than 1 second are fractions of a second and most cameras display them without the numerator. For example, 1/2 second is displayed as 2.
Speeds of 1 second or slower are whole seconds and many cameras indicate them with quotation or inch marks ("). For example, 2 seconds is displayed as 2".

18. Standard Shutter Speeds:
1/4 1/8 1/ / / / / / /1000
Standard f-stops:
Shutter Speed
1/ /15 1/30 1/60 1/125 1/250 1/500 1/1000
f/stop
f/32 f/22 f/ f/ f/ f/ f/4 f/2.8

19. Sensor Sensitivity aka ISO or ASA

20. Depth of Field Example

21. Rule of Thirds Example