The document discusses various lens specifications, focusing on focal lengths, aperture values, and their impact on exposure times and depth of field. It highlights how different aperture settings (ranging from f/32 to f/2.8) affect the depth of field and the corresponding exposure durations required for optimal lighting. Key points include distinctions between large, medium, and small apertures and their relationship to depth of field in photography.

1. BodyLens

2. 50 mm focallenght

3. 100 mm focallenght

4. Large aperture lensShort depthoffieldLensdiameterAperture value (2, 4, 5.6..)=FocallenghtExposuretimelight on sensor=Small aperture lensLong depthoffield(Aperture value)2

5. Minimum aperture value (f/32)Exposure 15 s (!)maxdepthoffield

6. Very low aperture value (f/22)Exposure 8 sVerylargedepthoffield

7. Low aperture value (f/14)Exposure 3.2 sLargedepthoffield

8. Medium aperture value (f/8)Exposure 1 sintermediate depthoffield

9. Large aperture value (f/5.6)Exposure 0.5 sshort depthoffield

10. Verylarge aperture value (f/3.5)Exposure 0.2 sVery short depthoffield

11. Max aperture value (f/2.8)Exposure 0.125 sMinimum depthoffield