This week we also learnt about the different types of camera’s and camera lenses. We learned how the size of the sensor can affect the focal point i.e in a DSLR there is a larger sensor so the focal point will usually be further away. In a enthusiast to semi-pro or even professional cameras the sensor is much smaller so the focal point can be much closer.

We also learned about how ISO/gain and aperture/f.stops have to work with each other to ensure the best focal point possible. By understanding the relationship between the lens, its ISO and aperture capabilities we can have a greater understanding of where and how in depth we would like our focal point to be.

Would we like the subject and its background to be in focus? if so then you would require a higher f.stop which would mean you are allowing less light into through the sensor, and thus may require a higher ISO or greater gain.

If you want the subject to be in focus and the background blurry then it is essentially the opposite with a lower f.stop but since you are letting in more light to the sensor you may need a lower ISO/less gain as well to avoid over exposure.

The relationship between these two is essentially a balancing act since having toomuch ISO or gain can create too much noise within a shot or maybe having everything in focus can distract the audience from the subject.