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Lens Focal Length Perspective

The Art & Science of Filmmaking | Focal Length Perspective

Focal Lengths of the camera lens change the physical perspective of the image not just increasing the possible range, so it has different uses for filmmaking & Photography.

In this video I will be showing how the image will change from a wide Angle to super telephoto using the same frame which is on actress Rea White in a beautiful field of Yellow Flowers in Hertfordshire, England.

The main physical image changes will be in the background and slightly more subtle changes to Rea's face reshaping and shoulder broadness. The widest lens used was an 18mm which does not have so much distortion so won’t be as extreme as wider lenses on Rea's face, as for example a wider 10mm or super wide fish eye lens which can capture around 180 degrees uses a concave lens form in order to achieve the wider scope which in turn will noticeably distort objects closet to it.

The manipulation of the image with these different focal lengths in cinematography is utilised to tell the story whether its for an isolated look i.e. wide angle close up which pulls the subject close into the camera and pushes the background away or the opposite where the subject is filmed at a distance with a telephoto lens which pulls the background into the camera and fills the frame while making the subject more flat, widening the shoulders and jaw and creating a more shallow depth of field even in higher f stops. I.e. F5.6 at 600mm will look more shallow than F1.1 at 18mm.

The normal focal range to what the eye actually sees is around 42mm with a full frame sensor and one of the most commonly used medium for film often 35mm - 50mm. This offers less distortion of the image and is a decent focal range to work with in most room sizes and good for all type of shots.

This is part of my 'The Art & Science of Filmmaking'

series and I will be making more frequent videos and the next subjects covering Aperture, shutter speed and frame rates maybe as one video or separate. As the year goes on I will move on to other subjects such as camera movements i.e. with a gimbal, slider and handheld and when is best to use certain shots. Lighting will be a subject that is vastly important to filmmaking so this is certainly be explored in the series. Many many more areas of filmmaking so stay tuned by subscribing and catch you on the next one.

The full video is on my Channel so check that out for more detail for you interested fellow filmmakers.

If you liked the video or found it helpful drop a like and subscribe for more videos to come.






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