Everyone noticed when taking a photo with a digital SLR camera in which the subject stands out very well and the background is blurred, small circles usually appear in the parts with more lighting, yes the bokeh effect, this is one of the most beautiful effects and easy. get. do. Bokeh works best on lenses with a larger aperture, which has better light capture, bokeh usually comes in the form of circles and sometimes hexagons, but did you know that you can leave it as you wish? But how do you do that? We will see below. There is a small and simple calculation to do, but before the calculation you will need a few things, obviously a DSLR camera, as well as a black card and a compass to be more precise in the measurement. In this example, I’ll be using a 50mm lens with a 1. 4 aperture. The lens I used to make has a filter size of 58mm, so I’m going to circle the cardboard with the same size (measure the compass at 29mm). Cut out the circle made with the compass, as round as possible. This is where the math comes in. Take the focal length of the lens (50mm) and divide it by the aperture (f1. 4), so it looks like this:
Lens 50 mm / f1. 4 – 35. 7
- This means that the shape of the drawing in the center of the circle can only exceed 35.
- 7 mm.
- Remember that this measurement varies from lens to lens.
- Reinforcing that I used as an example a 50 mm with an aperture of 1.
- 4.
It is recommended that these bokeh shapes be made with fixed focal length lenses, as they have a larger aperture that lets in more light and therefore causes bokeh to exist.
In the example in the image, the shape of the bokeh is that of the heart, but your creativity is the limit, as long as the measurements are respected, see below what the layout of the summary was like and also the result: