Only what is bang on that narrow 10cm mark is in focus, and you can see that because the flower’s stem is further away from us, even that is not in focus. You can see this effect in the example below - the flowers right in the foreground have a lowered opacity effect. With a shallow depth of field, you’ll find that parts of the subject that are further away will begin to blur into the background, not completely out of focus but not in focus either.Īnd just like with your eyes, anything very close to the camera will become so defocused that it becomes ‘translucent’. So when you’re doing your fisheye scenes, remember that meaningful depth of field ONLY occurs in wide lenses when the subject is CLOSE, like in your face close.īut the focus doesn’t just cut off and then the background is blurry, there is a transition, a graduation from in focus to out of focus and this is known as focus falloff - the focus, falls off. There’s also a relationship between focal length and depth of field: the longer the lens, generally the shallower the depth of field, whereas wide angle lenses will have a deeper depth of field. However, as we increase the number, going from 35mm, to 85mm, to 150mm etc., the image will become more telephoto, having a narrower FOV and looking more magnified.ĭepth of field is about how much of the image over a distance is in focus but is also relative to how close the subject is to the camera, with closer subjects producing more defocused backgrounds. A fish eye lens, for example, is usually around 6mm, which is why it has an extremely wide FOV and a lot of distortion. The smaller the number (such as 14mm), the wider the FOV and the more extreme the distortion. and the amount of compression that it will render. We're going to get quite technical here, so I'd highly recommend watching the above video - it'll make the most sense! However, for our 'learning by reading' viewers, you can find the most essential info below:įocal length is the most basic description of the lens–it determines a lens’: We’re going to look at what those two terms mean and how we can accurately replicate those effects in our digital art to create a deceivingly ‘photo-real’ look. The two most significant factors in the optical look of a lens would be focal length and depth of field (aka how the lens focuses).
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