Someone please correct me if I'm wrong, but is a blur spot an area of the image that becomes blurry due to the fact that a camera can really only focus on objects at one distance? If this is the case is the circle of confusion then a measure of how large an area of the image can be blurred/out of focus without being indistinguishable from a real point?
samparadis
Hi rishiu,
To answer part of your question: the size of the circle of confusion essentially describes how 'blurred' the image will appear. We want to set the focal point to be such that the front depth of field and rear depth of field both have small enough circles of confusion such that the image appears sharp at those depths!
amandaawan
To add onto what @samparadis said, in order for the image to appear sharp at that depth, the circle of confusion seen on the image should be not more than a pixel large.
Someone please correct me if I'm wrong, but is a blur spot an area of the image that becomes blurry due to the fact that a camera can really only focus on objects at one distance? If this is the case is the circle of confusion then a measure of how large an area of the image can be blurred/out of focus without being indistinguishable from a real point?
Hi rishiu, To answer part of your question: the size of the circle of confusion essentially describes how 'blurred' the image will appear. We want to set the focal point to be such that the front depth of field and rear depth of field both have small enough circles of confusion such that the image appears sharp at those depths!
To add onto what @samparadis said, in order for the image to appear sharp at that depth, the circle of confusion seen on the image should be not more than a pixel large.