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To stack or not to stack

Started Sep 26, 2019 | Polls thread
mawyatt2002
mawyatt2002 Contributing Member • Posts: 502
Re: Larger DOF with larger sensors (not a typo)

Pixel Pooper wrote:

mawyatt2002 wrote:

Just a note, don't think the Circle of Confusion is affected by the angle, it's just an arbitrary level of focus acceptance (and confusion) that folks have decided to use. In Fig 17 the CoC is constant but then cone angle is quite different, and thus the DoF is much different.

The circle of confusion is the blur circle created by the cone of light. The wider the angle of the cone, the larger the circle of confusion at any given distance from the focal plane.

My point being that CoC is a value (~0.03mm for 36mm FF, ~0.018mm for APC )  determined by other factors, the cone creates a blur circle the CoC defines the acceptable limit of such.

From Wiki, "In photography, the circle of confusion (CoC) is used to determine the depth of field, the part of an image that is acceptably sharp. A standard value of CoC is often associated with each image format, but the most appropriate value depends on visual acuity, viewing conditions, and the amount of enlargement. Usages in context include maximum permissible circle of confusion, circle of confusion diameter limit, and the circle of confusion criterion."

Best,

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