Reconciling the Thick Lens Model with P2P Optical Bench

Started 4 months ago | Discussions thread
bclaff Forum Pro • Posts: 12,454
Re: DoF estimates

Bernard Delley wrote:


The function f(s) shows a lot of variation. For example the 70-300mm zoom shown in my first post goes down from 300mm to 174mm at MFD.

I assume specifically the Nikon AF-S Nikkor 70-300mm f/4.5-5.6G VR in your gear list?


As I showed in a thread with illustrations gone now estimating DoF becomes more simple when calculating it from the magnification ratio, rather than from the distance. ...

Totally agree. Magnification is how I derive the equations and use DOF in the field.
It's not only focal length independent but I find estimating magnification much easier than estimating distance.


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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

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