Canon’s new 600mm and 800mm lenses

Started 3 months ago | Discussions thread
Jack Hogan Veteran Member • Posts: 7,493
Re: DoF of Canon’s new 600mm and 800mm lenses

bclaff wrote:

Jack Hogan wrote:

bclaff wrote: What is CLC?

Circle of Least Confusion, the precise figure used in further calculations when a range is available. How do you calculate it?

I don't but could.

I would need to do more rays than are shown here and report the maximum value; right?

Extreme close-up of on-axis rays near the image plane

Maximum energy would make more sense than maximum amplitude, which would correlate with MTF. I see that Alan has provided a list of available alternatives for criteria to be used.

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