Canon’s new 600mm and 800mm lenses

Started 3 months ago | Discussions thread
bclaff Forum Pro • Posts: 10,490
Re: Canon’s new 600mm and 800mm lenses

AiryDiscus wrote:


No, it doesn't simplify the lens design. My guess is that they use the front element as a stop, much as a telescope, so there is no stop at all (could be wrong). ...



(Example 3 is the 780mm lens)

Unfortunately I still haven't taught the Optical Bench to do diffractive elements

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

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