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RF 300mm f/2.8 IS

Started 6 months ago | Discussions thread
John Sheehy Forum Pro • Posts: 26,698
Re: RF 300mm f/2.8 IS

Victor Engel wrote:

https://www.canonrumors.com/patent-canon-rf-300mm-f-2-8l-is-1-4x-plus-other-supertelephoto-optical-designs/

A glaring detail to me on that page is the image height. I guess this lens is for crop cameras only? With a lens that size, it seems it would make more sense to make it a full frame lens.

That link is just giving me a spinning circle, so I can't read it right now, but as far as I understand, there is little that can be done to optimize a 300mm lens for APS-C vs FF.

Maybe specs were given based on APS-C?  That "1-4x"; is that a built-in TC?  That could explain it.

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Beware of correct answers to wrong questions.
John
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