Canon Patent Application: Super Telephoto 200-1000mm

Richard CR

Richard CR

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Dec 27, 2017
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#1
In this patent application (2024-111453), Canon explores the super telephoto zooms that ended up with the Canon RF 200-800mm f/6.3-9 IS USM. However, there are some other interesting designs in here worth exploring so let's go through them and you'll have to tell me if Canon should have gone for broke and made a 200-1000mm.

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Canon Patent Application: Super Telephoto 200-1000mm

In this patent application (2024-111453), Canon explores the super telephoto zooms that ended up with the Canon RF 200-800mm f/6.3-9 IS USM. However, there are some other interesting designs in here…
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#2
The 200-800 has a lens length of 422mm, whereas the 200-700 and 150-600mm embodiments are 448mm, so that might also make the 200-700 less attractive.

However, the "800mm" is only 776mm, but the 700mm is a true 700mm (699.99mm).

The 200-1000mm would have to have an even larger front element, considering that the 800 (776mm) and the 1000mm (980mm) has the same f/9.18 aperture number.
 
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#3
It is a special lens.
The medium focal length f-numbrr is smaller than wide focal length.
If it is a L lens and near ef400 f4.0 do lens size.
I really want one.
But the size would be larger than 100-500mm f/4.5-7.1L x 2x.
 
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