Canon Patent Application: Fast Focusing Prime lenses

[Richard CR]

In this patent application, Japan Patent Application 2023-120952 Canon discusses developing lenses for video, surveillance, and stills photography that have very quick autofocus. The method they use for this is reducing the weight of the focus group to allow for quicker focus. There are a few embodiments that look cool – but the back-focus distance

See full article...

 

[koenkooi]

The 24/35/50mm f/1.4 examples feel like Canon is trolling us with these patent applications

 

[photophil]

"Don't do that. Don't give me hope"

 

[Skux]

It's happening folks let's gooooooo

 

[masterpix]

RF50mmF1.4.. that would certainly sit in my bag should it be made, I have the EF one but it is not as good with the R5.

 

[EOS 4 Life]

Just because the back focus is smaller than the flange distance does not necessarily mean the rear element will protrude into the mount.
They can extend the length of the lens a few mm.

 

[GMCPhotographics]

It would be very sweet if the three L RF lenses are all F1.2 and the Silver ring STM's are all F1.4

 

[neuroanatomist]

The 24/1.4 example fills the image circle (as do the others). Most of the recent wide angle lens patents that have become products do not. That makes me think this more about technology than actual lenses.

 

[Elgogo]

It's happening folks let's gooooooo

Let's go where?

 

[Richard CR]

The 24/35/50mm f/1.4 examples feel like Canon is trolling us with these patent applications

I can't count how many times looking / reading and publishing about Canon patent applications over the last 5+ years I have thought this exact same thing

 

[Richard CR]

The 24/1.4 example fills the image circle (as do the others). Most of the recent wide angle lens patents that have become products do not. That makes me think this more about technology than actual lenses.

or they heard my whining about it

 

[Del Paso]

The 24/35/50mm f/1.4 examples feel like Canon is trolling us with these patent applications

These patents will make many forum trolls unhappy...

 

[Maximilian]

I really wonder, of those patents will become RFs.
Somehow I hope those to become true

 

[Snapster]

How fast can a patent turn into mass production? I'll pre-order the 35 now. It needs an 85 buddy, too. Drifting off in sweet, sweet delusions.

 

[Exploreshootshare]

How fast can a patent turn into mass production? I'll pre-order the 35 now. It needs an 85 buddy, too. Drifting off in sweet, sweet delusions.

For most of our forum members: not fast enough unless Canon announces all three lenses tomorrow

 

[neuroanatomist]

How fast can a patent turn into mass production?

Sometimes almost immediately, since by the time we see it 18 months have elapsed since it was filed (or longer if there was a provisional filing). But most of them never enter production.

 

[EricN]

Sometimes almost immediately, since by the time we see it 18 months have elapsed since it was filed (or longer if there was a provisional filing). But most of them never enter production.

I haven't been paying attention very long, but if it's going to happen, don't they usually announce it officially within a week or two?

 

[neuroanatomist]

I haven't been paying attention very long, but if it's going to happen, don't they usually announce it officially within a week or two?

Historically, it varies a lot.

 

[EricN]

Historically, it varies a lot.

That does make the rumoring more fun

 

[Stig Nygaard]

Personally I'm more curious about a patent application mentioning (APS-C?) designs for 10-21mm f/2-2.8 and 11-28mm f/2-2.8 wideangle zooms, though I'm not sure they are meant for consumer RF mount cameras (Richard?):

キヤノン「10-20mm F2-2.8」「10-30mm F2-2.8」光学系に関する特許出願

2023年8月30日付けでキヤノンの気になる特許出願が公開。「10-20mm F2-2.8」「10-30mm …

asobinet-com.translate.goog

If it is an APS-C design, the 10-21mm would be an interesting option for me (the other wouldn't be wide enough to replace my current EF-S wideangle zoom).