Our website is made possible by displaying online advertisements to our visitors.
Please consider supporting us by disabling your ad blocker.
Canon Patent Application: Canon RF Super Zooms
Search
Canon Patent Application: Canon RF Super Zooms
MirrorlessReports Admin

Canon Patent Application: Canon RF Super Zooms

Canon has applied for a patent on a various selection of superzooms for the RF mount.

This first one doesn't really quality for a super zoom, it's left a little wanting, but it's still better than 24-104 that we usually see.  This would still be very consumerish even with a constant aperture, with the bolded image circle happening at 28mm.  This means that the image has to be stretched at 28mm to fill the entire full frame.  We'll see this alot in the coming lens examples

Focal length 28.84 80.09 135.75
F-number 4.12 4.12 4.12
Half angle of view (deg) 33.13 15.12 9.06
Image height 18.82 21.64 21.64
Total lens length 167.97 167.97 167.97 
BF 27.78 27.78 27.78

Now we get into what I would call a super zoom, with a zoom ratio of 6.73x, and still with a constant aperture.

Focal length 24.72 99.78 166.47
F-number 4.12 4.12 4.12
Half angle of view (deg) 37.29 12.23 7.40
Image height 18.82 21.64 21.64
Total lens length 236.70 236.70 236.70 
BF 23.98 23.98 23.98

This next one is most likely for the EF-S mount since the backfocus distance is around 40mm (the EF mount is around 44mm, and EF-S can be a little closer to the sensor than 44mm).  Interestingly, is the image height. Usually, from Canon that is 13.66, and again we see stretching at the wide end.

Focal length 17.51 83.09 169.77
F-number 3.61 3.60 3.61
Half angle of view (deg) 36.33 10.10 4.98
Image height 12.88 14.80 14.80
Total lens length 248.91 248.91 248.91 
BF 40.40 40.40 40.40

Remember when I said there were some neat super zooms in this list? Well, here's one.  A F2.8 super zoom. Made not for the EF mount, and is full frame.  It's not small at nearly 31cm in length, but still. 28-280cm F2.8

Focal length 27.81 146.83 269.60
F-number 2.88 2.88 2.88
Half angle of view (deg) 34.09 8.38 4.59
Image height 18.82 21.64 21.64
Total lens length 340.47 340.47 340.47 
BF 32.97 32.97 32.97

US Patent Application 20190369372


This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee.
Previous Article Canon Patent Application: Fast Primes for the Canon RF mount
Next Article Design details of the Nikon Battery Grip MB-N10
Print
Rate this article:
No rating
Please login or register to post comments.

Theme picker

Search

Categories

Our Sponsors


Use MREPORTS for $10 off AuroraHDR


Use MREPORTS for $10 off Luminar


Use MREPORTS for 20% off PhotoLemur

Terms Of UsePrivacy StatementCopyright 2021 by Mirrorless Reports
Back To Top