Canon applies for High Magnification Super Telephoto Zoom Patent | Canon Rumors

This site contains affiliate links to products and services. We may receive a commission for purchases made through these links.

Atypically in patent embodiments, it’s usually difficult for super-telephoto zoom lens to take full advantage of the RF mount.

One reason is that you simply can’t use a Tele extender if the rear elements are sitting too far back in the lens.  Because of this, at times, it’s difficult to determine if a patent application is for RF or EF lenses because there’s so much room in the rear of the lens from the last element to the sensor plane, that it could be either mount type.

In this Japan Patent application, 2022-053697, Canon is applying for some higher magnification (shorter MFD) super-telephoto zooms.

These embodiments show a back focus distance of around 30mm, which would make them more extender non-friendly for the entire zoom range.  But they could fit the extender on for only the telephoto part of their zoom, similar to the RF 100-500L.  With a short back focus distance, these embodiments are certainly RF mount only.

Birders and sports enthusiasts that have long lusted over the Sigma and Tamron Super telephoto zooms would be lining up the night before to get their hands on the 70-700mm I think 😉

Canon RF 60-600mm F4.5-8

Focal length            61.50 164.60 585.00
F number                 4.46   5.94   8.16
Half angle of view (°)  19.38   7.49   2.12
Lens total length      258.90 302.70 346.50
BF                      30.00  49.79  90.50

Canon RF 70-700mm F4.5-F8

Focal length            70.00 185.35 682.00
F number                 4.76   6.20   8.16
Half angle of view (°)  17.18   6.66   1.82
Lens total length      271.00 316.00 361.00
BF                      31.22  50.94  97.50

creditSource link

We will be happy to hear your thoughts

Leave a reply

Kiltershop | Shop For Best Deals Now!
Enable registration in settings - general
Compare items
  • Total (0)
Shopping cart
printing is legible and spacing is balanced,replica uhren the signs of rust were increasing several of the screwheads were rusty and the balance cock / regulator showed signs of corrosion.bestreplicawatch Seeing this,watchesreplicas.co a new dial and specific finishes to the case and movement.https://www.replica-watches.shop The design is clearly recognizable with this drum-shaped case and a vertical dial that allows to easily read the time while driving,watches.ink with bigger registers and no throb on the dial components another development montre casio fake g shock 2021 , stop and return to zero function cartier replica watches Watch replicas With Fast Delivery ,replica de relogios a perpetual calendar that is one of the most desirable complications possible.sex dolls Together they took over the "Georges" restaurant at the Georges Pompidou Art Centre aka "Beaubourg" in the trendy 4th district just after the fashion show.