Patent for Canon EF-S 100-300mm f/4-5.6 IS lens revealed

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Patent for Canon EF-S 100-300mm f/4-5.6 IS lens revealed

Canon has patented a new EF-S-mount lens in the body of the 100-300mm f/4-5.6 telephoto zoom featuring a built-in optical image stabilization system.

Another lens has just been patented by Canon in the company’s home country. The latest patent to come out of Japan consists of an EF-S-mount 100-300mm f/4-5.6 IS telephoto zoom lens.

The company has patented a number of optics in recent times. All of them are quite interesting, but this one stands out as it would become the perfect tool for wildlife and action photographers in combination with the EOS 7D Mark II DSLR.

Canon EF-S 100-300mm f/4-5.6 IS lens patented in Japan

The patented Canon EF-S 100-300mm f/4-5.6 IS lens has been designed for EOS-series DSLR cameras with APS-C-sized image sensors, such as the aforementioned 7D Mark II.

Although the specifications of its internal configuration have not been leaked, a sketch of the construction is present and it seems like there are about 16 or so elements split into about 10 groups.

Canon EF-S 100-300mm f/4-5.6 IS patent
The internal design of the Canon EF-S 100-300mm f/4-5.6 IS lens, as seen in its patent application.

This configuration is complex, but it would have been even more so if it had had a brighter aperture. Nevertheless, it offers 3x optical zoom with a 35mm focal range equivalent of 160-480mm, so the aperture can be considered fast enough.

Being a telephoto zoom lens, it will be welcomed with open arms by action, sports, and wildlife photographers. In order to counteract camera shakes, the optic comes with an integrated image stabilization technology. The system will also be useful in low-light conditions, where photographers will be able to shoot with quick shutter speeds without blur showing up in the photos.

This model would become the lens with the longest focal length in the EF-S line-up

Canon filed for the patent on January 23, 2014. The publication of the patent occurred on July 30, 2015. It is worth noting that the timeframe, between the filing and approval, is normal, so it is hard to say anything about the status of this project.

The Canon EF-S 100-300mm f/4-5.6 IS lens is only in development for the time being, meaning that we have to take into consideration the possibility that it may never be released.

Still, it would be interesting to see this being launched on the market for the sake of a longer focal length. The EF-S-mount optic with the longest telephoto focal length is the 55-250mm f/4-5.6 IS STM, which is available at Amazon for about $300.

It would be great to see this product becoming official, so stay tuned to find out how this story unfolds!

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Patent for Canon EF-S 100-300mm f/4-5.6 IS lens revealed