Egami (translated) spotted a patent filed by Canon, for a 35mm f/1.4 lens.
The EF 35mm f/1.4 is rumoured to get replaced soon. The patent may well refer to the upcoming 35mm lens.
Egami (translated) spotted an interesting patent filed by Sigma. It refers to a 400mm f/2.8, image-stabilized lens. This lens will be part of Sigma’s “Sport” line-up.
Egami (translated) spotted a patent filed by Canon for an image processing algorithm that corrects lens vignetting by varying the exposure time according to the image height, i.e. applying different exposure times to different spots in the image area.
One thing to note, in my opinion: this patent implicitly also refers to a new sensor tech. Some excerpts from the patent description:
The present invention relates to the control method of the imaging device which has an image sensor in which exposure control is possible for every region, and the Method of amendment of an image.
In the imaging device which photos an object by acquiring an optical image via a lens, in the image of the photoed object, what is called a light-falloff-at-edges phenomenon in which light volume is deteriorated occurs as it goes to an image periphery from the central part of the image.
It is known that a light-falloff-at-edges phenomenon will be decided by the relation of the characteristic of the lens with which an imaging device is provided, and the characteristic of a solid state image pickup device. Specifically, it is a relation with the position of the solid state image pickup device to an effective image circle (region where light hits uniformly), and the amount of light falloff at edges is decided uniquely. However, it will be the requisite that the effective pixel center of a solid state image pickup device and the optical axis center of a lens are corresponding in this case. It is dependent also on the f-stop of a lens, and the amount of light falloff at edges has an omission condition of light volume remarkable in the opening and small diaphragm side. In the opening side, although the incident light in a lens center enters as a general lens characteristic with circular light flux, since the incident light in the corner of a lens always passes along the corner, light will be kicked, incident light becomes the light flux of elliptic form, and light volume is deteriorated.
What do you think?
Will this patent (spotted by Egami) ever hit the market? If it does it will probably yield a new Powershot camera with a wobbling 100x zoom. The patent refers to a 1/2.3″ sensor and an equivalent focal length of 24-2400mm.
Do you think Canon will produce a Powershot with a 100x zoom anytime soon?
Egami (translated) spotted a patent for two Cinema lenses, a 12-32mm T3.5 and a 15-47mm T2.8 lens.
Egami (translated) spotted a patent for an EF-M 9-18mm f/3.5-4.5 STM lens for the EOS M system. A bit weird since there is already the excellent EF-M 11-22mm f/4-5.6 IS STM lens. I guess this is just one of the many patents Canon is filing and not a lens that will hit the market anytime soon.
Notice
This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. If you want to know more or withdraw your consent to all or some of the cookies, please refer to the cookie policy.
By closing this banner you agree to the use of cookies.