Canon will be announcing two new “big white” lenses ahead of Photokina in September. While we do not know the exact focal length of which lenses are coming, we now know that they are version III lenses, so that means two of the EF 300 f/2.8L IS II, EF 400 f/2.8L IS II, EF 500 Read more…
Canon News has uncovered a patent showing functionality for LCD review with EVF equipped ILCs.
We have been told in the past that Canon is working on a EVF DSLR, which makes some sense to us if the EVF is as good as what we see on the Leica SL. As Canon News points out, the patent images show a DSLR and not an EOS M camera.
From Canon News about Japan Patent Application 2018-113532:
This patent is interesting. It discusses how to do image review and also live operation with an EVF based camera and the back LCD panel, but most interesting, is the camera suggested in the patent application. It’s a DSLR shaped camera, and not an M designed camera. While Canon could use any looking camera for it’s patents, usually the image of the camera, guides their intent. In other words, I would not have expected this to be an DSLR, if they were not looking at EVF’s in DSLR form factors, but would have shown an M5 or M6 camera, it’s not as if Canon doesn’t have those images floating around. Read more….
One of the problems with any phase detect system whether it be with a separate AF sensor such as with our DSLRs, or with the on sensor phase detect system used by Canon with Dual Pixel AF sensors, or other manufactures with their pixels / rows of phase detect pixels on the sensor is that lens aberrations can throw off the phase difference calculation.
In this patent application, canon processes the AF information as well as the lens information to further quantify the AF information and come up with a more precise value. Read More….
A phase difference focus detection method (phase difference AF) is known as an automatic focus detection (AF) method used in an image capturing apparatus. The phase difference AF is an AF which is often used in digital still cameras, and some image sensors are used as focus detection sensors. In Japanese Patent Laid-Open No. 2008-52009, in order to perform focus detection based on the pupil division method, a photoelectric conversion unit of each pixel constituting an image sensor is divided into a plurality of portions, and the divided photoelectric conversion units receive light fluxes having passed through different regions of the pupil of the photographing lens via the lens via a microlens.
The phase difference AF can simultaneously detect the focus detection direction and the focus detection amount based on a pair of signals obtained from focus detection pixels formed in the image sensor, and it is possible to perform focus adjustment at high speed. On the other hand, since the phase difference AF utilizes a phase difference between optical images to perform focus detection, the aberration of the optical system which forms an optical image may cause an error to the focus detection result; therefore, a method for reducing such error has been suggested.
This embodiment provides a shutter apparatus and an image capturing apparatus, which can restrain a power consumption amount with a shorter release time lag
A shutter apparatus according to one aspect of the present invention includes a shutter base plate having an opening, a light shield movable between a closed state for closing the opening and an open state for opening the opening, a cam member rotatable in a first angle range, a second angle range, and a third angle range between the first angle range and the second angle range, the cam member that rotates in the third angle range rotating the light shield, a motor configured to drive the cam member, a forcing member configured to force the cam member so as to rotate the cam member from the first angle range to the third angle range, and a restricting member configured to restrict the forcing member from forcing the cam member in at least part of the first angle range.