lswcap
The EOS R5, a Canon mirrorless camera, appeals not only for photography but also for video. However, there is an emerging problem of overheating when actually shooting a video with this product. The YouTube channel (DIY Perks) has created a dedicated cooling system to prevent this EOS R5 thermal runaway.
The lens mount of the EOS R5 is a Canon RF mount, and the sensor has a full size of 36×24mm, effective pixels of 45 million pixels, and the ISO ranges from 100 to 51,200. 8K video recording is also possible. However, if you actually shoot a video in 8K, it causes a thermal runaway and the camera turns off after about 15 minutes.
If you actually shoot the EOS R5 being shot with an infrared camera, the center of the back of the camera gets hot. When the interior is disassembled and the central base is removed, a metal heat sink appears. Also, if you separate the white resin underneath, you can see the main chip.
With the heat sink attached, if you take an infrared camera around the overheated EOS R5 main chip, you can see that the temperature rises to around 80 degrees. Substrate and heat sink hardly work. The YouTuber made the copper heat sink himself and put the heat sink tube in. Coolant is pumped and connected to the tube through the heat sink. The main chip is greased and a heat sink connected to the water cooling system is placed. Install the metal heat sink originally attached to it, and then fix it.
If the water cooling system is integrated, the camera case cannot be closed, but a significant cooling effect can be expected. If you check with an infrared camera, there is no problem with the temperature around 30 degrees. In other words, it is a separate cause from the problem of overheating and the heat itself.
In fact, it is said that the EOS R5 has a structure that is difficult to remove heat, and the shutdown structure due to overheating is due to a timer, not a temperature sensor. In other words, the EOS R5 thermal runaway problem has a hardware as well as a software cause. Updating the firmware version from 1.0.0 to 1.1.1 improves the average 19 minutes until this point until 25 minutes.
Adopting water cooling can cool the camera chip sufficiently, but it is difficult to carry. Accordingly, an attempt is made to increase the cooling efficiency by self-made the internal heat sink on the copper plate. Grease is applied to the chip and memory, the copper heat sink and the substrate are fixed, and a polybiphenyl chloride sheet for cooling is attached to the substrate. When the heat sink is replaced, the available continuous shooting time increases from 25 minutes in a room temperature of 20 degrees to 39 minutes.
In an indoor temperature of 15 degrees, continuous shooting for more than 1 hour was possible. However, when looking at the rear of the camera being photographed with an infrared camera, the temperature in the center of the rear rises to 50 degrees. It is believed that the thermal problem can be solved by only improving the heat sink, and a copper heat sink and cooling fan are attached to the outside. However, if you do this, the liquid crystal panel does not close and is opened. When shooting 8K at a room temperature of 30 degrees, it was said that it did not end due to thermal runaway.
Anyway, it turns out that there is no problem with safely cooling the camera body. Now it is smaller and easier to handle with a cooling fan installed at the bottom. First, design a case to mount the cooling fan at the bottom of the camera and print it out with a 3D printer. Built-in fan and battery and attached to the camera. At the bottom, a screw hole for mounting the tripod was also placed. Using this, it is expected that the EOS R5 will be able to record 8K videos for a long time. Related information can be found here .
Add comment