Kolari tears down the Canon EOS R5 Mark II

#21
koenkooi said:
...

I realize that both English and Dutch doesn't have a clear way to distinguish between 'inside' as in 'bread inside a lunchbox' and 'inside' as in 'inside a tunnel', making this hard to express in writing. If they do have words or concepts like that, I'll be happy to be enlightened!
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In English, lumen essentially means inside a tubular biological organ, eg the gastrointestinal tract. That is getting close to your "inside a tunnel" idea, although I don't think lumen is used outside the biological context.
 
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#22
jd7 said:
I'm English, lumen essentially means inside a tubular biological organ, eg the gastrointestinal tract. That is getting close to your "inside a tunnel" idea, although I don't think lumen is used outside the biological context.
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In the medical setting we do use it in reference to tubes that we put inside people as well (ie triple lumen catheter)- said tubes aren’t necessarily biological (basically just inert plastics that we put inside biological tubes), but I can’t say I’ve heard the word used in a non medical or anatomic context.
 
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#23
SvO2 said:
In the medical setting we do use it in reference to tubes that we put inside people as well (ie triple lumen catheter)- said tubes aren’t necessarily biological (basically just inert plastics that we put inside biological tubes), but I can’t say I’ve heard the word used in a non medical or anatomic context.
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Thanks! I believe it's used in plant biology as well.
 
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#29
Del Paso said:
Only CAM here, since I used to grow cacti and other succulents.
Sorry, I forgot, also cotyledons and dicotyledons...
That's all folks!
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...all those years ago, my Botany prof attempted to aid us as far as the spelling of something botany-related was concerned...

"The 'p' is silent, like in swimming."
 
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#30
YuengLinger said:
So the USB-C port is still part of the motherboard. Tetherers beware!

EDIT: Umm, can I tether using HDMI-mini to the HDMI port on my laptop?
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Literally today was the first time I attempted to charge both batteries in a gripped R5II. It worked, both with a battery equipped with a PD USB-C port as well as using the USB-C cable that emanates from a plugged in Dell XPS 13 charger.

I realize I am tempting fate here...but in my hands virtually all of my Canon bodies (starting with a Canon A2 in the 1990s) have worked flawlessly. When it comes to doors, slots and ports I try to be as careful as possible each and every time I access them.

I have hesitated charging the battery for an M6MkII while the battery remains in the camera...every time I remove it from the camera and replace it with one fully charged.

Why hesitate using in-camera battery charging? Two reasons, actually.

First, going back to early laptop/tablet/phone days, USB and charging ports were notoriously finicky and easy to render useless. So I aim to do as little as possible with the USB ports on cameras.

Second, once in a while, when I charge batteries for the M6MkII in the Canon charger, they get a bit warm. I cannot figure out why...whether it is a battery problem or a charger problem. And it does not happen all of the time...rather, only occasionally.

So I do wonder if, when charging a camera battery while the battery resides with the camera, does the battery get warm?

I don't want that. So I charge the old fashioned way...with an external charger.

Now learning that the R5MkII's USB port resides directly on the mother board...I may just continue using the external charger.

I am open to other opinions here...
 
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#31
Diko said:
I totally forgot that the day I got my precious I was curious about the heat and checked the camera with my FLIR ONE Edge Pro.
If anyone is interested and curious... I made these shots immediately after a test drive of shooting my cats in their natural home habitat :))))

No videos. Nothing fancy. If you want something specific let me know... will try to test it.

Enjoy.



View attachment 220215
Richard CR said:
wow nice!

I'm actually a little surprised about the heat on the sensor itself actually.
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I wasn't expecting it to be so much hotter than either.
Click to expand...
 
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#35
koenkooi said:
If I grab an SD card, it is inside my fist, but not inside my body. The vents in the R5II are also both inside and not inside :)
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Oh! Hmm. Well it would be "in" your fist, and while there's no grammatical indication, I wouldn't think anyone would imagine it to have been absorbed into your body (though I'm immediately put in mind of Homer Simpson squeezing a penny and it doing just that). For the camera, I guess you would have to use a circumlocution to make it clear.

Viggo said:
How about «in» vs «inside»? I’m in a tunnel, but I’m inside the lunchbox?
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I think the tunnel/lunchbox thing is adding to the confusion. I don't see a distinction, except one is open at the ends and the other isn't.
 
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#39
koenkooi said:
If I blow cold air through my fist, it will cool my skin and through that, my hand. But the air doesn't go into my body, nor do my insides leak out through my fist. The R5II is similar, the vent channels won't let air into the electronics, the big metal plate shown in the article will dissipate the heat from the electronics to the vent channels.

This is basically the same principle of glueing a heatsink to the outside of the camera and attaching the LCD to that. The fins will look like holes since they are sandwiched between the camera and the LCD, but their are still very much external.

I realize that both English and Dutch doesn't have a clear way to distinguish between 'inside' as in 'bread inside a lunchbox' and 'inside' as in 'inside a tunnel', making this hard to express in writing. If they do have words or concepts like that, I'll be happy to be enlightened!
Click to expand...
A bit of humour if you are interested in how we use "up" and "down" in English :)
https://www.facebook.com/reel/1148390176241001
 
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#40
David - Sydney said:
A bit of humour if you are interested in how we use "up" and "down" in English :)
https://www.facebook.com/reel/1148390176241001
Click to expand...
A somewhat-related piece of (useless?!) information:

www.geospatialworld.net

Why maps point North on top?

Even though historically maps have pointed to other directions, why maps point North on top is largely because of the huge influence of European culture
www.geospatialworld.net www.geospatialworld.net

"It is actually somewhere in the 16th century with modern European imperialism at its peak and the great influence of their civilization across the world that made the map Europe-centric — and hence North on top. While the Chinese referred to their first magnetic compass as South-pointing, by the time Europeans came to adopt it, they were already experienced in navigating by referring to the North Star, the only fixed star in the Northern Hemisphere. For mariners the compass was just an artificial replacement for the star. And since Europe was situated in Northern Hemisphere, which anyway had more landmass to be explored, North-up maps became a standard."

So David - Sydney, that's why Australia is 'down under' :unsure: ;)...

Or is it this?
 
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