Confirmed: Canon EOS R5c to be announced next month [CR3]

[privatebydesign]

Raising ISO and stopping down the lens beyond f16 introduces noise and possibly the lens will show the effects of diffraction.

On a windy day with moving elements a longer exposure time is no good or if you simply want to freeze even slow moving action.

I have an understanding of equivalence, yet he did precisely that, shot his scene at 32mm f16 on the GFX yet he needed to focus stack as his DOF was too shallow to get the background and foreground in focus in one shot. Watch his video and you can see for yourself.

Please read about equivalence. Diffraction and noise (and aperture) are all related to ultimate subject magnification. With a ff camera you have to enlarge the captured medium more than you do the medium format capture so the impact of noise and diffraction is more from the smaller format.

As I said earlier, if you divide the aperture, focal length and iso by the crop factor, in this case 0.79, you get two images with identical framing, depth of field (and diffraction) and noise if the two sensors were made identically. Well the truth is the larger sensor will always display slightly less noise but that's another rabbit hole for another time.

This link might help but it really pisses off some members because I link to it quite often. http://www.josephjamesphotography.com/equivalence/

The biggest issue that most people run into when they are looking at different sensor outputs is to compare them on a monitor at the same magnification, typically 100%. This is fallacious as you are enlarging the higher mp image more. There is a way to view images with different mp numbers at the same magnification in PS but it can be a bit fiddly and I have never seen a single YouTuber actually do it correctly.

 

[neuroanatomist]

Raising ISO and stopping down the lens beyond f16 introduces noise and possibly the lens will show the effects of diffraction.

On a windy day with moving elements a longer exposure time is no good or if you simply want to freeze even slow moving action.

I have an understanding of equivalence, yet he did precisely that, shot his scene at 32mm f16 on the GFX yet he needed to focus stack as his DOF was too shallow to get the background and foreground in focus in one shot. Watch his video and you can see for yourself.

Raising ISO…introduces noise…you understand equivalence. Except that if you did understand equivalence, you’d know that raising the ISO to maintain shutter speed with a narrower aperture is noise-neutral when comparing a smaller to a larger sensor size. So evidently you don’t understand equivalence.

As for watching the video, if you’re referring to the one @privatebydesign linked, I saw nothing relevant in there. Fortunately I was moving my bowels while watching, so it wasn’t a total waste of time. He lost me at, “Crop mode extends any lens you have attached.” That clearly shows his technical understanding of photography is crap (sorry, the metaphor was topical), so whether it was the wrong video or not is immaterial.

In a debate between your opinion or the opinion of some YouTuber and physics, I will trust physics to win. Every time.

 

[Tarepanda]

I really feel conflicted about this camera.. at first I really want to buy it but now it really needs to fall into the rice price range.. as far as rumors go it's basically a slight improvement over the R5 (a welcomed one though) but I wouldn't put too much money to basically remove a software limit (30min) and software capabilities (logs) that could (but won't) be pushed through firmware updates and a fan..
considering they're tagging their camera with a C though makes me think that canon will go crazy on the price as it's a "C" line afterall..
we shall see soon enough I guess but I'm not paying 5 or 6k for a slightly improved R5

 

[tomislavmoze]

Has this actually happened to you?

I have never heard about any overheating in 1080p.

Perhaps there were other factors involved (wrong video C3 settings etc) as I cannot see this being normal.

Unfortunately yeah, it's happend every time. If you own one push it to overheat and try to film in 1080p 100p or 120p, you will see, other 1080 modes will work. When they announced that the update will offer 120p in 1080 I was so happy but at the end it suffers the same overheating as in 4k. To bad cause there is no way to film 120 frames without overheating problem. And it's not about the settings. It was movie mode, manual in c-log with Sandisk cfexpress 256 card.

 

[Finn]

I really feel conflicted about this camera.. at first I really want to buy it but now it really needs to fall into the rice price range.. as far as rumors go it's basically a slight improvement over the R5 (a welcomed one though) but I wouldn't put too much money to basically remove a software limit (30min) and software capabilities (logs) that could (but won't) be pushed through firmware updates and a fan..
considering they're tagging their camera with a C though makes me think that canon will go crazy on the price as it's a "C" line afterall..
we shall see soon enough I guess but I'm not paying 5 or 6k for a slightly improved R5

Is it really a "C" camera though? Same photo-centric sensor as the R5. Based on the rumors it sounds like they added more mount points and a fan. No rumors about waveforms, false colors, or any other video assist tools.

 

[fathergll]

This camera will be needed to really support the 5.2MM VR lens because of the overheating in the current R5 at 8k.

 

[Pixel]

I haven’t read thru all the pages here…but is it safe to say as far as a stills camera, the R5c is no different than the R5?

 

[cayenne]

I made a conclusion based on knowledge of the principles of depth of field and equivalence.

The comments section merely shows that there are several people who lack a technical understanding of photography. You can find many posts on this forum from people claiming they choose to use APS-C cameras instead of FF because they want more DoF. The fact that many people make the same mistake doesn’t make them correct. The Flat Earth Society has many members, does that mean their belief is correct? No, it just means there are a lot of idiots out there.

As to your first question, I haven’t used the GFX. I have a large collection of 645 negatives from back in the day when medium format meant more than ‘a bit larger than FF’.

I own a GFX100, and can confirm your posts.

You just have to adjust by the 0.79 to get things the same as a full frame camera as far as DOF, etc.

Lol, these guys would really freak trying to figure out when adapting "real" medium format lenses, like the old V system Hasselblad lenses with a focal reducer on the GFX.....

At one time I did calculate what the V system 80mm would be on a FF camera when attached to the GFX sensor...but I lost that bar napkin, and my heads still hurting from NYE celebrations to try to redo that math.



cayenne

 

[bergstrom]

"The announcement might come between January 11, 2022, and January 18, 2022"

Getting close. But if the price isn't right, I'll wait for RP successor.

 

[ag25]

 

[jayli]

Probably should share the more contemporary link, covering CLog3 and the Ninja V+: https://www.cined.com/canon-r5-external-8k-prores-raw-dynamic-range-lab-test-8k-without-overheating/

It's still the same. The limitation is the sensor and the 12bit ADC