Canon Announces Development of the EOS R5

umphotography wrote in post #19026041
Guess i need to use mirrorless technology more. whats confusing me is OVF v/s EVF because I look through a OVF with my DSLR's

here of jared explanations

https://www.youtube.co​m/watch?v=JLV-v4sESBI

He talks about having to use an eyecup on the EVF on bright sunny days, I have never found an eyecup that works with my glasses and without my glasses I tend to bump into things as I am worse than 20/400 in each eye

umphotography wrote in post #19026041
Guess i need to use mirrorless technology more. whats confusing me is OVF v/s EVF because I look through a OVF with my DSLR's

here of jared explanations

https://www.youtube.co​m/watch?v=JLV-v4sESBI

As far as I know, EVF is the correct term for an eyepiece that's showing a display (i.e. a tiny LCD screen, such as that in a mirrorless camera). OVF doesn't have to mean "through the lens" like a DSLR, but would always be an optical path (though possibly augmented with viewfinder information).

Yet no specific resolution called out unless I missed it.

umphotography wrote in post #19026041
Guess i need to use mirrorless technology more. whats confusing me is OVF v/s EVF because I look through a OVF with my DSLR's

here of jared explanations

https://www.youtube.co​m/watch?v=JLV-v4sESBI

EVF and OVF can use an eyepiece, one just shows an optical view from a mirror, the other employs a small 4MPX or higher LCD/LED/OLED display showing what the sensor sees. We have had EVF for years now with video camera and stills. If the display is detailed enough and refresh rates are high enough, they can be more beneficial than an OVF.

umphotography wrote in post #19026021
No Optical viewfinder

what is that funny piece of glass with the rubber ring around it that is just above the Flip screen?

what am I missing on the R5 ??

Hosted photo: posted by umphotography in
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forum: Canon Digital Cameras

From his prior post, it is clear that his reference to 'optical viewfinder' is a reference to a classic purely optical system that relies upon a reflex mirror, as opposed to an Electronic Viewfinder.

John Sheehy wrote in post #19025869
AFAIK, only the first electronic curtain can move at mechanical-shutter-like speeds, and the second electronic curtain can't move that fast. If it could, we wouldn't be seeing easy jello and more pronounced banding from strobing lights in full-electronic shutter mode.

Yes Cap'n Jack will probably tell me now about some military or industrial camera, but I am talking about what manufacturers of consumer cameras are doing now, and likely to be doing in the near future.

I also told you about Huawei phone cameras, too. Are those not consumer cameras? Are they not being sold now?

How do you know what other manufacturers, such as Sony and Canon may be doing in the near future?

The sensors I pointed out to you exist now, and there is no reason their features can't trickle down to the consumer market if the management of those companies choose to add those features.

TeamSpeed wrote in post #19026087
EVF and OVF can use an eyepiece, one just shows an optical view from a mirror, the other employs a small 4MPX or higher LCD/LED/OLED display showing what the sensor sees. We have had EVF for years now with video camera and stills. If the display is detailed enough and refresh rates are high enough, they can be more beneficial than an OVF.

So when the guys are talking OVF focusing v/s Live view focusing on the 1Dx3....can i assume they are looking at the back screen and placing the focal point on subject like you would do on the EOS R screen......... and tracking like you would on a DSLR from the eye piece for OCV focusing

starting to feel like an idiot

umphotography wrote in post #19026206
So when the guys are talking OVF focusing v/s Live view focusing on the 1Dx3....can i assume they are looking at the back screen and placing the focal point on subject like you would do on the EOS R screen......... and tracking like you would on a DSLR from the eye piece for OCV focusing

Possibly more simply: I suspect the point being made is the difference between the separate phase AF sensor (as used by DSLRs when shooting through the viewfinder) and on-sensor (that is, the imaging sensor) phase AF - in this example: Canon's Dual Pixel AF (DPAF).

In the mirrorless bodies you only have an imaging sensor (no separate phase AF sensor), so whether you're looking at the rear screen or the image being projected onto the EVF, it's focusing using DPAF (like a DSLR would in liveview).

umphotography wrote in post #19026206
So when the guys are talking OVF focusing v/s Live view focusing on the 1Dx3....can i assume they are looking at the back screen and placing the focal point on subject like you would do on the EOS R screen......... and tracking like you would on a DSLR from the eye piece for OCV focusing

starting to feel like an idiot

The 1DX3 is no different than any other DSLR with live view. If you use the sensor to focus, you are using the rear screen.

Wilt wrote in post #19025974
Don't forget, Jake, that the Live View screen on your 1DXIII is most likely refreshed at 60 fps...and hopefully the EVF on the R5 will be refreshed at 120 fps (like the A9)

Refresh rate will not help two of the listed caveats:
Initial lock
Hunting speed

While the high refresh rate of the A9 helps the human's connection to the subject, it is the stacked sensor which enables it's very good AF.
EOS-R takes about 1/30 second to read the sensor. A9 does it in 1/150 sec. We don't know what the 1DXIII's spec is but safe to assume it's nowhere near 1/150 sec.
In Liveview on the 1DXIII, or any mirrorless except A9, the AF computations are limited by the slow sensor read out.
Sony states A7RIII performs 20 AF calculations per second but 60 per second for the A9.
While processing power is needed to handle the 60 calculations per second, the processor needs the data and with current technology available to the cameras we are talking about, the A9 can provide the data much faster than the rest.
Doubling the EVF refresh rate to 120 fps will just allow the human to clearly see the AF system's limitations.

My A9 only refreshes EVF at 100 fps but I have not even bothered trying the extra 20, it's just not something I find a problem.
What I would like is for Sony to copy Canon with regards to the EVF. They use the same EVF but I much prefer the EOS-R, less contrast definitely, maybe less saturation too and IMHO a much more natural view.
The A7RIV has the newer 5.7MP EVF as used in the Panasonic S1, up from the A9/EOS-R's 3.7MP but I'd still prefer 3.7MP with the Canons recipe for EVF look.

Choderboy wrote in post #19026419
Refresh rate will not help two of the listed caveats:
Initial lock
Hunting speed

Oh, doh! I have no idea why I responded that way, my head must have been up my ess due to corona stupor!

Wilt wrote in post #19026423
Oh, doh! I have no idea why I responded that way, my head must have been up my ess due to corona stupor!

Having to wipe with your bare hand affects reasoning......

With all that is going on in the world and the probability that the R5 will be delayed and it could be up to a year, I wonder if I should just get a 5D4 and enjoy using it for my birds?
If and when the R5 comes out I can always sell it and recoup some of my money. OR rather than buying new get a good used one with a low shutter count, there are a lot of them around that way the amount I would get back would be higher


what do people think?


could be a "bird in hand" sort of thing...

Jeff USN Photog 72-76 wrote in post #19026483
With all that is going on in the world and the probability that the R5 will be delayed and it could be up to a year, I wonder if I should just get a 5D4 and enjoy using it for my birds?
If and when the R5 comes out I can always sell it and recoup some of my money. OR rather than buying new get a good used one with a low shutter count, there are a lot of them around that way the amount I would get back would be higher


what do people think?


could be a "bird in hand" sort of thing...

That's a real option. A bird in the hand....

Jeff USN Photog 72-76 wrote in post #19026483
With all that is going on in the world and the probability that the R5 will be delayed and it could be up to a year, I wonder if I should just get a 5D4 and enjoy using it for my birds?
If and when the R5 comes out I can always sell it and recoup some of my money. OR rather than buying new get a good used one with a low shutter count, there are a lot of them around that way the amount I would get back would be higher
what do people think?

.
I think if I were you I would get a used 5D4 sooner rather than later, and I would put "cheap price" ahead of "low shutter count". . It wouldn't surprise me at all if you were able to find one in the $1300 range within the next few months.


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