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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 26 Aug 2020 (Wednesday) 09:33
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-= Canon EOS R6 owners unite! Post photos and discuss.

 
Levina ­ de ­ Ruijter
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Apr 28, 2021 15:58 |  #2296

Capn Jack wrote in post #19228988 (external link)
Good afternoon, Levina!
It's possible only a portion of the card is bad, or the card is intermittent. Try your card and see that the problem recurs. Replace with another card and see if the problem seems to go away.

There are tools to check SD cards, but I don't know which are good ones.

Did you have a chance to check the time stamps on the images and see if some have an odd difference in time compared to the images that worked?

Also, the 7D2 (and other cameras) have a feature where images aren't taken if focus isn't locked. I wonder if this is turned on? If so, I wonder if the shutter isn't opened, but it still collects an image.

If you can share camera settings and configuration, others can try to reproduce the problem as suggested by @WilsonFlyer.

Hello, Jack!
I looked at the time stamps and file names and see no anomalies.

As to not shooting if AF is not locked, as far as I know the R6, in Servo AF, will shoot, whether something is in focus or not. Besides, I have taken my number of out of focus shots with the R6! :-P

As to my settings. I use back-button focus with Eye-AF on the AF-ON button and Spot-AF on the * button. Then I have the DOF Preview button set to Zone-AF, which acts as an assist. It works very well. Are there any other settings/configuration that might be of relevance?

RayinAlaska wrote in post #19228992 (external link)
That is estrange. I have had that happen as follows, but just one or two black frames every now and then when taking photos of the auroras at night: by unintentionally touching the screen before removing the lens cap. Black screens result from in-camera high ISO noise reduction, too. It does sound like a timing issue.

If your R6 is under warranty, take your time and see if you can duplicate the problem, then send it to Canon. They will probably need the card with the black frames.

Ray, I have both High ISO speed NR and Long exp. NR turned off. Also, I have not set up my camera in a way that touching the screen will take a photograph. And the black frames can happen at any time, like in the middle of shooting. So I have normal frames and then suddenly black frames and then normal frames again. Sometimes I get two or three black frames, two normal ones and again a few black ones.

The problem I have is that it happened twice in two days now. It also happened on 4 April, as I was shooting some swans. But before that I had several months of normalcy. I only wish I had kept all the black frames. Which I didn't, because I didn't think much of it. But now I am worried. And I just have no idea how to replicate it. So I will have to be vigilant and if it happens again make a note of what I was doing. And I will keep the black frames.

Silly question no doubt, but could it be some lens-to-camera connection maybe? Just wondering. Although that would also cause the EVF to go black, I suppose. Which is not happening. It's only when I take the camera down and see the last image being black on the rear screen that I realise the camera didn't record anything.

As to the "timing issue", what is that exactly?


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Capn ­ Jack
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Apr 28, 2021 16:58 |  #2297

Levina de Ruijter wrote in post #19229060 (external link)
Hello, Jack!
I looked at the time stamps and file names and see no anomalies.

Thanks!

Levina de Ruijter wrote in post #19229060 (external link)
Silly question no doubt, but could it be some lens-to-camera connection maybe? Just wondering. Although that would also cause the EVF to go black, I suppose. Which is not happening.

I wouldn't rule out a lens connection issue, although I'd also expect some sort of communication error. No, it's not a silly question, and I read a correlation to lens change. I forget if I read that it seemed to happen when a particular lens was used?

Levina de Ruijter wrote in post #19229060 (external link)
It's only when I take the camera down and see the last image being black on the rear screen that I realise the camera didn't record anything.

Is it only the last image in a burst? Or last few images in a burst? Have you found bad images in the middle of a burst?

Levina de Ruijter wrote in post #19229060 (external link)
As to the "timing issue", what is that exactly?

We don't know as yet, and it is only a hypothesis anyway, and may not be the cause at all. Thus far, you are the only one we know reporting it and if it were a software bug affecting timing, we might expect to hear more reports. However, someone has to be the first to find any software issue, and you may have a combination of settings that allow it to happen. It's nearly impossible to test every combination of settings to see if there is a problem.

There's many things happening in these cameras that need to happen in the correct sequence, with very tight timing, especially during a burst. To simplify, each row needs to be exposed, read, converted to digital, any in-camera processing done, and sent to the card before the next image can be stored. Assuming there isn't a lens or SD card problem, all of this is done electronically, controlled by software.

Anyway, thanks for your patience with me and my questions.




  
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Levina ­ de ­ Ruijter
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Apr 28, 2021 17:25 |  #2298

Capn Jack wrote in post #19229092 (external link)
Thanks!

I wouldn't rule out a lens connection issue, although I'd also expect some sort of communication error. No, it's not a silly question, and I read a correlation to lens change. I forget if I read that it seemed to happen when a particular lens was used?

No, not a particular lens. I don't think, as the black frames happened with both the 800/11 and the 400/5.6L.

Is it only the last image in a burst? Or last few images in a burst? Have you found bad images in the middle of a burst?

No. It can alternate, so I have normal images, then suddenly two blacks, then normal images, then three blacks. However, I don't shoot in bursts exactly. I shoot very controlled, even in electronic shutter mode. So I will shoot a few images, then wait till the bird has turned, assumed a better pose, etc., and then shoot another few images, wait again, and so on. It's extremely rare for me to go all in and keep my finger down on the shutter button. So often there are many seconds or even minutes between shots.

We don't know as yet, and it is only a hypothesis anyway, and may not be the cause at all. Thus far, you are the only one we know reporting it and if it were a software bug affecting timing, we might expect to hear more reports. However, someone has to be the first to find any software issue, and you may have a combination of settings that allow it to happen. It's nearly impossible to test every combination of settings to see if there is a problem.

There's many things happening in these cameras that need to happen in the correct sequence, with very tight timing, especially during a burst. To simplify, each row needs to be exposed, read, converted to digital, any in-camera processing done, and sent to the card before the next image can be stored. Assuming there isn't a lens or SD card problem, all of this is done electronically, controlled by software.

Okay, I'm beginning to understand what a timing issue might mean. Thanks for the explanation, Jack.

Anyway, thanks for your patience with me and my questions.

Ha, you are thanking me? That's the world upside down a bit as I am very grateful for your help in trying to assess what is going on! So thank you.


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ct1co2
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Apr 28, 2021 17:48 |  #2299

Hi Levina. I'm curious, are you shooting in RAW or CRAW when the black image scenario occurs? I have my buttons set up for AF same as you. I've not run into the issue you have described although I've not shot in electronic shutter, only mechanical so far. I'm a bit baffled about what the cause could be. I'll throw another vote to contacting Canon as well.


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Levina ­ de ­ Ruijter
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Apr 28, 2021 18:10 |  #2300

ct1co2 wrote in post #19229131 (external link)
Hi Levina. I'm curious, are you shooting in RAW or CRAW when the black image scenario occurs? I have my buttons set up for AF same as you. I've not run into the issue you have described although I've not shot in electronic shutter, only mechanical so far. I'm a bit baffled about what the cause could be. I'll throw another vote to contacting Canon as well.

Hi, ct1co2. I shoot in RAW exclusively.

Yeah, contacting Canon sounds like a good idea to me too. I just wish I had more info to give them as to when it happens exactly. So I will wait a bit longer, hopefully it'll happen again and I might have more info then.


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ct1co2
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Apr 28, 2021 19:36 |  #2301

Levina de Ruijter wrote in post #19229142 (external link)
Hi, ct1co2. I shoot in RAW exclusively.

Yeah, contacting Canon sounds like a good idea to me too. I just wish I had more info to give them as to when it happens exactly. So I will wait a bit longer, hopefully it'll happen again and I might have more info then.

Thanks. I’m shooting in CRAW. I hope you are able to get to the bottom of what is happening.


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Apr 29, 2021 03:00 |  #2302

Couple of photos from my morning stroll with the Canon 100-400ii and 2xTC


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Post edited over 1 year ago by PSteven. (2 edits in all)
     
Apr 29, 2021 08:20 |  #2303

Giving the Canon RF600 F11 a test drive for 48 hours thanks to Canons free hire offer in the UK

Cropped and uncropped

I am liking this lens a lot! Image quality seems slightly better than the 800RF but there are so many variables that I may be imagining this.


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PSteven
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Apr 29, 2021 08:37 |  #2304

Another shot taken with the Canon RF 600 F11

Cropped and uncropped


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findmory
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Apr 29, 2021 08:48 |  #2305

Don1 wrote in post #19226870 (external link)
The Tree Swallows are back. Although I saw some about a week ago none were present in the usual locations. Today that changed.

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Tree Swallow (external link)] by Don Cassel on Flickr

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Tree Swallow (external link)] by Don Cassel on Flickr

I've been having fun chasing after the Tree Swallows as well. Beautiful color and luxurious, metallic blue feathers!


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Post edited over 1 year ago by omer.
     
Apr 29, 2021 16:34 |  #2306

1st time shooting a concert
Hi iso - i am so impressed
(Only crop no processing)


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R6 | 80D | 7D | M6 |RF24-105 STM|RF35 1.8| EF-S 15-85 |EF 70-300 L |Sig 150-600 C| Sig 10-20 | 50 1.8 |100 2.8 macro|28 F2.8 | efs24| efm 15-45| 270EX | 430EXII |

  
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RayinAlaska
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Apr 29, 2021 21:06 |  #2307

Levina de Ruijter wrote in post #19229060 (external link)
Hello, Jack!
I looked at the time stamps and file names and see no anomalies.

As to not shooting if AF is not locked, as far as I know the R6, in Servo AF, will shoot, whether something is in focus or not. Besides, I have taken my number of out of focus shots with the R6! :-P

As to my settings. I use back-button focus with Eye-AF on the AF-ON button and Spot-AF on the * button. Then I have the DOF Preview button set to Zone-AF, which acts as an assist. It works very well. Are there any other settings/configuration that might be of relevance?

Ray, I have both High ISO speed NR and Long exp. NR turned off. Also, I have not set up my camera in a way that touching the screen will take a photograph. And the black frames can happen at any time, like in the middle of shooting. So I have normal frames and then suddenly black frames and then normal frames again. Sometimes I get two or three black frames, two normal ones and again a few black ones.

The problem I have is that it happened twice in two days now. It also happened on 4 April, as I was shooting some swans. But before that I had several months of normalcy. I only wish I had kept all the black frames. Which I didn't, because I didn't think much of it. But now I am worried. And I just have no idea how to replicate it. So I will have to be vigilant and if it happens again make a note of what I was doing. And I will keep the black frames.

Silly question no doubt, but could it be some lens-to-camera connection maybe? Just wondering. Although that would also cause the EVF to go black, I suppose. Which is not happening. It's only when I take the camera down and see the last image being black on the rear screen that I realise the camera didn't record anything.

As to the "timing issue", what is that exactly?

Capn Jack explains what a timing issue could be the problem. Since every step the camera must take to take a photo has to be in sequence, maybe a glitch in the software interrupts or causes the camera to miss a step.




  
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RayinAlaska
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Apr 29, 2021 21:11 |  #2308

IMAGE: https://photos.smugmug.com/photos/i-dQdNkPH/0/830f907e/O/i-dQdNkPH.jpg



  
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Apr 30, 2021 02:49 |  #2309

Couple of test shots with the Canon RF 600 F11 on my morning stroll


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May 01, 2021 08:40 |  #2310

This morning's visit.


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Canon EOS R3| Canon RF 24-105L| RF 50| RF 24-240| RF 100-400| RF 800 and a bunch of Canon L lenses
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