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Paul B Felix

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  1. I guess we can rule out led lights then. I’ll pay attention to when this happens. If it happens outdoors then I’ll let you know.
  2. I’ve also seen the issue where the camera returns to shooting mode while reviewing a picture. It seems to happen in my house most often, but that may be a coincidence. I know the LED lights in my house are emitting rf that is interfering with the camera which I assumed to be the cause of this issue. Are you seeing the issue while in any particular environment? I have not seen the BTP issue yet.
  3. I conducted a small test that shows the impact of DRO on raw images. All of the attached images were taken in multimeter with full manual settings. I also tested this same scenario when spot metering while using aperature priority (spot metered in highlight and in shadow). All test point to the same conclusion; DRO is clearly impacting the raw image. The shadows in the DRO enabled images are brighter. The notes on the top of the image refer to post processing in C1. Notes on the left of each image refer to how the DRO setting in camera; Off or Auto. Contrary to the prior posts, I was not able to find a difference between what I was seeing on the live view or evf as compared to what the unadjusted exposed in C1 looked like. I'm not sure why this is the case, but I can only assume that a setting difference is the cause as we all have the latest version of C1.
  4. https://photo.stackexchange.com/questions/80115/what-exactly-does-dro-do-and-how-does-it-work Another good bit of info.. This could very well explain why the images in this thread seem underexposed. However, the above pics were taken in Manual mode. It might be possible that the evf is adjusting for DRO while the raw file was not being adjusted. Just a guess.
  5. https://www.imaging-resource.com/PRODS/AA100/AA100DRO.HTM This article talks about DRO for an A100. So, I guess the raw sensor data is not impacted, but the tone curve is used to convert the image. If this is the case, then we should be able to do the same thing by using adjusting the highlights and shadows in C1. But, I'll test this.
  6. @sixzeiss In this case, would it be correct to assume that DRO has no impact on a raw file processed by C1?
  7. I don't know the specifics about how DRO works so this may be completely wrong, but is it possible that the sensor's sensitivity is being changed on a photosensor by photosensor basis by the DRO setting. For example, if the camera evaluates the overall image and finds that the range is beyond what the camera can handle, would the camera increase/decrease the effective iso on particular photosensor? If that is what is going on, then I'd expect the raw file to look very different when capturing a high dynamic range image such as your example assuming the window is very bright.
  8. Very interesting. I’ll do a similar test using C1 this weekend. Can’t say I understand how setting dro to 5 increases a raw file’s ability to be manipulated in LR. If this is the case then I assume the raw file is impacted when dro is enabled.
  9. @Lescatalpas I'll do some experimenting. Thanks for the info. I was incorrectly assuming DRO would only impact jpg.
  10. That article on flickering is a good read. I guess it makes sense that the refresh rate on the camera screen is somehow at the same frequency or close to the same frequency as the LED light's refresh rate.
  11. Yep. Totally agree, Bokehbobo. In the end, this is not a huge deal. I love my A7RII as well, and a little interference isn't going to change that.
  12. I did pretty much exactly as you described, Chrissie. Inside the house this problem occurs only when the LED lights are on. If I turn the lights off, or if I move outside, then the problem goes away. The intensity of the LED light also impacts the severity of this issue. Full power on the dimmable lights results in the worst banding. In the living room the ceiling is much higher, and the issue is less severe. The evidence is pretty conclusive that the LED lights are emitting some type of RF that the camera is not designed to operate within. It is also possible that the dimmers themselves are part of the problem. I'm surprised that more people have not run into this issue. My guess is that as more spaces use LED lighting camera makers will add shielding and light makers will limit the noise they produce.
  13. Hi Bob, My overhead lights are not retrofits. I did a remodel on my house in 2016 and completely replaced all of the lights out. The new lights are nearly all recessed LED lights. They look like what is often called "can lights" that would use a flood bulb, but they are actually LED lights. I had the same problem you are talking about with remote that controls a audio recorder when near florescent lights. After changing to LED lights the problem went away. I agree; the problem appears to be related to RF interference although I'm not knowledgeable enough to nail it down much further. The severity of the problem as it relates to the A7RIII is unexpected. Either the LED lights in my house are terribly noisy, the camera doesn't have adequate shielding, or some combination of both must exist. Thanks for taking the time to reply. This is a mystery that will probably continue indefinitely. Paul
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