Amcrest 4K 8MP IP8M-2779EW-AI WDR issue

[Brandon2020]

Hello everyone,

I recently picked up a 4K 8MP Amcrest and I've been playing with the settings. I came across WDR and was playing around with it. When boosting WDR to 100 I get these blocks that appear on the image. I only notice them on bright surfaces like clouds or walls. When turning down the WDR to under 40 they disappear. Is something wrong with my camera or sensor? I have the 5MP version and that doesn't do it at 100 or below on WDR. When WDR is off I see no boxes on the 4k Cam. I have the latest firmware and have done a factory reset.


As I move the camera around I can see the boxes moving as well with the camera in the same spots. They stay in the same areas until I hit something with contrast.

[Revo2Maxx]

Hello and Welcome to the Forum..

Not sure why you would want to use a DWDR in the current scene.. However if I had to guess the issue is that it is a Software driven function and not a hardware WDR..

DWDR is a software-based approach. The camera uses digital signal processing to try and adjust the image, Post-Processing, it applies algorithms after the image is captured to balance the exposure. It adjust the contrast and brightness to improve visibility in the dark areas while reducing the brightness in the lighter areas..

Yet True WDR is Hardware based. This method uses hardware, specifically the camera sensor to capture multiple images at different exposure levels. it combines these images in real time to create a single frame that has a balanced exposure. Doing so provides a more accurate representation of the scenes with challenging lighting conditions.

So when using DWDR there are many different thing s that can happen to cause the issue of your picture. Things that can help at times involvel optimizing the cameras settings, such as reducing ISO sensitivity, improving lighting conditions. It could also be issues within the Sensor as well dust on the lens or in between the sensor and lens.

Best solution would be using a camera with a Real WDR. While these cameras do at times cost more money. It is important to get a camera with the options that are needed for your needs.

Or you could play the End is near and make yt videos of look at what I can see with my camera. There are hidden UFO out there that are to far for my camera to see but in this mode it can detect them lol Just kidding.. But I have seen crazier things lol

[Brandon2020]

Thanks!

Sorry the screenshot is not the best and it has a slight sky in it. That's where I noticed the blocks. The rest looks fine until it's a bright surface. I found this on the camera specs if this helps. Would this be software based WDR or software based?

Wide Dynamic Range up to 120dB.

[Pogo]

Try a more realistic scene that would actually benefit from the WDR feature. Your example is not what WDR is for.

[Revo2Maxx]

Sorry not sure what camera you are looking at with that data.. From the Spec Sheet the camera states
Backlight Compensation BLC /HLC /DWDR

D before WDR stands for Digital..

True WDR cameras achieve high dynamic range though hardware methods, such as capturing multiple images at difference exposures and combining them in real time. This approach can effectively handle high contrast scenes and provide a dynamic range up to 120 dB over for some cameras even higher.. Seeing I have one that is upto 140dB..

DWDR relies on software algorithms to adjust the image after it is captured.. While DWDR can improve the visibility of both dark and bright areas to some extent, it usually does not achieve the same level performance as True WDR.. DWDR is lower normally between 60 to 80dB.

While the camera I am looking up with the data is the one you have in your heading.. If that isn't the camera that retails for 104 uSD please let me know what model you are asking about so I can look up the right model..