2MP DWDR vs 4MP WDR

[nayr]

since I have 2x 2MP PTZ's and 2x 4MP Fixed Cameras, one of each with simuliar views (tight and far view) I thought I'd post up these raw captures showing how much nicer the WDR is in the 4MP Cameras.

Close Up Cars: 2MP vs 4MP


Yards/Road/Shade/Light: 2MP vs 4MP


With my north facing yard having some real WDR instead of Digital WDR is resulting in much nicer images in very high lighting due to all the contrast changes

 

[bp2008]

They all look fine to me : /

 

[nayr]

the tire tread in the first two pics shows how the detail is flattened out with digital wdr

and on the second two, was not as dramatic as I thought it'd be but at many times of the day the road will just bleach out entirely and there will be almost no detail in the sun on the front door camera.. again compare detail in the shade, the 2MP pic seems less sharp and fuzzy trying to compensate for the bright road.. but the bit of wall on the left and other shaded objects on the 4MP are crisp.

Turning on the DWDR on the 2MP cameras results in a less sharp image overall, thats more washed out.. but sometimes the results are better with it on than off when there's alot of range like this.
Turning on WDR on the 4MP cameras has no noticeable negative impact on the image at all.. turning it on under pretty much any lighting conditions appears to have no adverse impact.

 

[nayr]

here's a better example, see the sidewalks and white objects washing out in the sunlight, and the shaded areas loosing much detail.. When there is a UPS/FedEx truck sitting outside or someone with light colored clothing the exposure looks horrible... Wish the 2MP PTZ's had the WDR of the 4MP

 

[nayr]

Another Example of DWDR vs WDR, this time of the day is really hard with DWDR.. the hotspots in the road drive me bonkers.. now the one on the right is running WDR@100%



And here shows how my 4MP LPR camera looks with no WDR and WDR @ 100%

 

[Keyboard]

I'm currently playing with WDR on my my 4MP DS-2CD2042WD-I cameras. When enabled, the default setting is at 50%. It does a nice job of reducing the huge wash-out caused by the house with white siding across the street. The house faces east, so the better part of the day I get major glare from it. WDR is a welcomed feature which eliminated the problem.

However, what I noticed is that I get good detail with WDR. But, I lose contrast which causes the image to look faded. So, I changed the contrast from 50 to 75 and now the images look crisp and more realistic. Next, I'll have to see what the images look like at night. Hopefully, the new contrast setting won't appear darker.

 

[fenderman]

I'm currently playing with WDR on my my 4MP DS-2CD2042WD-I cameras. When enabled, the default setting is at 50%. It does a nice job of reducing the huge wash-out caused by the house with white siding across the street. The house faces east, so the better part of the day I get major glare from it. WDR is a welcomed feature which eliminated the problem.

However, what I noticed is that I get good detail with WDR. But, I lose contrast which causes the image to look faded. So, I changed the contrast from 50 to 75 and now the images look crisp and more realistic. Next, I'll have to see what the images look like at night. Hopefully, the new contrast setting won't appear darker.

50% wdr will look very noisy at night.

 

[Keyboard]

So far, 50% WDR looks good at night. What are you suggesting, something higher or lower?

Also, my 75% contrast setting didn't appear to adversely affect the night image.

 

[fenderman]

lower...also if you are using long exposure times, the image will look ok until you have a moving person/object...What is your exposure set to?

 

[Keyboard]

My Exposure Time=1/30, Gain=100, Iris Mode=manual.