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Dahua Snapshot Image Size
As commented on this thread, the image quality from grabbing an image from snapshot.cgi is MUCH less than if you do a do a Snapshot from the Live view using the camera icon. Any ideas on how to improve the quality? I've tried adding some misc. parameters to /cgi-bin/snapshot.cgi, but doesn't... -
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HTTP Snapshots Download Times Slow [Advanced Question]
Pinging this thread because I'm seeing a similar behavior to the OP. While my total transfer time is reliability under a second on a recently purchased IPC-T54IR-ZE-S3 (with 2023-11-27 firmware applied), this is still slower than a 5-year old Hikvision camera that is on the same local network... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
Thanks for the feedback guys. FYI FWIW that here's what I did and what the differences were. 1. I had made some a few changes to the camera config,then did some testing, got everything read for the upgrade, got distracted by the wife, came back and hit the upgrade button ... and then realized I... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
So "Santa" (aka Andy!) just delivered a IPC-T54IR-ZE-S3 today. I've been futzing with security cams for a couple of decades - most recently the Hikvision world. So I'm fairly familiar with the concepts and the menu's are (not surprisingly) very similar. Under System->Update, it says System... -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Thanks @wittaj for your expert comments. Per my earlier post, really impressive that the F/1.8 and 1/1.8" sensor Z4E camera has comparable (visible) low light capability as the the IPC-Color4K-T ... which is F/1.0 and 1/1.2" sensor. I think I know what to ask Santa for ... ;-) -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Yep - you gotta have SOME light! ;-) Just to be clear, when you say "But with the same amount of illumination, the Z4E comes close to the 4K", you are referring to visible light comparison - not B&W infrared on the Z4E- right? -
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Mini-Review - 5442-Z4E-S3 AKA B54IR-Z4E S3 - Replacement to the 5442-Z4E
Can you expand a bit more on this ... particularly WRT to low-light quality? I.e. if you put the Z4E against a 4k-1/1.2" sensor camera, how would they compare WITHOUT illumination ... and NOT putting the Z4E into infrared mode? I certainly agree that a BIG WIN for the Z4E is using the optical... -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
Thanks @wittaj and @Parley for the low light impressions and that sounds pretty encouraging. @EMPIRETECANDY - any comments from your experience and/or the factory about this significant improvement ... and similar advances being applied to upcoming products? -
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Mini-Review - 5442-ZE-S3 AKA T54IR-ZE-S3 - Replacement to 5442-ZE
Assuming I'm reading the specs correctly, this F/1.8 and 1/1.8" sensor camera has comparable low light capability (Min. Illumination lux) as the the IPC-Color4K-T ... which is F/1.0 and 1/1.2" sensor. It would be interesting to see a real-world comparison since IF SO, this would be quite an... -
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Dahua Visit at Oct.12th and 13th
Ditto that one can hope it is there ... with F/1.0 lens ... ;-) The pole with dozens of camera's on it is pretty hilarious! -
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DS-2CD5526G0-IZ(H)S
Here's a shootout I did back in 2018 which is when the 5526 first came out ... and that camera has been used since to Watch Grass Grow! ;-) Note that I'm (currently) using 1/6s shutter speed at night ... so that's why the image looks semi-decent (common "trick" by the vendors to show how they... -
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DS-2CD5526G0-IZ(H)S
I've had a 5526 for several years and am generally pleased with it ... but one can always hope for more low-light capability ... although 2MP in a 1/1.8" sensor (the lens is F/1.2-2.5) should do really well since it will have large pixels. I like the vari-focal since you can frame the image... -
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Dahua WIZMIND X SERIES
Even without the over-saturation, that literally is a Disney show - well done @patc WRT night footage, have you tried NOT allowing the camera to go into IR mode and is there any chance of capturing stuff with a decent frame rate? -
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Dahua WIZMIND X SERIES
You are sharing (and figuring out) some great info @patc - thanks. Any chance you share some nighttime footage with camera settings? -
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Dahua WIZMIND X SERIES
That's really impressive @EMPIRETECANDY ... curious if the aperture/iris/F-Stop was held constant as it didn't appear that the light levels changed on the zoom in/out. BTW, if you put that 1/1.2" sensor in a HDBW7442E1-Z4-X (less MP makes for bigger light sucking pixels) and want a tester, I'd... -
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Dahua WIZMIND X SERIES
Just to provide an example of what I wrote earlier, I looked up the specs of the SD8C845FG-HNF (nice San Diego skyline - although quite a bit of noise reduction in that image) and it says "Color: 0.0005 [email protected]" ... but because it's a BIG zoom (8 mm–360 mm), the Max. Aperture goes from F/1.5... -
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Dahua WIZMIND X SERIES
Great point ... and yes, I have noticed that on SOME camera's, they'll show the min/max FStop. Wouldn't it be nice if all the vendors showed a common set of data with agreed upon measuring methodology so one can reasonably compare ... WRT Zoom: As you increase the focal length, to maintain the... -
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Dahua WIZMIND X SERIES
Yep - "F/" is "F/" ... ;-) And also agree the minimum lux (as you pointed out well earlier) doesn't mean much without a shutter speed, etc. specification. But I just found it confusing why within those same-family of Dahua cams, that there wasn't more of a difference ... unless the measuring... -
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Dahua WIZMIND X SERIES
Great discussion. As a photographer, I'm somewhat familiar with the effect of aperture, shutter speed, and sensor size (and mega-pixels) on light gathering capability. Sensor technology also plays a role and it sounds like Wizmind X series is a step up in that department ... although not quite... -
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Dahua WIZMIND X SERIES
DITTO ... or better yet, how about the super-light-sensitive 1" Canon SPAD Sensor! ;-)