klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
Two new interesting cams from dahua
- Thread starter fenderman
- Start date
nayr
IPCT Contributor
klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
btw Longse has IMX291 motorized VF which has Lux rating of 0.0001 in full color, so we'll see how this compares.
- Mar 9, 2014
- 36,892
- 21,408
You must be loaded if you think you can compare a longse to a Dahua starlight which has superior low light performance, an SD card slot, a mic, INTERNAL poe. Dahua has a solid reputation for making reliable cameras. Its apples and oranges. The 5mp longse sample I got had lens distortion at the outer layers of the lens.
This dahua is an almost perfect design (except for no alarm and audio interface)..Its comes from a reliable company with stable firmware. At 190 this is a great camera that I would recommend over any other dahua or hikvision turret. You might like to mess around with your cameras all day after an install, the rest of us dont. You have 3 bricked Husiun cameras, and a longse that needs to be vented in the heat...enough said.
https://www.ipcamtalk.com/showthread.php/13988-What-to-do?p=126937&viewfull=1#post126937
- Mar 9, 2014
- 36,892
- 21,408
No bot no out of context. Simply pointing out that buyers should be aware of the unreliable you recommend. Might add it to the subject title of the longse and husuin..to many folks losing their hard earned money on that crap here. If you think this forum is in any way bought by any company I suggest you find another forum to visit. Any further FALSE and malicious allegations about the integrity of this forum and I will send you packing.
nayr
IPCT Contributor
klasipca must be a Huisun/Longse bot..
I have no problem with the Huisun/Longse offerings, I have a problem with you saying anything that the cheapest junk on the market is better than the shit the professionals rely on every single fucking day.. without any evidence, or experience to back up your claims.. you spread as much bullshit as the news networks do; me, and fenderman feel obligated come in and warn members of your delusional frugal view on security before they fall for your crap.
evidence I dont have a problem with Huisun: https://www.ipcamtalk.com/showthrea...ecommendations?p=126562&viewfull=1#post126562
when was the last post you made about a Dahua that was not just entirely pulling shit out of your ass and trying to derail a conversation promoting something other than your junk?
Ever since you've had an out of focus Dahua for a day you've been talking shit all over the place.. while fixing a bumped focus was totally unacceptable, using external PoE because internal fries and bricking cameras and other critical faults completely acceptable.. Quality costs money, you clearly dont understand this concept.
I have no problem with the Huisun/Longse offerings, I have a problem with you saying anything that the cheapest junk on the market is better than the shit the professionals rely on every single fucking day.. without any evidence, or experience to back up your claims.. you spread as much bullshit as the news networks do; me, and fenderman feel obligated come in and warn members of your delusional frugal view on security before they fall for your crap.
evidence I dont have a problem with Huisun: https://www.ipcamtalk.com/showthrea...ecommendations?p=126562&viewfull=1#post126562
when was the last post you made about a Dahua that was not just entirely pulling shit out of your ass and trying to derail a conversation promoting something other than your junk?
Ever since you've had an out of focus Dahua for a day you've been talking shit all over the place.. while fixing a bumped focus was totally unacceptable, using external PoE because internal fries and bricking cameras and other critical faults completely acceptable.. Quality costs money, you clearly dont understand this concept.
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PSPCommOp
Getting the hang of it
nayr
IPCT Contributor
Depends How much are you paying for people to use them?
Professional Cloud Services Engineer, have to be high to work in the cloud.. or I would just be a Fog Services Engineer
Its clear your certifiable..
Wouldent someone whom aced that class make the same claim? With your pHD I have to assume this is BS.
You seem to think your opinion is valuable.. its not, were just pointing it out.
Wait so image quality sucked on an unfocused camera? lol, see above comment
Junk yard my ass, they all run great, I have a feeling my 75 bus with a >40 year old original air cooled engine is not only faster and more reliable than whatever your driving, Its also worth more money.
and once again, you contribution to a good discusion resulted in trash talk..
klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
Which has been started by you once again, because for whatever reason you take things personally when I stated price/features vs other options and you just went into this rambling shit talk. Anyway, it was fun, but I am done.
Chinese lux maybe. Is that 0.0001 lux PMPO perhaps, or is it 0.0001 lux at a shutter speed of 5seconds?
klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
So what do you know about Chinese lux? Isn't Dahua Chinese? but nevermind the lux rating from manufacturer, just look up specs for IMX291 sensor
I don't put any credence in Dahua or Hikvision specs either. They all lie. It's evident you've never actually done anything that relies on light measurement or looked at the interaction between the imager and the whole light path, so you oooh and aaah over bullshit light specs without knowing how they are measured, or how they are impacted by the lens.
Thats ok, because real low light cameras cost more than a buck fifty and have serious lenses and light paths.
to throw out one number I happen to have handy. To achieve a real light sensitivity in colour of 0.0125 lux (measured and verified at shutter speeds exceeding 1/60) the camera has a 1" imager, and uses a fixed focus lens that is less than f1.0 with a full 25mm light path. Absolutely guarantee your cheap Buck fiddy Chinese camera with crap glass up front won't get within a bulls roar of it. Hell, the Hik Darkfighter I have here with a matching Hik low-light lens can't get close to it, but the specs on paper supposedly exceed it by a factor of 25. Again, Chinese lux vs real world. So your claims don't impress me because I actually verify this shit for a living.
Imager specs mean nothing unless they give you corrected specs with minimum shutter speeds and maximum lens attenuations. Anyone can make a 0.0001 lux imager in full colour if they never "close" the shutter, they're not useful in the real world.
Send me one of your super star cameras and I'll shoot it out for you agains real cameras with real glass and we'll see whose light specs are accurate.
klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
Bullshit specs is all we have and of course they exaggerate and I never care about much their inflated lux rating, my reply was in response to nayr who brought up the lux comparison. The only thing I care the most is what sensor cams use and Dahua/Hikvision both hide that piece information. Until we see it in action it's all speculation based on bullshit specs.
So I did just that. http://www.sony.net/Products/SC-HP/sensor/img/product/cmos/IMX290_291LQR_Flyer.pdf
Oddly enough the full colour example they show on the actual SONY spec sheet is at 0.08 lux with an f1.4 lens (which is pretty realistic) the internal gain was set at 63dB (which explains the significant noise in the colour image).
Maximum sensitivity values are given at f5.6, but with a 1s accumulation time. So not even remotely real-world. So where did your 0.0001 lux at full colour come from?
Hi,
The spec of those cams has been available since 2 months:
https://www.ipcamtalk.com/showthread.php/12550-Eco-Savvy-3-0-Series
;-)
I'm really happy about the starlight cams in the eco-savy line. I'm a big fan of good lowlight cams. I've tried Dahua Starlight (PTZ) and Hikvision Darkfighter. Both are great, but both have much more features than i need/want, and both needs much more power because of those features.
I'm looking for a lowlight cam with good sensor and less power consumption. The eco-savy 3 sounds great.
The specs on the linked catalog in https://www.ipcamtalk.com/showthread.php/12550-Eco-Savvy-3-0-Series says it uses exmor-r sensors and have true wdr (sensor based - multiple exposure wdr). Well it seems it is the Sony IMX291. The Dahua Super-wdr (140 db) cams seem to use the IMX123 (with DOL-WDR).
I've tried a longse with IMX178. The sensor ist great (but without true wdr). But you can not compare the longse firmware with those hik and dahua.
The longse IMX291-Cams has a f/2.0 lens and the dahua has a f/1.4 lens. f/1.4 is more than double the light of the f/2.0 lens.
regards
morpheus
The spec of those cams has been available since 2 months:
https://www.ipcamtalk.com/showthread.php/12550-Eco-Savvy-3-0-Series
;-)
I'm really happy about the starlight cams in the eco-savy line. I'm a big fan of good lowlight cams. I've tried Dahua Starlight (PTZ) and Hikvision Darkfighter. Both are great, but both have much more features than i need/want, and both needs much more power because of those features.
I'm looking for a lowlight cam with good sensor and less power consumption. The eco-savy 3 sounds great.
The specs on the linked catalog in https://www.ipcamtalk.com/showthread.php/12550-Eco-Savvy-3-0-Series says it uses exmor-r sensors and have true wdr (sensor based - multiple exposure wdr). Well it seems it is the Sony IMX291. The Dahua Super-wdr (140 db) cams seem to use the IMX123 (with DOL-WDR).
I've tried a longse with IMX178. The sensor ist great (but without true wdr). But you can not compare the longse firmware with those hik and dahua.
The longse IMX291-Cams has a f/2.0 lens and the dahua has a f/1.4 lens. f/1.4 is more than double the light of the f/2.0 lens.
regards
morpheus
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klasipca
Banned
- Mar 27, 2014
- 3,137
- 750
You can simply google that info, but we all know this is all BS anyway. IMX291 cams have been around for a while and I was tempted to get one, but I am not convinced that overall image quality is that good.