IPC-HDBW71242E1-Z-X (12MP 1/1.7)
- Thread starter ZeeCam
- Start date
don't buy this model, this sensor (comparing to 5442 or 7442) is very bad...
check this and the following posts
check this and the following posts
Here is image from 71242 (12 mpx in 1/1.7" sensor in 7xxx-x WizMind-X)..
it cost 3x more that 5442.. Image is even much worse that 58IR...
PS. Dahua should do 58IR using 1/1.2" sensor... like axis did (4mpx is 1/1.8", 8mpx is 1/1.2" or 4/3" in latest Q36 dome / Q18 bullet series)...
it's the only way to migrate from 4 mpx to 8 mpx cams (increase sensor size in the same line)...
it cost 3x more that 5442.. Image is even much worse that 58IR...
PS. Dahua should do 58IR using 1/1.2" sensor... like axis did (4mpx is 1/1.8", 8mpx is 1/1.2" or 4/3" in latest Q36 dome / Q18 bullet series)...
it's the only way to migrate from 4 mpx to 8 mpx cams (increase sensor size in the same line)...
+1 above.
It is not on the ideal MP/sensor ratio and will perform poorly.
There used to be a thread here someone posted and we are encouraged them not to purchase, but they chased MP and purchased anyway and then resulted in a too dark image at night. Sadly the thread is now gone, so I can't point you to it to read all the reasons why you shouldn't chase MP.
Here was one thread about the camera
Basically you want a camera that is in the green below:
It is not on the ideal MP/sensor ratio and will perform poorly.
There used to be a thread here someone posted and we are encouraged them not to purchase, but they chased MP and purchased anyway and then resulted in a too dark image at night. Sadly the thread is now gone, so I can't point you to it to read all the reasons why you shouldn't chase MP.
Here was one thread about the camera
Basically you want a camera that is in the green below:
So, I ran across this thread as I was contemplating ordering a couple (DH-IPC-HDBW71242E1-Z-X) for my Mom, as I am installing a new system for her. Glad I saw this. I will be ordering a DAHUA DHI-NVR5216-16P-EI2 recorder. I was originally going to use bullet cameras like DH-IPC-HFW21249T-(A)S-IL fixed focal 12 mp / (1/2.5" sensor) or DH-IPC-HFW71242H-Z-X varifocal 12 mp / (1/1.7" sensor), but then I saw the "Sensor Size vs Pixel" chart! So then, I did kinda prefer a smaller PTZ for more flexibility like the DH-IPC-HDBW71242E1-Z-X, 12 mp / (1/1.7" sensor), which put me back in the same situation as the 2 bullet options......., so now scratching my head.
After doing some more research on the DAHUA product catalog of WizMind series 7, I was thinking of going with fewer pixels, perhaps 4MP or 8MP. My novice was thinking more pixels equals improved clarity, but I'm learning. So now, I am comparing a 4mp & 8mp, both have 1/1.8" sensor, and lens is 2.7-12mm for wider viewing, see pdf file. And I was comparing a 4mp & 8mp, both have the 1/1.8" sensor, but lens is tighter at 8-32mm. Does anyone have examples of these cameras they could share? I was thinking of getting one or two of the 2.7-12 mm and maybe a couple of the 8-32 mm, but not sure on 4MP or 8MP. Again, the novice in me says I would like 8MP, but after seeing the chart, it appears the 4mp would be a "safer" purchase, in terms of picture quality (day & night). Does that make sense? Thanks for any assistance.
After doing some more research on the DAHUA product catalog of WizMind series 7, I was thinking of going with fewer pixels, perhaps 4MP or 8MP. My novice was thinking more pixels equals improved clarity, but I'm learning. So now, I am comparing a 4mp & 8mp, both have 1/1.8" sensor, and lens is 2.7-12mm for wider viewing, see pdf file. And I was comparing a 4mp & 8mp, both have the 1/1.8" sensor, but lens is tighter at 8-32mm. Does anyone have examples of these cameras they could share? I was thinking of getting one or two of the 2.7-12 mm and maybe a couple of the 8-32 mm, but not sure on 4MP or 8MP. Again, the novice in me says I would like 8MP, but after seeing the chart, it appears the 4mp would be a "safer" purchase, in terms of picture quality (day & night). Does that make sense? Thanks for any assistance.
4MP all the way. Not even close.
At night, the lower MP camera on the same sensor as a higher MP will win. At night, the 4MP will show an identifiable image where the 8MP will show an unidentifiable blob. And when the 4MP is showing an unidentifiable blob, the 8MP won't know anything is there at all.
And it is even more critical for PTZs that see a wider range of light based on distance it is looking at.
Keep in mind the more zoom, the worse the f-stop, which means more light is needed.
Before I learned LOL, I bought a PTZ on the less than ideal MP/sensor ratio and then later bought the same PTZ except the lower MP version model and at night it isn't even a comparison. The lower MP sees much further. And close up, the lower MP is in color while the higher MP can't run color.
Here is a thread on the comparison of the 5-series comparison between the 4MP and 8MP on the same 1/1.8" sensor. The 7-series just have a few more bells and whistles, but the image comps would be close.
At night, the lower MP camera on the same sensor as a higher MP will win. At night, the 4MP will show an identifiable image where the 8MP will show an unidentifiable blob. And when the 4MP is showing an unidentifiable blob, the 8MP won't know anything is there at all.
And it is even more critical for PTZs that see a wider range of light based on distance it is looking at.
Keep in mind the more zoom, the worse the f-stop, which means more light is needed.
Before I learned LOL, I bought a PTZ on the less than ideal MP/sensor ratio and then later bought the same PTZ except the lower MP version model and at night it isn't even a comparison. The lower MP sees much further. And close up, the lower MP is in color while the higher MP can't run color.
Here is a thread on the comparison of the 5-series comparison between the 4MP and 8MP on the same 1/1.8" sensor. The 7-series just have a few more bells and whistles, but the image comps would be close.
Thank you both! I guess these two 4MP PTZ cameras w 1/1.8" sensor (IPC-HDBW7459Z-Z-PV-X & IPC-HDBW7459Z-Z4-PV-X) both have IR for night, at least the spec says "4 (Multi-core (IR + warm) light)", which I think means IR is on at night, until motion is sensed, and then warm light comes on...... Does someone know that answer? I prefer the IR's vs the warm light, and hoping they are independent & maybe it has a pure "IR mode". Guessing you can go into the "working mode" parameters and select illuminator to adjust the setting, but just speculating, maybe someone can confirm......, maybe someone can recommend an optimal configuration for that.
I don't own that camera so can't be certain, but by and large yes, thats how it works on other models.
BTW- Why a dome? Those are last choice for many of us
Usually weaker IR, rain and dirt residue on the dome, etc. unless indoors
BTW- Why a dome? Those are last choice for many of us
Usually weaker IR, rain and dirt residue on the dome, etc. unless indoors
I selected a dome vs bullet, as I wanted to flexibility of pan & tilt to allow to turn it. Make sense?
Keep in mind a PTRZ camera is intended to be a set it and forget it. It isn't a PTZ and continuous movement will wear it out.
The only benefit it has over a fixed camera is the ability to adjust the angle remotely, which would be nice for a tough to get to location, as well as a smaller form factor.
But the con will be the IR will not be as strong and all the issues we see from ourside domes.
Unless you have an install that is tough to get access to or you need the smaller form factor, the bullet will beat this all night long.
The only benefit it has over a fixed camera is the ability to adjust the angle remotely, which would be nice for a tough to get to location, as well as a smaller form factor.
But the con will be the IR will not be as strong and all the issues we see from ourside domes.
Unless you have an install that is tough to get access to or you need the smaller form factor, the bullet will beat this all night long.
Ok, thank you both again. So, these cameras are for a ranch style home, and each house corner can be easily accessed with an 8 ft step ladder. I have run 2 new cat 7 Ethernet lines and also two 12 volt lines (if needed) to each corner. I may only use one set per corner, but wanted the flexibility of 2 per corner, if I thought it was necessary. I may need to reconsider the dome option, I didn't anticipate any movement (pan or tilt), but only once in a great while, maybe every couple months, I would like the flexibility to pan or tilt remotely. That would still be accomplished remotely through the camera parameter options, correct? (That was my understanding, please correct me if I am wrong.) Basically, I don't have to get the stepladder, when I visit my Mom to adjust angles (pan or tilt) with it.
If I go w/ the bullet, I could put 2 per corner at different positions. That would then bring me back to the 4mp / (1/1.8" sensor) and then decide on which varifocal lens options = (2.7-12 / 8-32 / 8-80) Guessing would use mainly 2.7-12, and maybe a select few of 8-32 or 8-80.
Maybe those that have the dome version, can comment on if they wish they had the bullet version, ha....
I'll attach each bullet varifocal option, in case someone wants to see them.
If I go w/ the bullet, I could put 2 per corner at different positions. That would then bring me back to the 4mp / (1/1.8" sensor) and then decide on which varifocal lens options = (2.7-12 / 8-32 / 8-80) Guessing would use mainly 2.7-12, and maybe a select few of 8-32 or 8-80.
Maybe those that have the dome version, can comment on if they wish they had the bullet version, ha....
I'll attach each bullet varifocal option, in case someone wants to see them.