Dahua SD42212SN-HN 1080P Mini PTZ Dome Review

1080P PTZ cameras can be expensive and sometimes cost thousands. They also may require special power supplies and can be large. The Dahua SD42212SN-HN has 12x optical zoom, pans and tilts quickly,  can work with the included power supply or you can use a PoE+ injector, is smaller in size than other Dahua PTZ cameras and  comes with a street price of under $500.

Main Features

  • 5.1 mm~61.2mm lens (12x Optical zoom)
  • H.264 &MJPEG dual-stream encoding
  • 30fps@1080P & 60fps@720P resolution
  • DWDR, Day/Night (IR Cut Filter), Ultra DNR, Auto iris, Auto focus
  • Max 300°/s pan speed, 360° endless pan rotation
  • Up to 80 presets, 5 auto scans, 8 tours, 5 patterns
  • Alarm inputs (2), output (1)
  • Audio input/output
  • Intelligent 3D positioning
  • Micro SD card slot (card not included)
  • IP66 Ingres Protection
  • IK10 Vandal Resistant
  • -20ºC ~ 60ºC temperature range (-40ºC ~ 60ºC with heater on)

What comes in the box is the camera, a 24V power supply, CD, tool to remove dome, gloves, install template. They call this a mini PTZ dome, but don’t compare it in size to the mini dome I recently reviewed, this is going to be bigger. The camera on the left is a typical vandal dome, in this case the Hikvision ds-2cd2732f I reviewed a while back. The camera on the right is the Dahua SD42212SN-HN. It’s a little wider and a lot taller. What interesting to note is the lens is large, not the typical M12 lenses used in most vandal domes.

This camera permanently found a home att our weekend lake home where I used the optional cap and arm to mount it to the fascia board. You can mount the camera directly to an eave as long as it’s level to the ground. For testing by my garage, I mounted straight to the eave of the roof.

Dahua has become a PTZ leader in the industry with a large assortment of 1080P PTZ cameras. While this represents their affordable Eco-savvy Series, it’s far from a being a low end camera. The sensor and lens combine to give this camera very good low light performance. For example, I replaced a Hikvision mini bullet, even with IR LEDs on the bullet, the Dahua SD42212SN-HN has much better low light capability as you’ll see.

The closest comparison is the ACTi B95 I reviewed a year ago. The image quality, low light performance and resolution are comparable. What’s different is the size, the B95 is much smaller, same size as the Hikvision dome in pictured above.  The ACTi B95 uses less power and standard PoE (the Dahua requires PoE+) and the B95 was more responsive. A nod goes to Dahua for having 12x optical zoom vs. 10x optical zoom on the ACTi. But the ACTi is about $400 more expensive.

This is what the web interface looks like when you first log in. There’s the PTZ arrows buttons to pan and tilt the lens. The button in the center turns on 3d positioning. When this is yellow, you can click on the screen to move the lens around and draw a box with your mouse to zoom in. There’s buttons for zoom, foxus and iris.  Also a drop down where you can select a preset or a tour of presets.  There’s also options to take a snapshot, manually record, chose a stream.

To configure the camera, click on the Setup tab across the top. Under the camera menu are two items, Conditions and Video. Conditions is where you control image properties like brightness, contrast and such. Also this is where you set wide dynamic range (WDR) or backlight compensation (BLC) options as well as noise reduction.

The Picture sub-menu is where you can set the brightness, contrast, sharpness and such.

Under Exposure, you can set exposure compensation, shutter speed limits and such.

Under the Video menu, you can set the resolution, a max of 1080P for the main stream and max of D1 (704×480) for the sub stream. The sub stream comes in handy when live viewing the camera from your phone.

Also under the Video menu, under the Overlay tab, you can set what and where overlay text is displayed. In my case, I displayed time and  the channel title.

Under the Network -> TCP/IP menu item, you can set the IP address if you have not already done so with the Config Tool that’s included on the CD. Use that tool to find the camera initially ( with a user/password of admin/admin are the defaults).

The next sub-menu item down is Connection and that’s where you can change the ports if you need to. To use the camera remotely, you’ll need to port forward the HTTP, TCP and RTSP ports.

The PTZ menu item is next. I left the protocol at default, didn’t see a need to change it. The Function menu is where you set presets, tours and such. In this case, I set 4 presets. You click “add” to add a new preset, aim the lens where you want and then click the “save” button. To go to a preset, click on Live on the top menu bar, then select Presets under PTZ Function on the right and select the preset number you created and click “Go to”.

A “Tour” is a series of presets that you want to have repeat continuously. You click “+ Add”, give it a name, then add the presets you created above. To start the tour, click on Live on the top menu bar, then select Tours under PTZ Function on the right and select the tour number you created and click “Go to”.

You’ll need to set the time and time zone. I enabled the defaults NTP server and Daylight Savings Time and set the Time Zone for my area. Then click “Save” to save these settings.

Under the Playback tab on top, you can play back video recorded on an SD card if you installed one. It supports up to a 64GB microSD card. I would recommend a good heavy duty SD card like the Sandisk High Endurance made for surveillance cameras. The problem with SD cards is they have a limited amount of writes that can be done before the card goes bad. Sandisk claims to make one that has better write endurance. The larger the SD card you get, the less writes per sector are done, so you can double the life of the card by getting one that’s twice the capacity.  More detail HERE.



Now onto the images. I mounted the camera under the eave of my garage. Also mounted it at our lake home. As before, you can click on the image to see the full size 1080P image straight from the camera.

This image is taken at full wide angle and WDR turned off.

I set WDR to 10, a fairly low setting, but you can see more detail in the trash truck at the expense of less contrast in the image.

At night, with the camera in night mode, the image quality is pretty decent considering it’s using existing light.

With the camera left in color/day mode, the image is a little darker, but you get some sense of color. I would let it go to night mode in B&W.

Looking down the street, zoomed in more, no WDR, the image is quite good

Again, in color mode, a little darker, but you get a sense of colors like the red stop sign.

Now the prettier stuff, the camera mounted at the lake. This is with the zoom set to the widest angle. WDR turned off, and most importantly, because I want to have this viewed by several people, I set the bit rate real low at 2,048. Normally I set this to 6,144. The picture looks very good at the low bit rate where other brands like Hikvision tend to deteriorate if you set it this low. Bit rate is how you set how much compression you want based on how much bandwidth it should use.

I then zoomed in about half way, maybe 6x and panned to the left.

Then I zoomed in all the way to the homes across the lake. You do get some chromatic aberrations at full zoom but still pretty good.

I took this image at dusk as a screen snapshot off VLC player.

This is the image at night. Pretty good considering when you look out the window you see all blackness with some spots of light across the lake. The Hivksion ds-2cd2032-i that this replaces just showed a black screen with a few white dots.



I uploaded day and night videos to YouTube.   You must click on the gear icon and select 1080P quality and then click on the icon with 4 corners to see the video full screen. The videos were extracted from Milestone XProtect NVR software.

Day Video


Night Video  (both Color and B&W)



For a smallish PTZ dome, this camera has good clarity, decent low light performance, good color accuracy. I found the camera as low as $499.99 with free shipping from Wrightwood Surveillance, it’s definitely worth trying one out if you have a need for a PTZ.

For wiring convenience, I used a ZyXel PoE+ injector. Sturdy and solid, worked right off the bat, no problems. Costs more than some off-brands, but worth it since I’m not there to reset it if it stops working.

I did run into some issues initially with the firmware it came with. It would have occasional lags that lasted 3-5 seconds once in a while using the PTZ controls. I installed older firmware I got from Wrightwood Surveillance’s support forum and the camera worked as expected, minimal lag in the PTZ controls.

The pluses for this camera are;

  • Price & Value
  • Very good low light performance
  • Fast PTZ performance
  • 1080P  at 30fps or 720P at 60fps resolution
  • Day/Night IR Cut Filter
  • Ability to record to FTP or microSD card (not included)

The shortcomings for this camera are;

  • A little large to be called “mini”

Click HERE to go to the company web page for the camera.


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19 Comments on "Dahua SD42212SN-HN 1080P Mini PTZ Dome Review"

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I purchased this camera and was having the same lag issues at full 1080p resolution. I reached out to the company I purchased the camera from and they recommended a lower firmware. I pushed the firmware but now I cannot connect back to the camera. For some strange reason i seems the IP address keeps changing and I cannot login to the camera anymore. Anyone know how to hard or factory reset the camera? Or any other suggestions on how to get the camera working again?


You can use software to search the ip of camera,then you can get it work.


Good review, thanks.

I actually don’t find its image quality to be very good; seems inferior to the $100-150 3 MP hikvisions…? Obviously, detail cannot be compared as this has a nice optical zoom, but its sensor doesn’t seem terribly impressive in the daylight pics.

Mike Fattori

Don’t know if you are still looking for the answer to the webviewer question…but here it is…

The webviewer in Dahua cameras (and many others e.g. Samsung) uses the old Netscape API – which Google is phasing out. In Chrome 42 (released several weeks ago) Google disabled it by default but it can be re-enabled in Chrome://flags. When you re-enable it the webviewer will work again. However, in September it will be permanently removed.

Dahua and other manufactures will need to recode their webviewers to work without using the Netscape API.

This link describes what’s going on…




Great review!! I bought the camera from Wrightwood and all worked fine for months, then abruptly the web interface stopped working about two weeks ago. The camera still works via phone apps. I tried multiple PC’s in multiple locations to no avail. Is yours still working? Basically the web browser plug in no longer works and neither Wrightwood not Dahua have provided an answer.


Anawan, many of us had the same happen to our hikvisions two weeks back in Chrome. Maybe you’re having the same issue. In our case it’s because we were using Chrome and Google has almost completely shut down NPAPI support in that browser, something that Hikvision needs for its onboard functionality. Have you tried Internet Explorer? You can also try reenabling NPAPI, then shutting down Chrome, then try again:




I once owned this camera but I had 2 problems that made me switch to the Dahua DH-SD3282D-GN:
1. Narrow Wide Angle view of 5.1mm.
2. Lag when at full bandwidth & max resolution.


hello i am french, in a company selling dahua products, i read with pleasure this very interesting blog with very good tests. on this camera ptz dome sd42212sn-hn. i can add a remark, many supermarkets are interested by this ptz dome, and choose the version sd42C212sn-hn for interior without ip66,
to integrate within ceiling systems, for interiors, it is very discrete and you see just the dome bubble of the camera.


Looking to replace a few 4-year old fixed exterior domes with the latest and greatest. This looks like a good contender, although you seem to give the B95 an unconditional nod over it if I don’t mind spending the extra dough… is that right?

Main important things for me are low-light performance, zoom/resolution, and interface.

On the subject of interface, I am probably going to replace the DVR and cam server (Axis) too. Can you recommend a good plug-and-play box that handles both storage and streaming? I’d like to avoid throwing a Windows machine in the closet or anything super-complicated. Just an all-in-one solution with on-board storage and a great UI. Thoughts?

Many thanks!


thank you for the reply !!!


could tell us why (taking price out of the issue) you would choose a B95 over this one. Also why not opt for the 3mp or even 5mp? Thats something I may consider doing but need your thoughts


You mentioned you were using a PoE injector. Will the normal PoE switch not provide enough current or did I miss something?



Would be a great camera but I would like to if you could make a software review. I have now a Panasonic 202A, a HIKvision and if I get this one then there would be a another software for the camera.That is getting a pain. Panasonic software is useless HIK software is great, I love the future that you can go back from 30 seconds to 10 mins instantly right in the present screen. Of course Panasonic does not work in HIK software and don’t know if ivms5200 would work. iSpy is great for both cameras but misses the instant playback. Now the big question can you make a review for software with the feature instant playback?
Thanks Marc

Dennis Eversole

“But the ACTi is about $400 more expensive”

Not if you talk to your local ACTi RSM 😎 And you should ALWAYS talk to your ACTi RSM about doing a Project Registration. You will be shocked and amazed.

I am surprised that the Dahua unit takes PoE+, they are pretty good engineers over there. I am sure they will fix that in the next rev.

On the lens, does the documentation note the actual field of view? I cant seem to find that info online anywhere.