I braved the rain/snow and got my camera mounted the other day (SD49225T-HN). It replaced a Reolink RLC-423 and the first thing I feel worth mentioning is the auto-focus at night is remarkably better than the Reolink... like, doesn't even compare.
The Reolink would hunt/seek for a decent focus, and I would sit and watch it after zooming in on something, and it would go right past the best focal plane. Sometimes it would continue all the way through the range and then "snap" to the best focus it found, but more often than not it wound up focusing on... I don't know what. I'd have to manually tweak the focus near/far and it was so sensitive that it was just painful. Sometimes I could pan over where there was less foreground to confuse it and then pan back. But don't touch the zoom or the auto-focus would decide it needed to do something even if it was fine.
This Dahua though, I mean, yeah you'll see it hunt for the right focus, but it does so fairly fast and I haven't had a failure to focus in my testing.
This is only it's second night on the corner of my house... night one I switched it to color mode just to give the starlight feature a run for it's money. It's very impressive to see my dark cul-de-sac with only a few porch lights and some landscape lights to illuminate things, yet I can see at least as good as my old cam could in night vision.
For tonight I'm going with black-and-white and tweaking some gain values, backlight compensation, etc. Right now I've got it pointed at the interesting part of the street and it's lit up pretty good. The foreground of the frame, maybe 50 feet away, is nicely illuminated (the top of my driveway), and meanwhile I can see the side of my neighbor's garage across the street, maybe 150', and it's also lit just fine to where I can make things out pretty well, see the cars in his driveway, etc.
It's a tricky thing because in the foreground, taking nearly half of the frame, is a tree. I would just avoid it but my truck is parked on the street and I wanted to be able to see it through the branches (won't be able to do that come springtime). But even with those branches lit up, it's still doing a good job of keeping the rest of the image lit well, and it didn't focus on just those foreground branches, but really did seem to set the focal plane probably right in the middle of the street, if I had to guess. I'm only zoomed in about 1.5x (it says "1" but it is zoomed in a bit, just not x2 yet). So the focus isn't really a big problem at that zoom level anyway. But I can zoom in on specific features like license plates of cars parked and it'll pick it up just fine at different ranges.
A couple of things worth mentioning... of course using color mode at night means a slower shutter speed so you'll get motion blur. But still cool. I haven't tweaked shutter speeds in IR mode so I'm not sure just how fast a shutter I can get to avoid the blur and still get a nicely lit image, but I'll be testing that out over the next few nights.
I did find myself wishing this had a higher resolution... the 25x zoom (instead of the 4x like the Reolink) makes up for that a LOT but in it's "default" preset during the day, I do see the difference.
Also, the Reolink at 1x seemed to have a wider field of view than the Dahua at 1x.
The RLC-423 says it's 100° at 1x and the SD49225T-HN is only 59.2° so you really should keep that in mind when considering placement.
For me, the narrower FOV is a bummer, but I have coverage with other cameras and this one is mostly to capture the street but also be able to PTZ around to capture other things. So, while I can no longer see the street *and* my front porch from the corner of my house, I can still view the street and let my porch cam cover the front door. At some point maybe BI will have motion tracking and can follow delivery people down the driveway to my door, but that's just extra if/when that happens. The front door cam is going to be better at getting their faces anyway since they come up the steps and basically have to "smile for the camera" on their way up.
Mounting the camera to my house... the corner trim I have is only 3" wide and then goes to your basic lap siding... not great for trying to mount this on a corner. The RLC-423 wasn't much wider than 3" so I just attached half to the trim and the other half I used longer screws that reached the lap siding. Looked a little funny, but only up close, and it really couldn't "see" around the corner totally to see that other side of the house.
For the Dahua, I decided it really should extend out more, so it could see around the corner. I considered fashioning a metal bracket or buying one, but I didn't see anything that would really work for my situation. In the end, I went with a "keep it simple" solution and just took a ~ 6" x 6" x 1" thick piece of wood, painted it the same color as my trim, and predrilled some holes for the bracket arm to attach, and also pre-drilled holes where I'd attach that board to the existing trim.
Being ~ 6 inches wide, it sticks out from the corner of the house about 3" which is enough for the dome to easily see around the corner. Good... now I can spy on the meter reader when he pops by, from a weird overhead angle.
I like how it looks... I mean, it's a big dome sticking out from my house, but a corner bracket would have been even more "sticky outy" and I like that it's the same color as my trim, it was easy to make (I used extra wood/paint/screws/bolts I already had, so... free!) and easy to install.
Maybe I'll post a picture later if anyone was curious.
In summary, awesome camera, glad I got it. Wish lists would be "higher megapixel and wider 1x FOV" but I guess only if it didn't cost an arm and a leg for those.