Lens Comparisons 4mm, 6mm, 12mm
- Thread starter pcmcg
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motion2082
n3wb
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Please post more people, very interested in this thread
icerabbit
Getting the hang of it
Agreed.
Ideally I'd love to see some side by side outdoor images highlighting the difference between 2-4-6-12mm.
We pretty much know what 2 - 2.8 does, as in cover the widest area without going fish-eye, that 4 seems default, but there aren't any specs out there for this brand as to what angle they cover, nor any photos highlighting how much closer they bring something.
Ideally I'd love to see some side by side outdoor images highlighting the difference between 2-4-6-12mm.
We pretty much know what 2 - 2.8 does, as in cover the widest area without going fish-eye, that 4 seems default, but there aren't any specs out there for this brand as to what angle they cover, nor any photos highlighting how much closer they bring something.
4mm vs. 12mm
Here are two images from 2032 cameras pretty much mounted coaxially. For references, look at the large wood marker next to the driveway. The first camera has a 4mm lens. The second has a 12mm lens and is designed specifically to record license plates.
Here are two images from 2032 cameras pretty much mounted coaxially. For references, look at the large wood marker next to the driveway. The first camera has a 4mm lens. The second has a 12mm lens and is designed specifically to record license plates.
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icerabbit
Getting the hang of it
Thanks for sharing mjb.
That setup is right in line with my personal ideas/needs.
I'm actually a bit surprised the 12mm isn't a bit tighter. The viewing width at the post is, what, 30ft wide (if the gap at the posts is 10) at 100+ft away?
That setup is right in line with my personal ideas/needs.
I'm actually a bit surprised the 12mm isn't a bit tighter. The viewing width at the post is, what, 30ft wide (if the gap at the posts is 10) at 100+ft away?
Here is a 2032 bullet 4mm vs 6mm in the same exact location. Currently using the 6mm. In the nighttime pics, I am using a 48led ir illuminator 5ft left of the camera. Mounted on a deck 4ft high. About 150ft from shed
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n4gry
Getting the hang of it
Today I was moving some cameras around and checking them out before remounting them... So I was pointing them out the window and taking snapshots... I thought I would share some..
1. Hikvision 2032 4mm
2. Going X39C20M 6mm
3. Anran 16mm
4. IQinvision 50mm
View attachment 578 View attachment 579 View attachment 580 View attachment 581
I know the Anran is out of focus at that distance but not in it's normal use at 25-30' from the camera.
1. Hikvision 2032 4mm
2. Going X39C20M 6mm
3. Anran 16mm
4. IQinvision 50mm
View attachment 578 View attachment 579 View attachment 580 View attachment 581
I know the Anran is out of focus at that distance but not in it's normal use at 25-30' from the camera.
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n4gry
Getting the hang of it
The top of the driveway (that you can see in the pictures) is about 1/8th of a mile from the camera. I don't think IR will work quite that far but that is only one camera (the IQinvision w/50mm lens) that covers the far driveway and I have that for LPR (license plate reader) day time only but it will trip after dark when you have headlights on.... Ha hahhahaha
The other cameras do not cover that far area. The Going cam has three large IR lights that can easily light up to 90 feet away from the camera. But are covering the front porch area that is about 35 foot away from where it is mounted. (When I get them all reinstalled)
View attachment 601
The Anran has four of the large IR's and can light up to 100' but it is covering the shed at about 25-30' from where it is mounted...
View attachment 602
I have been playing with an idea of a defused laser beam with a IR Filter.... Just a thought!
If they get close to the house at night it is lit up in IR...
The other cameras do not cover that far area. The Going cam has three large IR lights that can easily light up to 90 feet away from the camera. But are covering the front porch area that is about 35 foot away from where it is mounted. (When I get them all reinstalled)
View attachment 601
The Anran has four of the large IR's and can light up to 100' but it is covering the shed at about 25-30' from where it is mounted...
View attachment 602
I have been playing with an idea of a defused laser beam with a IR Filter.... Just a thought!
If they get close to the house at night it is lit up in IR...
icerabbit
Getting the hang of it
Somehow 
I figured that somebody with your level of setup was going be interested in seeing through the dark
I don't know, IR might maybe reach that far our, but at the cost probably of turning everything closer white.
The hikvision cams I have received and in mind, probably won't cover the distance and width I need them to cover, so I'm foreseeing some standalone IR help on a string. Which is what I did with some remote floodlights for human visibility. But that doesn't necessarily help night vision for the camera. Since I'm new to this stuff, I won't know till the cameras are hung.
I figured that somebody with your level of setup was going be interested in seeing through the dark I don't know, IR might maybe reach that far our, but at the cost probably of turning everything closer white.
The hikvision cams I have received and in mind, probably won't cover the distance and width I need them to cover, so I'm foreseeing some standalone IR help on a string. Which is what I did with some remote floodlights for human visibility. But that doesn't necessarily help night vision for the camera. Since I'm new to this stuff, I won't know till the cameras are hung.
icerabbit
Getting the hang of it
My 12mm bullet arrived. Hooked up temporarily, compared handheld side by side to a 4mm. Amazing difference in a way, after trialing a 2.8 and 4mm.
In the living room, pointing around, it only gives you a sliver and basically just shows the flat screen TV, instead of the whole wall ... haha.
I think this will work well for a driveway closeup and maybe a wildlife cam shooting over a bit of a distance into an open space in the back yard.
Ballpark guide, from the looks of it, if you have a 4mm and are curious what a 12 mm would show, divide the 4mm on screen image in 3 equally spaced columns and 3 rows (grid of 9); then the center rectangle is what the 12 mm shows.
I'll probably order a 2-12 dome next. More money, but enclosed protection and convenience of dialing in the FOV and focus.
In the living room, pointing around, it only gives you a sliver and basically just shows the flat screen TV, instead of the whole wall ... haha.
I think this will work well for a driveway closeup and maybe a wildlife cam shooting over a bit of a distance into an open space in the back yard.
Ballpark guide, from the looks of it, if you have a 4mm and are curious what a 12 mm would show, divide the 4mm on screen image in 3 equally spaced columns and 3 rows (grid of 9); then the center rectangle is what the 12 mm shows.
I'll probably order a 2-12 dome next. More money, but enclosed protection and convenience of dialing in the FOV and focus.
It isn't a comparison, I know, but here is a 2332 with 2.8mm lens in a small storage unit converted into a storage/utility room.
networkcameracritic
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Bows94z, thanks for posting that. I confirms that the 6mm does some sort of color shift over the 4mm (and 12mm). It's sort of like a purplish hue you would get from a bad IR filter but very faint, but still notifiable. I changed HUE down to zero and that seams to bring the colors back to normal. I wonder what they did different in the 6mm. Is it a design flaw in the lens, are they using a different IR cut filter?
catseyenu
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Are all Hikvision 2.8mm cameras blurry or is there a bad batch out?
http://www.cam-it.org/index.php?topic=8278.0
http://www.cam-it.org/index.php?topic=8278.0
fenderman
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Its a bad batch. I installed one that is fine. In fact the second one the OP got was fine...i guess whoever is installing the lens in not focusing them right..... @networkcameracritic provided a nice tear down step by step here http://www.ipcamtalk.com/showthread.php?98-Hikvision-DS-2CD2432F-IW-Dissassembly