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New DS-2CD2045FWD-I Darkfighter

FoxCR

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Good Morning everyone. I upgraded from an 8mp non DF model to the DS-2CD2045FWD-I.
This is a 4MP with Darkfighter technology. While the differences are not evident at first, I have to say that this is camera is great for low light and does a much better job at capturing images.

Images are much more discernible both in color and BW with less noise at a given F-stop.
I can only imagine how much better a 2MP could be, but for me 4MP seems to be a nice sweet spot for both day and night imagery.

DS-2CD2045FWD-I 4 MP IR Fixed Bullet Network Camera-Hikvision
 

FoxCR

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I will post some images and maybe video if I can find a way to host them later today.
In the mean time I want to share link to a white paper on what is darkfighter technology.
This helped my understand the advantage of cameras with this capability.

If anything, just having an inverted sensor and larger pixles per area (less mp in a a way) make all the difference.

https://ca.hikvision.com/sites/default/files/hikvision-darkfighter-technology_09-2016.pdf
 

Parley

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I have five the 2025 2mp versions of that camera and I like it a lot. IMHO it is a great value for the money and it works very well at night. Now I also have cameras with the 1/1.8 sensors which are better but they are also a whole lot more money. Again IMHO these are a great camera for the money.
 

FoxCR

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Hikvision 6mm ip cameras show down.
DS-2CD2085FWD-I 8MP Vs. DS-2CD2045FWD-I 4MP Darkfighter.

I made a quick video to understand the differences between these cameras when it comes to imagery both when a target is at rest and moving. What I learned is that I already knew. The 8MP is better during the day. However the darkfighter camera takes the show at low light / night time.

I am attaching an image after it got dark today. Car is 47' away from the camera 8' high on wall. Notice the prop at the front of the car.
 
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FoxCR

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Below are some images. 4mp camera on the right.
Notice how well you can read the plate on the BMW and see the detail on the yellow prop through the 8mp 6mm camera. Face recognition is also much better any distance - during the day. (on stationary targets see edit)

Take a look at the second image. Similar setup but in the dark, here the 4mp takes the show.

Edit: Through more testing I found that the Darkfighter camera can run one F-stop faster than the non-DF model and produce the same image in terms of brightness and thus minimize motion blur on moving targets. So yes, in some instanced the 8MP seem to produce a better image for stationary objects at a distance, but we are looking for moving threats.

47ft Away_6mm.JPG darkfighter Sensor.JPG
 
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Parley

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Here is my 2025 at night and is the 2MP version your camera. The main purpose of this camera is to watch the side of the house. I believe this one has the 6mm lens.

Camera 5 Side Yard.jpg
 
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FoxCR

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That looks good, but it seems as if you are getting some light shining into your yard, or is that just moon light on an clear night / full moon?
The image I posted above are with no light and no moon. Btw, how far is the camera from the back wall? I have to say that I have learned that static images do not tell the whole story - do you have happen to have a license place or small object you can place at the back wall ? I am interested to see how well it looks at night with your 2MP sensor - Is this it?

https://www.hikvision.com/en/Products/Network-Camera/EasyIP-3.0/2MP/DS-2CD2025FWD-I
 

FoxCR

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Here is a current image. It has rained a bit. There is only one light pole that barely put any light.


QNAP-CHOCOBO2_Ch8_4MP_6mm_2018-12-27_22-09-39.jpg
 

FoxCR

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Left non-DF vs DF. Both set to "day"
F-stop / Exposure = 1/25 non-DF and 1/30 for DF.

darkfighter Sensor_day.JPG
 

Parley

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That looks good, but it seems as if you are getting some light shining into your yard, or is that just moon light on an clear night / full moon?
The image I posted above are with no light and no moon. Btw, how far is the camera from the back wall? I have to say that I have learned that static images do not tell the whole story - do you have happen to have a license place or small object you can place at the back wall ? I am interested to see how well it looks at night with your 2MP sensor - Is this it?

DS-2CD2025FWD-I 2 MP IR Fixed Bullet Network Camera-Hikvision
Yes, that is the camera. There is a street light by the house behind me. However it is not all that bright. This camera is mainly only for facial ID. I have other cameras watching the streets and they will pick up license plates during the day and parked cars at night. Sometimes moving cars at night. However they have 1/1.8" and 1/1.9" sensors versus the 1/2.8" sensors on these cameras.

I am just trying to show what a 2MP camera in the same series looks like. Maybe tomorrow I will put an object by the wall. You can see the sprinkler head in the corner and the orange on the tree. The technology is slowly improving. I can see myself replace these with a 4MP/8MP in the future as the technology improves.
 
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FoxCR

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Thank you for posting the image, I think it will help people.
 

FoxCR

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I wish it were 9 am here.. half my day is gone..
Great photo.

I want to share the image below. I noticed that for the most past the 4mp DF camera seems to perform better than the standard sensor camera at a distance on MOVING objects. in addition, being more sensitive it can run at a faster shutter speed and produce nice clear images (brighter than its non DF counter part).
I may be buying on of the new 8MP DF cameras from china (oh well) to test in the next few weeks.

9am_Motion.JPG
 

emmjea

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Hi all - I am trying to find out how I can work out the spacing I need between cameras - i.e. the range, not the IR range, but I am assuming there must be a table / guide where I can work out various distances as a maxium to determine things like - see a person, see a face, see a number plate etc ? Bottom line - how do you figure how how far the camera can " see" ? Thanks
 

aristobrat

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Hi all - I am trying to find out how I can work out the spacing I need between cameras - i.e. the range, not the IR range, but I am assuming there must be a table / guide where I can work out various distances as a maxium to determine things like - see a person, see a face, see a number plate etc ? Bottom line - how do you figure how how far the camera can " see" ? Thanks
One way is to use the IPVM Camera Calculator V3 site. Type in your address, let it pull up a Google Maps image of your property, add a camera, set the camera model, position the camera, then you can drag a virtual person to various distances from the camera and see an estimate of the image quality. One of the stats it will show you is "PPF". The general recommendation is to have a PPF value of 100+ to identify someone you don't know.

If you Google around for "DORI calculator", you might find a similar resource. Dahua provides these numbers as part of the cameras specs, but the calculations they use are thought to be overly optimistic.
 

emmjea

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Thanks @aristobrat - much appreciate that advice - I did try that, (the IPVM) but it seemed to get stuck on a 2mm focal length lens - you could only select camera by angle, but in the right hand side stats summary is seemed to remain with a 2mm lens...so I lost a bit of confidence!
 
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