jsmith
Well-Known Member
Unavoidable but able to be reduced by using CPL FIlter. Only "Fix" is to put a non reflective pad on the dash.
Reviewing and Testing the Vantrue N4 Pro S
Unavoidable but able to be reduced by using CPL FIlter. Only "Fix" is to put a non reflective pad on the dash.
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
Here is a comparison across three cameras that are presently in my car. I was moving about 35mph in this freeze frame. I chose the frame where the one-way signs aligns most closely with the corner of the red KFC building to help make sure I was equi-distant in each video. This is not quite an "apples to apples" comparison because the A139 Pro only has HDR, the two Vantrue cameras have both HDR and PlatePix turned on. A more direct comparison would likely be turning PlatePix off for each camera.
Also of note: all three cameras are 4K.
N4 Pro S HDR on PlatePix on:
S1 Pro Max HDR on PlatePix on: I think exposure is set to EV = +0.3 (I should double check this)
Viofo A139 Pro HDR on:
And then I did 300% zooms on the KFC billboard. I went forward and backward a few frames to see if any one frame was sharper than the adjacent ones, but they pretty much all looked the same to me within the same video.
N4 Pro S: Softest of the images, no ghosting around the billboard outline, black lettering at the bottom almost readable.
S1 Pro Max: most contrast, most significant white ghosting around the billboard outline, black lettering at the bottom a bit easier to read, but tending toward becoming blobs.
A139 Pro: brightest of the images, mild white ghosting around the right side outline of the sign, black lettering at bottom least blob-like and easiest to read.
Also of note: all three cameras are 4K.
N4 Pro S HDR on PlatePix on:
S1 Pro Max HDR on PlatePix on: I think exposure is set to EV = +0.3 (I should double check this)
Viofo A139 Pro HDR on:
And then I did 300% zooms on the KFC billboard. I went forward and backward a few frames to see if any one frame was sharper than the adjacent ones, but they pretty much all looked the same to me within the same video.
N4 Pro S: Softest of the images, no ghosting around the billboard outline, black lettering at the bottom almost readable.
S1 Pro Max: most contrast, most significant white ghosting around the billboard outline, black lettering at the bottom a bit easier to read, but tending toward becoming blobs.
A139 Pro: brightest of the images, mild white ghosting around the right side outline of the sign, black lettering at bottom least blob-like and easiest to read.
Last edited:
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
Here is another scene where I am stationary in a turn lane and traffic is passing by on the right at 35-40MPH. Here is the original scene - I chose this one because of the nice black Corvette Stingray with side exhaust pipes going by.
This is really the only way that I can capture license plates as Pennsylvania only requires a rear plate, so I can't grab plates from oncoming traffic. Plus doing this, I can play with the video and determine (roughly) the distance at which the rear plate transitions from "readable" to "not readable" by looking earlier and later in the video feed while I'm sitting stationary at the light. In most cases, it's really just a matter of a few frames to move from readable to not not readable..
The following three images are 300% zooms of the black Stingray in the adjacent lane. All three images are advanced to nearly the very same frame for the best comparison - the back line representing the seam in the concrete roadway is aligned with the right hand side of the rear bumper. All three images result in a readable license plate.
N4 Pro S HDR on PlatePix on. This looks like the cleanest image overall.
S1 Pro Max HDR on PlatePix on. HDR and compression artifacts are most evident in the outline of the shadow of the car on the road and the vehicles at the car dealership in the background.
A139 Pro HDR on. This image shows the most flare from the sun in the wheels, the left bumper chrome, and more ghosting in the outline of the cars in the background.
This is really the only way that I can capture license plates as Pennsylvania only requires a rear plate, so I can't grab plates from oncoming traffic. Plus doing this, I can play with the video and determine (roughly) the distance at which the rear plate transitions from "readable" to "not readable" by looking earlier and later in the video feed while I'm sitting stationary at the light. In most cases, it's really just a matter of a few frames to move from readable to not not readable..
The following three images are 300% zooms of the black Stingray in the adjacent lane. All three images are advanced to nearly the very same frame for the best comparison - the back line representing the seam in the concrete roadway is aligned with the right hand side of the rear bumper. All three images result in a readable license plate.
N4 Pro S HDR on PlatePix on. This looks like the cleanest image overall.
S1 Pro Max HDR on PlatePix on. HDR and compression artifacts are most evident in the outline of the shadow of the car on the road and the vehicles at the car dealership in the background.
A139 Pro HDR on. This image shows the most flare from the sun in the wheels, the left bumper chrome, and more ghosting in the outline of the cars in the background.
Last edited:
jsmith
Well-Known Member
HDR and PlatePix aren't intended for daytime use but the images aren't bad across the board.
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
I'm thinking I'll turn off PlatePix and make another daytime comparison, then do the same with HDR. I should also turn off HDR and PlatePix and compare those as well. It's clear that these three cameras are all performing at a pretty high level, I'm nit picking on details. You should have seen how much research I did when selecting a DSLR camera... 😉
jsmith
Well-Known Member
I turned off HDR and PlatePix on both the S1 Pro Max and N4 Pro S to see how they do at night and to analyze which images I feel are best.
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
It was long ago, but I ended up with a full frame Canon 6D that still makes awesome images. I ended up renting and borrowing several bodies along the way to play with them. The focusing system isn’t as fast as today’s stuff, but I don’t need that now that the kids are older and don’t play sports any more.
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
This next set of posts contains another series of images with various camera settings across three 4k cameras.
This first series is with a Vantrue N4PS, Vantrue S1 Pro Max, and Viofo A139 Pro. All image processing is turned off: No HDR, No PlatePix, only a circular polarizer is installed on each camera. Exposure was adjusted to EV = 0.0 for each camera. I was trying to make this as even as possible with "default" settings out of the box. I was sitting at a traffic light waiting for a left turn and the traffic in the adjacent lane was moving at about 35MPH. I aligned the shadow from the rear of the car with the seam in the concrete roadway, so this comparison is very precisely the exact same frame and distance from my car across each of the three cameras. The car that is passing by has a North Carolina plate, which is red letters on a mostly white background. I have three sets of comparison images for three camera, so here we go.
Full frame image from the N4 Pro S: No HDR, No PlatePix
Full frame image from the S1 Pro Max: No HDR, No PlatePix
Full frame image from the A139 Pro: No HDR
Then I did a 200% crop of the rear of the car that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. This seemed to be close to the inflection point between where the plate was clearly readable and where it began transitioning to noticeably less readable. The rear plate is largely readable from each camera.
200% crop from the N4 Pro S: No HDR, No PlatePix
200% crop from the S1 Pro Max: No HDR, No PlatePix
200% crop from the A139 Pro: No HDR
And, just to make things interesting, I advanced each of the 200% crops above by 10 frames (about 1/3 of a second) and then made 300% crops of just the rear plate to see what happens. It looks like the N4PS and the A139P are a pinch easier to read than the S1PM, but they are pretty close. The actual plate is "XVC 6925" - here are those results:
300% crop N4 Pro S: No HDR, No PlatePix
300% crop S1 Pro Max: No HDR, No PlatePix
300% crop A139 Pro: No HDR
This first series is with a Vantrue N4PS, Vantrue S1 Pro Max, and Viofo A139 Pro. All image processing is turned off: No HDR, No PlatePix, only a circular polarizer is installed on each camera. Exposure was adjusted to EV = 0.0 for each camera. I was trying to make this as even as possible with "default" settings out of the box. I was sitting at a traffic light waiting for a left turn and the traffic in the adjacent lane was moving at about 35MPH. I aligned the shadow from the rear of the car with the seam in the concrete roadway, so this comparison is very precisely the exact same frame and distance from my car across each of the three cameras. The car that is passing by has a North Carolina plate, which is red letters on a mostly white background. I have three sets of comparison images for three camera, so here we go.
Full frame image from the N4 Pro S: No HDR, No PlatePix
Full frame image from the S1 Pro Max: No HDR, No PlatePix
Full frame image from the A139 Pro: No HDR
Then I did a 200% crop of the rear of the car that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. This seemed to be close to the inflection point between where the plate was clearly readable and where it began transitioning to noticeably less readable. The rear plate is largely readable from each camera.
200% crop from the N4 Pro S: No HDR, No PlatePix
200% crop from the S1 Pro Max: No HDR, No PlatePix
200% crop from the A139 Pro: No HDR
And, just to make things interesting, I advanced each of the 200% crops above by 10 frames (about 1/3 of a second) and then made 300% crops of just the rear plate to see what happens. It looks like the N4PS and the A139P are a pinch easier to read than the S1PM, but they are pretty close. The actual plate is "XVC 6925" - here are those results:
300% crop N4 Pro S: No HDR, No PlatePix
300% crop S1 Pro Max: No HDR, No PlatePix
300% crop A139 Pro: No HDR
Last edited:
jsmith
Well-Known Member
A139 Pro appears to do better in this test. It's often a tradeoff due to contrast and lightening conditions where one camera shines over another in a given test.
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
This second series is with a Vantrue N4Pro S, Vantrue S1 Pro Max, and Viofo A139 Pro. HDR image processing is turned ON for each of the three cameras and a circular polarizer is installed on each camera. Exposure was adjusted to EV = 0.0 for each camera. I was sitting at a traffic light waiting for a left turn and the traffic in the adjacent lane was moving at about 35MPH. Like the set above I aligned the shadow from the rear of the car with the seam in the concrete roadway, so this comparison is very precisely the exact same frame and distance from my car across each of the three cameras. This time, the car that is passing by has a Pennsylvania license plate, which has blue letters on a mostly white background. This plate is covered by a smoke-colored plastic license plate cover which is picking up a little bit of sun glare.
With the full frame image, the two Vantrue cameras have more saturated colors. The S1 Pro Max has the darkest image of the three with HDR enabled.
Full frame image from the N4 Pro S: HDR ON, No PlatePix
Full frame image from the S1 Pro Max: HDR ON, No PlatePix
Full frame image from the A139 Pro: HDR ON
Then I did a 200% crop of the rear of the car that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. The rear plate is largely readable from each camera. The darkness of the S1 Pro Max makes the plate hardest to read and the brightness of the A139 Pro makes it easiest to read.
200% crop from the N4 Pro S: HDR ON, No PlatePix
200% crop from the S1 Pro Max: HDR ON, No PlatePix
200% crop from the A139 Pro: HDR ON
And, like before, I advanced each of the 200% crops above by 10 frames (about 1/3 of a second) and then made 300% crops of just the rear plate to see what happens. It looks like the A139 Pro is the easiest to read (though, it's not great - I can read the four digits at the end, but not the three letters at the start), and the two Vantrue images are not as readable. The actual plate is "KXS 9986" - here are the results:
300% crop N4 Pro S: HDR ON, No PlatePix
300% crop S1 Pro Max: HDR ON, No PlatePix
300% crop A139 Pro: HDR ON
Next up are comparisons with PlatePix enabled on the Vantrue cameras.
With the full frame image, the two Vantrue cameras have more saturated colors. The S1 Pro Max has the darkest image of the three with HDR enabled.
Full frame image from the N4 Pro S: HDR ON, No PlatePix
Full frame image from the S1 Pro Max: HDR ON, No PlatePix
Full frame image from the A139 Pro: HDR ON
Then I did a 200% crop of the rear of the car that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. The rear plate is largely readable from each camera. The darkness of the S1 Pro Max makes the plate hardest to read and the brightness of the A139 Pro makes it easiest to read.
200% crop from the N4 Pro S: HDR ON, No PlatePix
200% crop from the S1 Pro Max: HDR ON, No PlatePix
200% crop from the A139 Pro: HDR ON
And, like before, I advanced each of the 200% crops above by 10 frames (about 1/3 of a second) and then made 300% crops of just the rear plate to see what happens. It looks like the A139 Pro is the easiest to read (though, it's not great - I can read the four digits at the end, but not the three letters at the start), and the two Vantrue images are not as readable. The actual plate is "KXS 9986" - here are the results:
300% crop N4 Pro S: HDR ON, No PlatePix
300% crop S1 Pro Max: HDR ON, No PlatePix
300% crop A139 Pro: HDR ON
Next up are comparisons with PlatePix enabled on the Vantrue cameras.
Last edited:
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
I am not sure this is a correct statement - all three products are listed as using the very same 4k IMX678 sensor.
Viofo's webpage indicates the A139 Pro uses Sony Starvix 2 IMX678:
VIOFO A139 PRO 2CH First 4K HDR Front and Rear Dashcam with the Newest Sony STARVIS 2 IMX678 Sensor
First 4K HDR with Sony STARVIS 2 Sensor Dashcam Front: Sony STARVIS 2 Sensor 8MP 1/1.8 IMX678 Rear: Sony STARVIS Sensor 2MP IMX291 2 Channel 4K 3840x2160P 30fps + 1080P 30fps F1.6 Aperture 7 Elements Glass Lens 140°+ 170° Wide Viewing Angle Dual-Band Wi-Fi Built-in 2.4GHz & Upgraded 5GHz...
www.viofo.com
The Viofo A229 Pro uses Sony Starvix 2 IMX678
VIOFO A229 Pro 1CH 4K HDR Front Dash Cam with Sony STARVIS 2 IMX678 8MP Sensor Super Night Vision Voice Control 5GHz WiFi GPS
VIOFO A229 Pro 1CH — The Wirecutter-Endorsed 4K Sensor, Starting from One Camera The A229 Pro 1CH puts the same Sony STARVIS 2 IMX678 (1/1.8", 8MP) flagship sensor found in Wirecutter's #1 pick into a single front camera package. Record in 4K (3840×2160) with HDR for sharp daytime detail and...
www.viofo.com
And the Vantrue webpage indicates the N4 Pro S also uses Sony Starvix 2 IMX678
Vantrue N4 Pro S 4K 3-Channel Dash Cam | Front + Inside + 2.5K Rear | STARVIS 2, HDR, GPS, WiFi
Capture every angle with the Vantrue N4 Pro S 3-channel dash cam featuring 4K front, 1080P inside, and 2.5K rear video. Powered by triple STARVIS 2 sensors, HDR, and IR night vision. Includes WiFi, GPS, voice control, and optional LTE remote access for 24/7 protection
www.vantrue.com
jsmith
Well-Known Member
I think the Viofo wins this test. You'd need the Telescopic lens of the A329 to perfectly read the plate. However, the Viofo gives the best image. It looks like K(?)S 9986
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
This is the third series with a Vantrue N4Pro S, Vantrue S1 Pro Max, and Viofo A139 Pro. The individual camera settings are as follows:
Viofo A139 Pro: HDR is on
Vantrue N4 Pro S: HDR of OFF, PlatePix is ON
Vantrue S1 Pro Max: HDR is OFF, PlatePix is ON
Each of the three cameras has a circular polarizer installed. Exposure was adjusted to EV = 0.0 for each camera. I was sitting at a traffic light waiting for a left turn and the traffic in the adjacent lane was moving at about 35-40MPH. Like the two sets above I aligned the shadow from the rear of the car with the seam in the concrete roadway, so this comparison is very precisely the exact same frame and distance from my car across each of the three cameras. This time, the car that is passing by has a Pennsylvania license plate, which has blue letters on a mostly white background. There is no plastic license plate cover like in the image set above.
With the full frame image, the two Vantrue cameras have more saturated colors. The S1 Pro Max has the darkest image of the three with PlatePix enabled.
Full frame image from the N4 Pro S: HDR OFF, PlatePix is ON
Full frame image from the S1 Pro Max: HDR OFF, PlatePix is ON
Full frame image from the A139 Pro: HDR ON
Then I did a 200% crop of the rear of the truck that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. The rear plate is largely readable from each camera. The S1 Pro Max again produces the darkest image with the greatest amount of contrast on the plate, making it the easiest to read (by a pinch), followed by the N4 Pro S (which is also excellent), and the Viofo again produces the brightest images of the three, but the HDR setting appears to have created some ghosting on the left and right sides of the plate (which is still readable).
200% crop from the N4 Pro S: HDR OFF, PlatePix is ON
200% crop from the S1 Pro Max: HDR OFF, PlatePix is ON
200% crop from the A139 Pro: HDR ON
And, like before, I advanced each of the 200% crops above by 5 frames (10 frames was too much - no plate was discernible, so I'm assuming the truck was moving faster than the traffic in my previous two image sets) and then made 300% crops of just the rear plate to see what happens. All three plates below are fairly difficult to read. The lettering on the A139 Pro seems most fuzzy, but also a pinch easier to read (though not by much). The S1 Pro Max seems to blend the letters with the blue stripe above them more than the N4 Pro S does. The actual plate is "PA-WILDS" - here are the results:
300% crop N4 Pro S: HDR OFF, PlatePix is ON
300% crop S1 Pro Max: HDR OFF, PlatePix is ON
300% crop A139 Pro: HDR ON
Overall, these are VERY close results and it's difficult to call any one of them a consistent and clear winner. It really seems to depend on exactly what the circumstances are. All three cameras use the very same IMX678 4k sensor.
At some point, I'll attempt to make some night time comparisons. It's a surprising amount of work to make sure the cameras are all set exactly the way you want (I goofed this a time or two), and I had to make a few loops in the road until I was the lead car at the light and sat long enough for others to go by before my turn arrow turned green. Then making all of the captures and keeping them from getting mixed up. Sounds simple until you start doing it - it's really easy to mix things up.
Viofo A139 Pro: HDR is on
Vantrue N4 Pro S: HDR of OFF, PlatePix is ON
Vantrue S1 Pro Max: HDR is OFF, PlatePix is ON
Each of the three cameras has a circular polarizer installed. Exposure was adjusted to EV = 0.0 for each camera. I was sitting at a traffic light waiting for a left turn and the traffic in the adjacent lane was moving at about 35-40MPH. Like the two sets above I aligned the shadow from the rear of the car with the seam in the concrete roadway, so this comparison is very precisely the exact same frame and distance from my car across each of the three cameras. This time, the car that is passing by has a Pennsylvania license plate, which has blue letters on a mostly white background. There is no plastic license plate cover like in the image set above.
With the full frame image, the two Vantrue cameras have more saturated colors. The S1 Pro Max has the darkest image of the three with PlatePix enabled.
Full frame image from the N4 Pro S: HDR OFF, PlatePix is ON
Full frame image from the S1 Pro Max: HDR OFF, PlatePix is ON
Full frame image from the A139 Pro: HDR ON
Then I did a 200% crop of the rear of the truck that contains the license plate. Again, I advanced each video to the very same frame - the shadow is just past the concrete seam on the road. The rear plate is largely readable from each camera. The S1 Pro Max again produces the darkest image with the greatest amount of contrast on the plate, making it the easiest to read (by a pinch), followed by the N4 Pro S (which is also excellent), and the Viofo again produces the brightest images of the three, but the HDR setting appears to have created some ghosting on the left and right sides of the plate (which is still readable).
200% crop from the N4 Pro S: HDR OFF, PlatePix is ON
200% crop from the S1 Pro Max: HDR OFF, PlatePix is ON
200% crop from the A139 Pro: HDR ON
And, like before, I advanced each of the 200% crops above by 5 frames (10 frames was too much - no plate was discernible, so I'm assuming the truck was moving faster than the traffic in my previous two image sets) and then made 300% crops of just the rear plate to see what happens. All three plates below are fairly difficult to read. The lettering on the A139 Pro seems most fuzzy, but also a pinch easier to read (though not by much). The S1 Pro Max seems to blend the letters with the blue stripe above them more than the N4 Pro S does. The actual plate is "PA-WILDS" - here are the results:
300% crop N4 Pro S: HDR OFF, PlatePix is ON
300% crop S1 Pro Max: HDR OFF, PlatePix is ON
300% crop A139 Pro: HDR ON
Overall, these are VERY close results and it's difficult to call any one of them a consistent and clear winner. It really seems to depend on exactly what the circumstances are. All three cameras use the very same IMX678 4k sensor.
At some point, I'll attempt to make some night time comparisons. It's a surprising amount of work to make sure the cameras are all set exactly the way you want (I goofed this a time or two), and I had to make a few loops in the road until I was the lead car at the light and sat long enough for others to go by before my turn arrow turned green. Then making all of the captures and keeping them from getting mixed up. Sounds simple until you start doing it - it's really easy to mix things up.
Last edited:
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
Here are some comparisons of the rear images from the Vantrue N4 Pro S, Vantrue S1 Pro Max, and the Viofo A139 Pro cameras.
The Viofo and the S1 Pro Max rear cameras both have a rear polarizer fitted. The polarizer is the Viofo CPL-300 which is a flat, rectangular plate that sticks on with some adhesive pads. The N4 Pro S rear camera is naked and shows more reflections than the other two do. The sun in streaming directly in the rear window, so this is a "worst case" scenario for direct light.
Vantrue N4 Pro S - 2.5k camera, HDR is on, no polarizer:
Vantrue S1 Pro Max - 4k camera, HDR is on, Viofo polarizer installed:
Viofo A139 - 1k camera, no HDR, Viofo polarizer installed:
@Jeff_Vantrue: sorry for mounting a 3rd party polarizer on your rear camera, but it makes a very nice improvement! It would be GREAT if Vantrue had a polarizer that was dedicated to your rear cameras!
Here are the 200% zooms from each of the rear camera screen captures above. That 4K rear camera on the S1 Pro Max is a clear standout winner! The image quality is even better when mounted on the OUTSIDE of the car, but then the polarizer can't be installed...
N4 Pro S Rear image, 2.5k resolution, 200% zoom, HDR on: without a polarizer, the rear dash reflection obscures any chance of reading this license plate.
S1 Pro Max Rear Image, 4k resolution, 200% zoom, HDR on, 3rd party polarizer installed: it’s no surprise that the 4k camera renders the best image.
Viofo A139 Pro Rear Image, 1k resolution, 200% zoom, no HDR, Viofo CPL-300 rear polarizer installed:
The Viofo and the S1 Pro Max rear cameras both have a rear polarizer fitted. The polarizer is the Viofo CPL-300 which is a flat, rectangular plate that sticks on with some adhesive pads. The N4 Pro S rear camera is naked and shows more reflections than the other two do. The sun in streaming directly in the rear window, so this is a "worst case" scenario for direct light.
Vantrue N4 Pro S - 2.5k camera, HDR is on, no polarizer:
Vantrue S1 Pro Max - 4k camera, HDR is on, Viofo polarizer installed:
Viofo A139 - 1k camera, no HDR, Viofo polarizer installed:
@Jeff_Vantrue: sorry for mounting a 3rd party polarizer on your rear camera, but it makes a very nice improvement! It would be GREAT if Vantrue had a polarizer that was dedicated to your rear cameras!
Here are the 200% zooms from each of the rear camera screen captures above. That 4K rear camera on the S1 Pro Max is a clear standout winner! The image quality is even better when mounted on the OUTSIDE of the car, but then the polarizer can't be installed...
N4 Pro S Rear image, 2.5k resolution, 200% zoom, HDR on: without a polarizer, the rear dash reflection obscures any chance of reading this license plate.
S1 Pro Max Rear Image, 4k resolution, 200% zoom, HDR on, 3rd party polarizer installed: it’s no surprise that the 4k camera renders the best image.
Viofo A139 Pro Rear Image, 1k resolution, 200% zoom, no HDR, Viofo CPL-300 rear polarizer installed:
Last edited:
haiou_f
Active Member
- Joined
- Jan 2, 2024
- Messages
- 209
- Reaction score
- 92
- Location
- Shandong
- Country
- China
- Dash Cam
- viofo a229pro Vantrue n4s
I mean the sensor of the internal camera, not the front cameraI am not sure this is a correct statement - all three products are listed as using the very same 4k IMX678 sensor.
Viofo's webpage indicates the A139 Pro uses Sony Starvix 2 IMX678:
VIOFO A139 PRO 2CH First 4K HDR Front and Rear Dashcam with the Newest Sony STARVIS 2 IMX678 Sensor
First 4K HDR with Sony STARVIS 2 Sensor Dashcam Front: Sony STARVIS 2 Sensor 8MP 1/1.8 IMX678 Rear: Sony STARVIS Sensor 2MP IMX291 2 Channel 4K 3840x2160P 30fps + 1080P 30fps F1.6 Aperture 7 Elements Glass Lens 140°+ 170° Wide Viewing Angle Dual-Band Wi-Fi Built-in 2.4GHz & Upgraded 5GHz...
The Viofo A229 Pro uses Sony Starvix 2 IMX678
VIOFO A229 Pro 1CH 4K HDR Front Dash Cam with Sony STARVIS 2 IMX678 8MP Sensor Super Night Vision Voice Control 5GHz WiFi GPS
VIOFO A229 Pro 1CH — The Wirecutter-Endorsed 4K Sensor, Starting from One Camera The A229 Pro 1CH puts the same Sony STARVIS 2 IMX678 (1/1.8", 8MP) flagship sensor found in Wirecutter's #1 pick into a single front camera package. Record in 4K (3840×2160) with HDR for sharp daytime detail and...
And the Vantrue webpage indicates the N4 Pro S also uses Sony Starvix 2 IMX678
Vantrue N4 Pro S 4K 3-Channel Dash Cam | Front + Inside + 2.5K Rear | STARVIS 2, HDR, GPS, WiFi
Capture every angle with the Vantrue N4 Pro S 3-channel dash cam featuring 4K front, 1080P inside, and 2.5K rear video. Powered by triple STARVIS 2 sensors, HDR, and IR night vision. Includes WiFi, GPS, voice control, and optional LTE remote access for 24/7 protection
OP
OP
EricSan
Well-Known Member
- Joined
- Dec 28, 2023
- Messages
- 1,408
- Reaction score
- 1,066
- Location
- Central PA
- Country
- United States
- Dash Cam
- There are ALWAYS user serviceable parts inside!
Gotcha - I was confused with your posting. 😉 Sometimes I’m dense…
Last edited: