VIOFO RTC300 TELEPHOTO CAMERA FOR A229 PLUS/A229 PRO

[Augustus]

@viofo
Does the telephoto camera support 4:3 resolution? If so, can you develop a version compatible with the a229 pro?

It doesn't no, just the standard 16:9 resolution and the 21:9 that was added in firmware updates in the first half of last year

 

[ogzogz]

@viofo
Does the telephoto camera support 4:3 resolution? If so, can you develop a version compatible with the a229 pro?

Why do you want 4:3 resolution?

regardless of bitrate effect or video quality difference
I would like to see a combination of main camera 21:9 and telephoto camera 4:3.

It doesn't no, just the standard 16:9 resolution and the 21:9 that was added in firmware updates in the first half of last year

Yes, the resolutions in the current software are as you say. I'm curious about the 4:3 performance of the telephoto camera.

@VIOFO-Support

 

[Nigel]

Yes, the resolutions in the current software are as you say. I'm curious about the 4:3 performance of the telephoto camera.

One of the advantages of the telephoto is that it uses an exposure more suited to the registration plates, if you use 4:3, you are more likely to get sky in the image and worsen the exposure. I don't see the need for 4:3 from most of the examples posted...

Although it uses a 4:3 sensor, it may not use a 4:3 lens or CPL, although the CPL-500 is a rectangular polariser, (RPL?), so is probably fine.

 

[vvs49]

My idea for a new DVR!!
Install a front camera like the iPhone 15-16 Pro Max, but with two lenses!!
Telephoto and ultra-wide-angle, and in one case, and with the ability to switch cameras!
Here are some comparative screenshots from my hand - the iPhone telephoto lens and the 329, so the quality is not very good!!

 

[Nigel]

Install a front camera like the iPhone 15-16 Pro Max, but with two lenses!!

Why not have the wide angle lens as well?
If the iPhone has three lenses then the Viofo should have 3 lenses!
But maybe make the wide angle 180° so that when exiting from a side road, it can see both directions down the main road...

 

[vvs49]

Why not have the wide angle lens as well?

It would be great to take a ready-made matrix from a16 with its optical zoom and get iPhViofo!! 🙂

 

[ogzogz]

Hi,

The weather is getting warmer. I am experiencing focus changes while recording with a telephoto camera during the day under the sun.

When I parked and checked the time-lapse recording I started, I noticed a difference between the beginning and the end.

We encountered a similar situation with the A119 mini 2. Therefore, the lens was updated in later devices..
Has anyone experienced this with a telephoto? Or can you try it and share your experiences?

 

[Nigel]

Hi,

The weather is getting warmer. I am experiencing focus changes while recording with a telephoto camera during the day under the sun.

When I parked and checked the time-lapse recording I started, I noticed a difference between the beginning and the end.

We encountered a similar situation with the A119 mini 2. Therefore, the lens was updated in later devices..
Has anyone experienced this with a telephoto? Or can you try it and share your experiences?

Is the focus change only visible while parked in the sun? Or does it also happen while driving in the sun?

I think a small focus change when parked in hot weather should be expected on the telephoto, the focusing needs to be a lot more accurate for a telephoto lens than for an A119 lens, so a focus shift will be more visible. As long as it returns to normal when it cools down again then I wouldn't worry, you are not often going to need the telephoto video while parked anyway, cars that hit your car in a car park tend to move quite slowly and be caught by the normal lens?

 

[ogzogz]

Is the focus change only visible while parked in the sun? Or does it also happen while driving in the sun?

I think a small focus change when parked in hot weather should be expected on the telephoto, the focusing needs to be a lot more accurate for a telephoto lens than for an A119 lens, so a focus shift will be more visible. As long as it returns to normal when it cools down again then I wouldn't worry, you are not often going to need the telephoto video while parked anyway, cars that hit your car in a car park tend to move quite slowly and be caught by the normal lens?

I am in favor of not using the telephoto camera while parked. I even suggested adding an option to the menu just like an IR camera. I only encountered it during fast recording in the parking lot for testing purposes.

It is a bit difficult to notice this while driving. Because the image is formed in a constantly changing narrow area. However, since this is related to the camera temperature, it will also happen while driving.

In summary, the fact that there is a focus shift in the lens during the recording made for testing purposes does not change.

 

[Nigel]

I even suggested adding an option to the menu just like an IR camera. I only encountered it during fast recording in the parking lot for testing purposes.

I can understand people wanting to record the IR cabin camera when parked, but I would prefer to turn the telephoto off and get more recording time from the battery and storage!. Unless you are using your parked vehicle for long distance surveillance then it is not going to be much use when parked!. This will be sorted for the A329 since the telephoto plugs into the A329 cabin camera socket 🙂

 

[ogzogz]

I can understand people wanting to record the IR cabin camera when parked, but I would prefer to turn the telephoto off and get more recording time from the battery and storage!. Unless you are using your parked vehicle for long distance surveillance then it is not going to be much use when parked!. This will be sorted for the A329 since the telephoto plugs into the A329 cabin camera socket 🙂

I can't explain it any other way that I didn't use the telephoto camera while parked. This was just a simple lens and temperature test. For me, the lens focus shift or variability is a problem. Just like the a119 mini 2. If I have to write again, there is no need for a telephoto camera while parked, but when tested, the lens has a focus problem.
So you forgot your parking record. The problem also occurs while driving.

This is clearly valid for the a229.

If the a229 has an option not to record the IR camera while parked, it would be good if the telephoto is used instead of the rear camera, so that it can be turned off for telephoto while parked. In short, I can say that there were some problematic pros and cons that contradict logic because the telephoto is instead of the rear camera in the a229 and it is the first telephoto camera..

I think these bugs will be fixed in the new a329 series. At least that's what I'm testing for. And as always, solutions or suggestions for the problems we found in the previous series cameras appear in the next series.

 

[ogzogz]

Hi,

The weather is getting warmer. I am experiencing focus changes while recording with a telephoto camera during the day under the sun.

When I parked and checked the time-lapse recording I started, I noticed a difference between the beginning and the end.

We encountered a similar situation with the A119 mini 2. Therefore, the lens was updated in later devices..
Has anyone experienced this with a telephoto? Or can you try it and share your experiences?

@VIOFO-Support

I reported here about the telephoto camera overheating and focus shifting issue.

The telephoto camera for the a329s series was manufactured with air vents.

This means there is overheating, and the vents were created for ventilation.

Will the a229-compatible telephoto cameras be updated to air vent versions in the future?

 

[SafeDriveSolutions]

@VIOFO-Support

I reported here about the telephoto camera overheating and focus shifting issue. The telephoto camera for the a329s series was manufactured with air vents.

This means there is overheating, and the vents were created for ventilation.

Will the a229-compatible telephoto cameras be updated to air vent versions in the future?

Have you conducted heats tests with equipment that tests the heat of both cameras ? Or are you guessing that the vents make a difference? I am asking for my knowledge.

 

[ogzogz]

Have you conducted heats tests with equipment that tests the heat of both cameras ? Or are you guessing that the vents make a difference? I am asking for my knowledge.

As I've mentioned in previous posts, I noticed a change in the sharpness of a text I identified in the first and last videos of a vehicle parked in the sun.

I didn't check any temperature readings.

Since I hadn't received the A329 S series, I couldn't test it.

The lack of a vent in an existing camera, the mention of focus loss due to this, and the subsequent presence of vents in a telephoto camera designed for the A329s series are sufficient evidence to suggest a difference.

In short, it's likely that focus shifting occurs during overheating. We all noticed this on the A119 Mini 2, and the lens was replaced.

Therefore, I'm curious to see if there will be an improvement in the A229 telephoto series.

 

[ogzogz]

The vehicle leaves the garage and is parked in the sun. The camera has just been initialized.
The one on the left is the moment the recording starts. The one on the right is about 1 hour later..

 

[Karagandinez]

I have two RTC300 telephoto cameras in use. Both last summer and this year the air temperature rose above +35°C.
No focus shift was noticed on either telephoto camera. I monitor focus shift on all my copies and if focus shift had appeared,
I would have written about it a year ago.

To see the focus shift, high temperature is not necessary. Room temperature is enough.
Focus shift on the Mini 2 was detected when it was used in a room at +22°C for 90 minutes.

Comparison of RTC300 and RTC420 is a bit incorrect. RTC300 has its own processor and firmware.
RTC420 does not have this and the holes in the case are more for beauty than for cooling.

If RTC300 had a focus shift due to heating, then all A229 Pro/Plus users who have a rear camera RE200 would have complained about it here long ago.

 

[ogzogz]

I read your post with my camera today. I hope it gets fixed.

Maybe there's a problem with my camera, because the image above shows it.

Technically, we know which camera has which processor.

Maybe the lens is faulty? Maybe it's a CPL filter?

Now, let's get to the holes. We haven't heard of holes being used for aesthetic purposes.

It's hard to believe that someone who has no problems with their own camera won't have problems with someone else's.

This is, unfortunately, a huge problem in the world.

Keep adding as you get applause. Okay?
I will read this to my camera.

 

[ogzogz]

Camera replacement approval was received for the user who had problems with focusing.
When evaluated from a user-oriented perspective, I can say that my doubts about this camera have been proven true.

D

Post in thread 'Does the focus seem correct?'

Nov 27, 2025

That's good news. How did you get in touch about this? Could you share some details?

I contacted AliExpress, the online shopping mall where I purchased the product, and sent a video to Viofo. Viofo reviewed the video and responded that they would confirm the details and send me a new product.

• dacddong

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