Feitelijk's SG9665GC

[Feitelijk]

Now, what is this? One trip and it was intermittently recorded. Missing some parts. Voltage problem?

00:06s -rwxr-xr-x. 1 peter peter 12094126 2016-02-17 11:57:26.000000000 +0100 /media/G9665/CARDV/MOVIE/2016_0217_115716_011.MOV
00:15s -rwxr-xr-x. 1 peter peter 30020598 2016-02-17 11:57:52.000000000 +0100 /media/G9665/CARDV/MOVIE/2016_0217_115738_012.MOV
00:10s -rwxr-xr-x. 1 peter peter 20123342 2016-02-17 11:58:22.000000000 +0100 /media/G9665/CARDV/MOVIE/2016_0217_115812_013.MOV
00:50s -rwxr-xr-x. 1 peter peter 101792022 2016-02-17 11:59:24.000000000 +0100 /media/G9665/CARDV/MOVIE/2016_0217_115834_014.MOV
00:28s -rwxr-xr-x. 1 peter peter 57844326 2016-02-17 12:00:04.000000000 +0100 /media/G9665/CARDV/MOVIE/2016_0217_115937_015.MOV

The trip back was recorded properly and I did not change anything. Didn't even touch the usb plug.

I pointed the cam down a bit (a lot), but this gives a lot of reflections and does not seem to fix the white sky. Besides that: I find my dash less interesting ...

 

[Street Guardian USA]

Do you have motion detection on or off? If on, turn it off. You should get the CPL

 

[Feitelijk]

No motion detection. And no I don't need the CPL if I point the cam at the horizon.
Pointing down means that the angle with the windscreen is less than the total reflection angle and you get all of the dash.

I think the WDR should try a bit harder at reducing intensities around the sun. No CPL is going to remedie that.

 

[jokiin]

what power supply, what memory card?

 

[Feitelijk]

Not the original SG powersupply. Not sure which cam it came from. GT300W or GT680W.
Memorycard is a 32GB sandisk ultra. (Yes I know)

 

[efoo]

Better try the SG stock cigarette charger-cable as well its supplied memory card first.
When I used my previous USB cable, it created some buzzing noise from radio frequency interference. Once I changed to SG better-shielded cable, the noise went away.
jokiiin has also recommended not to use Sandisk memory card in the past.

 

[Feitelijk]

Both items have functioned flawlessly for the last two months in the SG and for years on other cams.
Strange thing is that it was again fine on the trip back.

 

[jokiin]

we changed power cables 5 times before we got to the one we use now, stable power is very important for capacitor based cameras

 

[Feitelijk]

If it happens again I will change the powersupply.
For now I formatted the card, in an attempt to isolate the problem.

 

[efoo]

Both items have functioned flawlessly for the last two months in the SG and for years on other cams.
Strange thing is that it was again fine on the trip back.

It doesn't matter. Change to the SG stock power cable and memory card, and use them for at least the next couple of weeks, see if the strange behaviour happen again.

 

[Feitelijk]

Looks fine now.
But I guess it indeed was the power, since the rearcam also did not record that trip.

 

[Feitelijk]

Tried switching the WDR off , (which actually does not influence the night image)

Actually looks a bit better than WDR on in bright conditions, but it's hard to compare since the window was a bit dirty here:

 

[Feitelijk]

About that 40/60%...
Doesn't do much for that white sky...

 

[wozzzzza]

looks like you need a dashmat and/or CPL there

 

[Feitelijk]

Yes, if I stick that to the window the overexposure of the sky will be solved!

 

[Street Guardian USA]

I see sun glare. CPL would resolve.

 

[jokiin]

CPL will often improve, very hard to overcome completely though

 

[Feitelijk]

I see sun glare. CPL would resolve.

Yes you see dashboard glare, but I thought I had made it clear that that is not my grief.

CPL will not help as the light off the sky is not polarised. But I will put one in front of the lens to show you. (when it get sunny again here.)

The sky is completely overexposed, and not only the part where the sun is. This is exactly what the WDR is for, but I fail to see any effect of it in daylight. I see no difference WDR on or off.
Perhaps jokiin can explain what is is doing in the SG9665GC? Is it only used for nighttime enhancement? Should the sky there not be images on the shortest exposure?

 

[jokiin]

WDR benefits really only show at night

 

[efoo]

Yes you see dashboard glare, but I thought I had made it clear that that is not my grief.

CPL will not help as the light off the sky is not polarised. But I will put one in front of the lens to show you. (when it get sunny again here.)

The sky is completely overexposed, and not only the part where the sun is.

I find the CPL filter does reduce the sky overexposure slightly. The main point of a dashcam is to have a clear and correctly exposed scene of the cars and road in front of you. Don't worry too much about the sky if it is overexposed or underexposed, you are not here to take professional photography. If you are so concerned about the sky overexposure, you can adjust the camera angle more towards the sky, but it will then mean at times the cars and road will be dark when the cam is adjusting to the bright sky. Your choice.