Magenta shift at ISO100 shutter 1/8 on Alpha 6300

[360HDRi]

Is anyone else experiencing this?

I take bracketed exposure 360 degree images with a Sony Alpha 6300.  I've noticed that at shutter 1/8 ISO100, I get a nasty magenta wash over the image.

Looking back, all my pics since I purchased my ILCE-6300 have that problem. I want to check with the community to see if I'm the only one.

Best is to set your ISO to 100.

Set your shutter to continuous, 1/8 with brackets 3 shots 1 EV apart. (This will generate 3 captures: 1/4, 1/8, and 1/15).

Get a fairly dark exposure (under expose) since that's where it's most visible.

Open ARW in adobe camera raw and boost exposure  +5.

As you can see in the image below, the picture with shutter 1/8 is not good. Am I alone?

[Sean_Mc]

Hi there,

Hope some members of the community can answer your query.

If you believe you have an issue, I would recommend getting in touch with the support team here.

Best wishes,

Sean Mc

[360HDRi]

Hi Sean,

Thanks for your message.

I did contact the Sony support team. And they very quickly acknowledged there is a problem, but their solution was that I should send the camera for repair. So now it's a warranty issue.

I've replied, but my replies have been unanswered.

The bug I have has been there since the purchase of the camera. Once I noticed it, and identified the cause, I was able to look back at the first set of bracketed stills I took, in summer 2016, when I got the camera. And I see the problem was already present then on the ARWs. However the camera is no longer under warranty. The cost of repair per PrecisionCamera (Sony's repair facility in the US) is over 1/4 of the cost of the camera.

So I have to pay $250 to repair a camera that I purchased new, with a pre-existing problem. Sony support has yet to respond.

Secondly, I feel like this is a signal processing issue, not necessarily a sensor or firmware (especially since the bug is true across multiple firmwares) issue. I don't understand how that problem could manifest itself in such a narrow combination of parameters (changing the shutter or ISO removes it, or most of it). That's what I'm trying to answer with the community's help.

[Win_88]

Hi,

Since Sony themselves advised with a repair that means there's not much that you can do as a user in terms of troubleshooting steps to try and fix this. The camera will probably get inspected by an engineer to pinpoint the cause of the issue and repair it (there's only so much you can find out through remote support). So in terms of fixing the problem, I don't think there's a way around sending the camera for repair.

Win_88

[360HDRi]

Hi @Win_88,

Thanks for your reply.

I'm not trying to fix anything. It's clearly a problem I cannot fix.

I'm just trying to determine if I'm the only one with this issue, or if others have the same problem. The latter would suggest it's not a unique camera problem, but a broader issue with those sensors, or signal processing (code).

When all else remains equal the problem is only visible when 2 specific conditions are met: shutter 1/8, ISO 100. Shutter speeds before and after don't have de shift, and other ISOs don't have the shift.

Cheers,

360HDRi

[Win_88]

Hi @360HDRi

I sure hope more users who are able to test this can reply with some insight.

Win_88