SL2 strange behavior during timelapse capture

[Mdol]

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Hello,

I have observed a very strange behavior during a Timelapse capture. I'm considering to abandon my Nikon gear (D850 and Z7 with a lot of optics) to use only Leica SL2, but this kind of accident make me sceptical.

During a shot, the light metering has suddenly changed dramatically, and the aperture has been changed, even though the exif data doesn't show that. I was in A mode (aperture priority), fixed à F10. Sensitivity was also set to ISO 200.

As you can see on the 3 images in a raw (captured with interval timer at 3 seconds interval), the aperture is not the same (we can see the dust on the sensor on second and third shot). The first picture is ok, second has a far more long exposure (from 1/4s to 4s) and seems to be exposed identically (which is not possible). Third is underexposed, also with an smaller aperture than F10.

 What do you think ? Any idea ? Is that a (big) bug ?

Thanks for you help

Marcello

 

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[Mdol]

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[helged]

I have used SL2 for time lapse for days (continuously), without any exposure problems. I would run a few additional tests. If problems remain, there is something wrong with your body and/or lens - and I would contact your dealer or Leica.

Make sure that you have the latest firmware installed (although no problems with earlier FW version on my side). 

Edited August 3, 2020 by helged

[LeicaR10]

Mdol,  When I owned the SL2 this same thing happened to me.  I did what Helged suggested above only I did two extra things, I gently cleaned the contacts on my SL lens and then reset the camera via the menu.  That cleared to problem after testing.  Hope the issue gets resolved as the SL2 is most excellent camera system. r/ Mark

[Mdol]

Thanks for your inputs... I tried to clean the contacts but I have reproduced the problem after that... also with an other lens. So I will get in contact with Leica service.

[Pelu2010]

On 8/3/2020 at 11:56 PM, helged said:

I have used SL2 for time lapse for days (continuously), without any exposure problems. I would run a few additional tests. If problems remain, there is something wrong with your body and/or lens - and I would contact your dealer or Leica.

Make sure that you have the latest firmware installed (although no problems with earlier FW version on my side). 

How do you control the sunset and sunrise? how do you ramp them? 

[helged]

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14 hours ago, Pelu2010 said:

How do you control the sunset and sunrise? how do you ramp them? 

I rely on the camera's light meter; with -2/3 or -1 stop exposure compensation to avoid/reduce blown-out highlights. Works ok-ish with SL2 and S3.

A better method would be to use Timelapse+ View Intervalometer (https://digitalfilmmaker.net/timelapse-view-intervalometer/), automatically analysing the jpg-file of the last image and adjust the exposure of the following image accordingly, but this device doesn't - unfortunately - work with Leica bodies. One could either contact the developer Elijah Parker to check weather Leica (or Panasonic S1x; sharing much of the Leica SL interface/software) bodies can be supported. Or one can search for similar devices. In case of the latter, pass me a word, I have not been able to find a device compatible with Leica SL. 

[frame-it]

23 minutes ago, helged said:

I rely on the camera's light meter; with -2/3 or -1 stop exposure compensation to avoid/reduce blown-out highlights. Works ok-ish with SL2 and S3.

A better method would be to use Timelapse+ View Intervalometer (https://digitalfilmmaker.net/timelapse-view-intervalometer/), automatically analysing the jpg-file of the last image and adjust the exposure of the following image accordingly, but this device doesn't - unfortunately - work with Leica bodies. One could either contact the developer Elijah Parker to check weather Leica (or Panasonic S1x; sharing much of the Leica SL interface/software) bodies can be supported. Or one can search for similar devices. In case of the latter, pass me a word, I have not been able to find a device compatible with Leica SL. 

this one ? https://lrtimelapse.com/lrtpt/

[helged]

50 minutes ago, frame-it said:

this one ? https://lrtimelapse.com/lrtpt/

This one: https://timelapseplus.com/pages/view