S-log3 ISO 640 blinking

[jamiebird76]

I am just in the process of trying to shoot some S-Log3 footage instead of using PP1.  I am having some issues:

1. Some of the footage is super dark
2. Some of the footage looks completely blown out on the display

When i am recording I notice that the ISO is flashing 640 on the display and I am not sure what this means?

Camera details:
FX3
Log shooting enabled with Gamut3.cine/Log3
Flexible exposure mode
ISO set to ISO-Auto
Select LUT = s-log3

Additionally, if i enable log shooting I can only record externally at 1080p.  If i disable log mode shooting but enable s-log3 and Gamut3.cine in the picture profile I have 2160 available in the external output section.
 

[jamiebird76]

PP11, not PP1 as mentioned above.

[Pieter]

Don't have an FX3 so I'll only comment on what I know:

It is normal for S-Log footage to look really dull out of the camera. Needs grading in post to look nice.

Do you have shutter speed and aperture fixed? In S-Log3 the base ISO is 640 (pre-2.0 firmware, 800 after) so you can't go any lower than that. If the scene is overexposed, your camera can't compensate so ISO will start flashing to indicate the bottleneck.

[jamiebird76]

Thanks for the response.  I have the shutter and aperture fixed.  I am on firmware 2.02.

RE:  In S-Log3 the base ISO is 640 (pre-2.0 firmware, 800 after) so you can't go any lower than that. If the scene is overexposed, your camera can't compensate so ISO will start flashing to indicate the bottleneck
- In this case I guess the only option i have if shooting in s-log3 mode is to either

1. Add a stronger ND?
2. Close down my apeture so as the retain the 180 degree shutter angle?

As an aside, I figured out the recording externally issue as well.  When i have log shooting enabled I needed to disable the "Record Internally" on the output settings and this enabled the 2160p mode.

[Pieter]

56 minutes ago, jamiebird76 said:

In this case I guess the only option i have if shooting in s-log3 mode is to either

1. Add a stronger ND?
2. Close down my apeture so as the retain the 180 degree shutter angle?

Those are indeed your options.

[jamiebird76]

Thanks for the advice.