A7RV ramping chaos with holy grail
Posted: July 25th, 2024, 11:31 am
Hi!
yesterday I tried a holy grail shot (sunset to sunrise).
Camera was set to M, 1/50, ISO 100, Fixed aperture of F13.
Spot metering in the foreground of the frame. As the (very low) sun was already in the frame, I manually underexposed the first shot to -2 EV to not blow too many highlights.
Settings in the App: Interval 20, Shots 999, Algo EV24h, Adjust +/- 0.0
Night limits: 15s, ISO800
Day limits: 1/4000, ISO100
It doesn't really get dark up here in the Arctic Circle as sun only sets for less than 2 hours these days. So I didn't expect any trouble with wrong metering or strange histogram reading, etc.
WHAT HAPPENED? After starting the holy grail TL function in the App, the Unleashed forced the camera to use a longer exposure than the starting exposure already after the first shot. And after each additional shot, the exposure was changed to a longer exposure again and again. (Always 1/3 stop per shot). After a few shots I stopped because the sky got blown out completely.
I read some comments about the ADJUST-Function in the App but I didn't find official/clear documentation about it. What is the intended behaviour using the EV24h algo?
1) Is the Unleashed supposed to "hold" the -2 EV all the time and ramp to keep this EV constant? (As -2 EV was my starting value from the first shot, set in camera)
2)Or do I have to set -2 EV as an ADJUST-value in the App? (I tried this one but then the Unleashed immediately ramped into the other direction, shortening the exposure, resulting in more than -2 EV)
3) Anything else?
What would be the correct (and working!) setup to achieve what I intended? (constant ramped -2 EV exposure during the entire timelapse shot)
Background:
- Unleashed22 M with A7RV, cable from Unleashed to HDMI installed - Firmware A/B 3.5.0, C 3.3.1
- App 3.2.0 on IOS 17.5.
- USB mode = PC Remote, FTP transfer disabled, No connection to any other Sony Apps or something like that, Still Img. Save Dest. = Dest. + Camera, 2M, HEIF, Small Size
- RAW+JPEG (HEIF) activated
- Gallery in the App works and can see all pictures from the camera after syncing
Finally I got the shot, using only the A-mode in the camera - same metering as described above. Everything turned out well - but I disconnected the Unleashed for this and used only in-camera-functions without any additional tools. But I want to use the Unleashed for longer nights, stars, Northen lights etc... so I want to get it fixed and work as intended.
by the way: the dark grey/almost black text input fields on this website on the black background are hardly visible on a Mac with Safari. Dark Mode/Light mode didn't make this any better. I struggled with the registration first and used a different browser to actually see the fields "a little bit better".
yesterday I tried a holy grail shot (sunset to sunrise).
Camera was set to M, 1/50, ISO 100, Fixed aperture of F13.
Spot metering in the foreground of the frame. As the (very low) sun was already in the frame, I manually underexposed the first shot to -2 EV to not blow too many highlights.
Settings in the App: Interval 20, Shots 999, Algo EV24h, Adjust +/- 0.0
Night limits: 15s, ISO800
Day limits: 1/4000, ISO100
It doesn't really get dark up here in the Arctic Circle as sun only sets for less than 2 hours these days. So I didn't expect any trouble with wrong metering or strange histogram reading, etc.
WHAT HAPPENED? After starting the holy grail TL function in the App, the Unleashed forced the camera to use a longer exposure than the starting exposure already after the first shot. And after each additional shot, the exposure was changed to a longer exposure again and again. (Always 1/3 stop per shot). After a few shots I stopped because the sky got blown out completely.
I read some comments about the ADJUST-Function in the App but I didn't find official/clear documentation about it. What is the intended behaviour using the EV24h algo?
1) Is the Unleashed supposed to "hold" the -2 EV all the time and ramp to keep this EV constant? (As -2 EV was my starting value from the first shot, set in camera)
2)Or do I have to set -2 EV as an ADJUST-value in the App? (I tried this one but then the Unleashed immediately ramped into the other direction, shortening the exposure, resulting in more than -2 EV)
3) Anything else?
What would be the correct (and working!) setup to achieve what I intended? (constant ramped -2 EV exposure during the entire timelapse shot)
Background:
- Unleashed22 M with A7RV, cable from Unleashed to HDMI installed - Firmware A/B 3.5.0, C 3.3.1
- App 3.2.0 on IOS 17.5.
- USB mode = PC Remote, FTP transfer disabled, No connection to any other Sony Apps or something like that, Still Img. Save Dest. = Dest. + Camera, 2M, HEIF, Small Size
- RAW+JPEG (HEIF) activated
- Gallery in the App works and can see all pictures from the camera after syncing
Finally I got the shot, using only the A-mode in the camera - same metering as described above. Everything turned out well - but I disconnected the Unleashed for this and used only in-camera-functions without any additional tools. But I want to use the Unleashed for longer nights, stars, Northen lights etc... so I want to get it fixed and work as intended.
by the way: the dark grey/almost black text input fields on this website on the black background are hardly visible on a Mac with Safari. Dark Mode/Light mode didn't make this any better. I struggled with the registration first and used a different browser to actually see the fields "a little bit better".