Do you compensate for frame rate on over/under crank exposure setting?

[dglasgal]

is anyone compensating extra f- stops when shooting high/low speed? We went with what we saw in the viewfinder / monitor at the time. We shot some stuff indoors and it came out darker that it did on the monitor. what do you think?

[Anders Holck]

It Depends on your shutter settings.
But if you shoot with a 1/180 degrees shutter and change from 24 fps to 48 fps you need to open up one stop.

[Barry_Green]

If you're using the syncro-scan "degrees" shutter, you have to compensate for exposure or else your exposure will be off. At 48fps you need to open up one full f-stop as compared to 24fps; at 12fps you'd need to stop down a full f-stop. But if you're using a fixed shutter speed (like 1/100) you don't need to compensate for exposure due to frame rate. However, your motion rendition won't be quite the same as a film camera's, if you're using a fixed shutter speed.

[dglasgal]

Thanks Barry. We had syncro scan set to "off". What shutter angle/ speed do you recommend for slow mo? What settings do you recommend to get light flashes/ blurs on intervalometer mode?

[Barry_Green]

For most film-style shooting it should be set to syncro-scan at 180.0d.

For light streaks etc., you don't really get that through the intervalometer, but you can get 1/2-second exposures if you set the camera into 2fps mode and use a 350-degree shutter.

[swfla]

is anyone compensating extra f- stops when shooting high/low speed? We went with what we saw in the viewfinder / monitor at the time. We shot some stuff indoors and it came out darker that it did on the monitor. what do you think?

Ok...I'm sorry If this a stupid question...just trying to get a handle on this subject. SO...because of the varying shutter degrees and frame rates...what might like good in the camera or monitor isn't necessarily what you are getting? 2nd question....What about if you play it back in the camera afterwards? Will that give you an honest representation in terms of exposure....again related to your VFR? Or am I just making this more complicated than it is?

Thnx...

[smokeybc]

Sorry Barry, I am trying to get the light streaks from traffic at night as well. Do you mean undercranking at 12 FPS mode? at a 350 degree shutter setting. I have not seen a way to do 2 frames per second.

Thanks

[jjb]

Sorry Barry, I am trying to get the light streaks from traffic at night as well. Do you mean undercranking at 12 FPS mode? at a 350 degree shutter setting. I have not seen a way to do 2 frames per second.

Thanks
Have a look here: http://www.dvxuser.com/V6/showthread.php?t=53032&page=3&highlight=2fps