SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Yesterday, 11:09 AM
Will fly for food!
Burntpixel's Avatar
United States, GA, Acworth
Joined Jun 2013
1,706 Posts
Quote:
Originally Posted by Tahoe Ed View Post
Right now my shutter angle is set at 25 and it works with the ND 0.9 filter. My f-stop is running about 5.6-6.
Wow! A shutter angle of 25 degrees? Man that is slow. Rule of thumb is 24 FPS would need a 48 degree shutter. 30FPS would need a 60 degree shutter speed.

If you increase your shutter speed,you would not need the ND filter. What ISO are you shooting in?
Burntpixel is offline Find More Posts by Burntpixel
Reply With Quote
Sign up now
to remove ads between posts
Old Yesterday, 11:18 AM
DJI Support
Las Vegas/Lake Tahoe
Joined Feb 2010
9,682 Posts
Quote:
Originally Posted by Burntpixel View Post
Wow! A shutter angle of 25 degrees? Man that is slow. Rule of thumb is 24 FPS would need a 48 degree shutter. 30FPS would need a 60 degree shutter speed.

If you increase your shutter speed,you would not need the ND filter. What ISO are you shooting in?
Normally 200. And no, if I had my settings there the video is completely washed out and unusable. I tried, 172.5, 145 and 108, none of them worked. We are under flood watches for the next couple of days so I am not sure if I will be flying. I will play some more with it.
Tahoe Ed is offline Find More Posts by Tahoe Ed
Site Sponsor
Latest blog entry: Landing Gear Reset S800
Reply With Quote
Old Yesterday, 10:04 PM
Registered User
Joined Sep 2013
165 Posts
Quote:
Originally Posted by Burntpixel View Post
Wow! A shutter angle of 25 degrees? Man that is slow. Rule of thumb is 24 FPS would need a 48 degree shutter. 30FPS would need a 60 degree shutter speed.

If you increase your shutter speed,you would not need the ND filter. What ISO are you shooting in?
A shutter angle of 25 degrees at 24 FPS is 25/360/24 = a little over 1/360th of a second -- very fast for film. That almost eliminates motion blur and results in an almost stroboscopic image.

The typical film setup is 180 degree shutter. That translates to exposure for one-half of the frame rate (i.e., the shutter speed in seconds is 180/360 divided by the frame rate). For 24 FPS that is 1/48th of a second shutter speed. For 30 FPS it is 1/60th of a second, etc.

When I use the BMPCC I almost always have it at 180 degree shutter. For outdoor work with an ND filter I am usually at f/5.6 to f/11 to get the exposure I want.
econfly is online now Find More Posts by econfly
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion DJI F550 Hex Build, with 2-axis NEX-5N/GH2 Gimbal... GGoodrum Multirotor Talk 9560 May 27, 2014 11:06 PM
New Product CLD 2/3-Axis FPV Gimbal for mini cameras and GoPro crd FPV Talk 9 Jul 13, 2012 10:42 PM
Discussion DJI Spread Wings S800 and Zenmuse Z15 prices are out! tpnitro Multirotor Talk 120 Jun 19, 2012 01:27 AM
Wanted 3 axis gimbal on a budget =) Vyas FPV Equipment (FS/W) 3 Mar 20, 2012 10:57 AM
New Product CLD 2/3-Axis FPV Gimbal for mini cameras and GoPro crd Aerial Photography 2 Sep 12, 2011 06:44 PM