Black shading

[Marc Rochon]

Just got my new Dragon last week. I've been reading a lot about black shading and wondering if I need to worry about that now. I just got the camera should I black shade at some different shutter speeds and angles now?

-Marc

 

[Mark Wilkinson]

Do some reading around the boards here to get familiar with the idea.

If you commonly shoot at certain frame rates and shutter angles, a good idea would be to load them in to the internal options for fast access.

In my case, I commonly shoot at 24 (@180 degree shutter), 48 (@180) and 96 (@180) - that covers me most of the time - on other jobs, I plan ahead and have an external card loaded with various settings - black shading on set is a stressful 10 minutes IMO.

Watch your T/E colors and respect them - if it reads yellow, consider switching; if it reads red, assume you will have noise issues.

Happy Shooting!

 

[David Battistella]

Lots of good info here:

http://www.reduser.net/forum/showth...ent-wrong-if-anything-here-Dragon-noise-level

If you do any kind of firmware update the Dragon must be black shaded (in every set of release note instructions)

a black shading is directly related to shutter angle/time and sensor temperature. blackshading needs to be performed at working temperature, so it's good to perform one during prep after the camera is warm.

The T/E indicators let you know when the Temperature/Exposure are optimal.

You need to perform black shading for radical swings in shutter angle. IE: switching from 1 degree to 360 degrees would require 2 different black shading calibrations for optimal results.

Battistella

 

[David Battistella]

And here it is from the DSMC guide.

CAL: T/E INDICATOR
The CAL: T/E indicator shows changes to temperature (T) or exposure (E) in relation to the active calibrationmap. If the temperature or exposure change significantly, black shade the camera at the desired temperatureand exposure. Failure to properly calibrate the sensor may reduce image quality.
 Green: Sensor temperature or exposure are properly calibrated for current settings.
 Yellow: Slight change in sensor temperature or exposure.
 Red: Significant change in sensor temperature or exposure.
 The – and + indicate whether the sensor temperature or exposure has decreased or increased, respectively.NOTE: T and E indicators change colors independently of each other.

 

[Marc Rochon]

Thanks guys!!