Setting Up a Shot: Difference between revisions

Setting Up a Shot (view source)

Revision as of 23:18, 17 March 2010

252 bytes added , 17 March 2010

→‎Exposure: More on shutter speed

Simon.harris

confluence-users, domain users, jira-users, stash-users

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 This determines how much light enters the camera.  It is done by controlling '<u>Shutter Speed</u>' and '<u>Iris</u>' (referred to as 'aperture' in still photography).
-YSTV almost always uses a shutter speed of 50 per second.  Any slower and things appear to move indistinctly, any faster and you reduce the amount of light for no real advantage (in ''exceptionally'' bright light it may be necessary to make it faster).  The shutter speed is not on the main menu, you have to enter the detailed menu to alter it.  Press the 'menu' button, then from there go through P.Menu -> Camera Set -> Shutter Speed.
+YSTV almost always uses a shutter speed of 50 per second.  Any slower and things appear to move indistinctly, any faster and you reduce the amount of light. The only two times you might want to do this:
+* You're filming something that moves ''really'' fast and want the footage to blur less. If the view is still light enough after increasing the speed, go for it.
+* To stop on-screen monitors flickering, increase the shutter speed to 60. (Computer video pretty much always draws at 60Hz.)  The shutter speed is not on the main menu; you have to enter the detailed menu to alter it.  Press the ''Menu'' button, then from there go through ''P.Menu'' -> ''Camera Set'' -> ''Shutter Speed''.
 The iris is a physical barrier inside the camera which can be opened or closed (by internal motors) to limit the amount of light entering the camera, in the same way as the iris of an eye does.  Closing or opening the iris doesn't have any (significant) effects on the image recorded by the camera.  (Having it more open will reduce the 'depth of field' of the camera, but this isn't something that needs to be known.)