Super35 with Normal 35 groundglass?
Posted 11 November 2011 - 11:05 AM
And what would it look like if I recenter the lens port for super 35 but use a normal 35 groundglass? Or shooting normal35 and using a super35 groundglass.....?
And what is the reason for changing the bridge plate again?
Thanks for some input!
Posted 11 November 2011 - 12:46 PM
I was wondering why excactly one has to recenter the lens port when changing from normal35 to super35 or the other way round?
Because although the film negative size is the same, Super35 uses a larger and recentered gate, needed because its frame occupies the space on the negative that was used for optical soundtrack.
Posted 11 November 2011 - 12:50 PM
But if there is some corner fall-off, then the off-centered lens will show it more on one side.
It's a bigger problem with zooms since as you zoom in and out, the image will be drifting slightly to one side, so the operator would have to compensate. And zooms tend to have more corner fall-off too. And more flares as well, which will be off-centered (i.e. if you put the sun in the center of the image, the lens flares won't be centered around it.)
Posted 11 November 2011 - 12:51 PM
Posted 11 November 2011 - 07:30 PM
Many older lenses only just cover the Super 35 frame, so if they are not centred they may actually vignette on one side.
Using a ground glass that does not match the lens port position simply means your frames lines will be off.
The bridge plate needs to be recentred because the rails support accessories such as matte boxes and lens supports that need to be centred to the lens.
Posted 12 November 2011 - 03:24 AM
thanks to all of you!