Which difusion filter for which focal length?
Posted 09 August 2007 - 06:54 AM
performing the main part. I own a set of Schneideroptics "Classic-Soft-Filters", which I intend to use for the two films. In the past I used these filters more "unconscious" in this way: for wide shots the smaller numbers, an eighth or quarter, for close ups, the one or even the two.
Interestingly enough, there are a lot of colleagues, who are doing the opposite: Using the bigger numbers on wide shots and the smaller on close-ups.
What makes more sense and WHY?
Every explanation will apreciated! Thanks
Posted 09 August 2007 - 01:12 PM
Edited by Eric Gustavo Petersen, 09 August 2007 - 01:13 PM.
Posted 09 August 2007 - 06:34 PM
Looking at it this way you might even conclude that the magnification of lens diffusion cancels out the extra detail gained with larger image size (which is also true, up to a point). This is what allows to people to use the same filter, or no filter at all, on a zoom lens with acceptably consistent results.
But the reality is that not all lens sets match resolution through all focal lengths, and the distance to the subject (creating image size) isn't always the same. So you end up selecting your filter grade shot by shot, usually guided by focal length first (longer lens gets heavier filter) but also by the distance (shot size) and the subject itself. The best thing is to shoot some tests, and see what filter grades you need to match with focal lengths and shot sizes, to make your actress look good and consistent from shot to shot.
Posted 15 August 2007 - 04:38 AM
So, I will use my Classic Softs as I always did, but now I know WHY!