Originally Posted by ScottieBoysName
I currently have a an RS2000 with Paladin DCR. I’ve been reading about running zoom in the RS2000, but every time I’ve tried this it chops off part of the image at the top and bottom. This is when watching scope content.
I could never figure out what I was doing wrong, but I believe now it’s just a misunderstanding on my part.
My experience with chopping off the image when running zoom in the projector over auto is due to me using Anamorphic C in the RS2000 in conjunction with my lens. Correct?
If I took the lens off, and didn’t have the projector in Anamorphic C, and changed from auto to zoom - it wouldn’t chop off the top/bottom correct? I’d only have to physically pan out a bit to capture the new added image width due to turning zoom on?
Or do I have my reasoning wrong?
I've been mulling over this myself for the last week. I now have my NX7 and DCR Lens, hopefully to be mounted over the week-end, so can play around with this.
Thinking through this:
In Auto, the pixels being used by the projector are 3840x2160 (1.78 aspect ratio).
In Zoom, scaling is done so that the image is effectively 4096 x 2304, to maintain the same 1.78 A.R. Since there are only 2160 pixel rows available vertically, 72 rows are cropped from the top, 72 rows cropped from the bottom. This yields a 4096 x 2160 image, which is 1.90 approximately.
With 16:9 content, since it uses the full 2160 pixel height, you will lose 72 rows top and bottom of actual content.
With 2.40:1 content, those 72 rows top/bottom are part of the black bars.
So with no DCR lens, watching 2.40:1 content, going from Auto to Zoom shouldn't cut off any content, and optical zoom will be needed to fill the screen since the Zoomed image is larger than the Auto image.
I think this is correct, but if I'm missing something or messed up the math, someone please correct me.
So, without the DCR lens, are you seeing any loss of content (cropping) with 2.40:1 movies, switching from Auto to Zoom? If you are, then I guess I have to rethink this completely. And if you are, are you re-zooming the lens to compensate for the change in image size?
What is not clear to me is how Anamorphic Mode C works, relative to the choice of Auto or Zoom in the Projector's Aspect Ratio setting. One of the main ideas behind that mode, and the DCR lens in particular, is that it's going to use the full 4096 pixel width of the chip. I'm not sure where this scaling takes place, and whether Anamorphic Mode C effectively supersedes whatever Aspect Ratio is chosen, whether Auto or Zoom.
You should be able to test this out (and I will as well, within a few days): when you're viewing 2.40:1 content, with the DCR Lens in place, and Anamorphic Mode C chosen - does switching from Auto to Zoom in the Aspect Ratio setting have any effect? I'm guessing no, but am not real confident.
Interesting stuff. I understand it much better than 6 months ago, but there are a few details that are still a bit fuzzy. And throw in the fact that Anamorphic Mode C apparently scales to 4096 x 2133, rather than 4096 x 2160, which I also don't quite grasp.