I have been considering creating a home theatre for a number of years now. I have read many threads in the AVS Forum during this time and will continue to do so, but I am going to need some advice.
My first concern at this early stage is knowing whether or not what I am considering is worth doing (regarding projector and screen).
I do not have a projector yet.
I am going to take things step by step, so before getting one I would first like to know if it would work in my room.
To get a large screen size to work in my room, I would definitely need a conversion lens.
However, I do not know if a conversion lens will maintain the original quality of a 4K or pseudo 4K projector (like JVC e-shift) with a 4K source (like UHD blu-ray).
Help with this will aid me in deciding if I can proceed with getting the projector and conversion lens.
While things may change, the projector that I am currently considering is the JVC DLA-X750R (aka DLA-RS500U).
The JVC X750R has a throw ratio of 1.4:1 to 2.8:1.
My room is small, only about 12 feet long (closer to 11’ 10”) and roughly 94” high. The front and back walls have framing over heating duct work that extends about 7” down from the ceiling and about 26” into the room, so the ceiling height in these areas is about 87”. I will try to post a rough drawing.
If the projector is close to the back wall and the screen is tight against the front wall then I am guessing that the distance from projector lens to screen would be around 10 feet.
I think that a 2:35:1 or 2:40:1 screen that is about 110 inches wide (120 inches diagonal) or 115 inches wide (125 inches diagonal) would be a good size (but this could change once I get a projector and test the image size for preference). For now, I will consider these sizes as ideal.
My biggest question:
1) Based on the above info, how will the Navitar HDSSW08 and HDSSW065 conversion lenses perform regarding maintaining the video quality/sharpness coming out of a 4K projector with 4K sources?
2) Are there conversion lenses by other manufacturers that are worth considering?
I would especially like to hear from those with first hand experience (if there are any) using such a lens with a JVC (or other) projector.
I am not considering an anamorphic lens because from what I remember reading, the affordable ones would not work well from this distance (even with a curved screen).
3) Is there any other issue with using the conversion lens when the projector is at the closest/maximum zoom (i.e., projector is located as close to the screen as possible vs. farther away) as in my situation? For example, any issues with vignetting, distortion, chromatic aberration etc... ?
I would like to try it out and see for myself regarding the sharpness quality (not to mention other quality factors such as maintaining colour fidelity).
However, I need to try the lens and projector combo first in order to decide an appropriate screen size.
The problem with this is if I do not have a screen when I try the lens then I can not determine how good the lens is.
Thank you for your assistance.