Originally Posted by nexus99
I am really looking for a scaler that will let me keep an A-Len permanently in place in from of my projector. The Lumagen will do it... but it seems super expensive just to use as a scaler.
If your projector is 4k and you need to process 4k video, your options are either the Lumagen Radiance Pro, which is very expensive, or an OPPO 203, which is out of production and also very expensive to acquire today, though probably less so than the Lumagen. Either one will do what you describe.
The Lumagen has auto black bar detection, meaning that it will analyze the image and engage the proper scaling to fit it on your screen CIH without you pressing any buttons. (However, note that the switch is not really fast enough to deal with Variable Aspect Ratio movies like The Dark Knight.) It also has much more granular scaling to deal with even oddball aspect ratios like 2.0:1 and 2.2:1.
The OPPO 203 requires you to manually change the zoom setting for each aspect ratio. It also only basically has two settings: 16:9 or 21:9. So it's not as convenient for those oddball ratios.
The upcoming MadVR Envy promises aspect ratio controls comparable to the Lumagen Radiance Pro, including auto black bar detection, but it will also be priced comparably to the Radiance Pro.
If your projector is only 1080p, there are older scalers (mostly Lumagen) and OPPO players that can probably be acquired cheaper. Only the Radiance Pro model has the auto black bar detection, however.