You're welcome. The lens feature is not a common feature at all, quite unique in fact. However, you have absolutely no need for this with a 1.78 screen.
So leave it defeated. OTOH, you can make a few presets. Let's say a much reduced one for SD sources. Somewhat larger for "okay" or "upconverted" by the provider "HDTV", or "HD lite". Bigger yet for good "HDTV". Full blown for BD. Hehe.
Here is a great tool for us in finding stations and respective signal strength.
http://www.tvfool.com/?option=com_wrapper&Itemid=29
I dunno what happens if you try a Canadian address, but here is a blurb they have on CA.
http://www.tvfool.com/index.php?option=com_content&task=view&id=76&Itemid=59
Yeah, all the HD signals are compressed from the beginning. It's just that cable and sat providers compress them yet
again. Even amazing blurays have to use compression, whether VC1 or MPEG4 of whatever. You know it was interesting to see in the beginning that it was some videophiles who were the biggest supporters of the advanced audio codecs: They wanted the extra disc space to further decompress their video.