If you install Magic Lantern (third party free firmware) you can create custom cropmarks for different aspect ratios that will display on the screen in Live View.
Mosaic Engineering makes an optical anti aliasing filter for DSLR video. It is designed for people shooting video who are experiencing moire/aliasing beyond what the built in filter can handle. http://www.mosaicengineering.com/products/vaf/txi.html
I'm assuming your adapter doesn't have a chip. If it did you should get 00 in the aperture display. You can purchase a dandelion chip for the adapter, this will allow the camera to "see" the lens while also telling it that there is a manual lens moun...
