One shot lens
I am contemplating the purchase of a one-shot lens for 360 panoramas and have several questions about them. I have a Canon EOS 20D, Manfrotto tripod, and stiching software as well as PhotoShop and Photoshop Elements.
1) I know they are all suitable for outdoor panoramas of scenery, but what if I attempt an indoor shot of a room, say 10 by 20 feet, with the camera/tripod up against one wall near the center of the 20 foot length. Then edit with PhotoShop to make it 180 degree panorama only? My concern is the auto focus for the EOS 20D. Since the "back" of the camera will only be 1 foot or so from the wall, and 9 feet or so in "front" of the camera the focus may present problems. Since I won't be using the "back" side of the panorama, it does not matter if that wall is out of focus. My conern is that the "front" side be in focus. (If needed, I can use manual focus. About 75% of my panoramas will be outdoor scenery and the rest interiors of rooms.)
2) Any recomendations of which one-shot lens to purchase?
3) Do these one-shot lens come with special mounting brackets or is this something extra I would need to purchase?
Thanks in advance,
A Nonprofit Organization