For the last year, I've been wanting to start out with a 5x7 camera because the format was close to the 35mm ratio (If only they made 6x9inch film and cameras, or better yet 8x12 ). Also, I dont have a 4x5 enlarger, nor do I have the space for one as my my darkroom for the time being is an old, small storage shed from the 70's that I aquired from my grandparents after they died, so contact printing is pretty much the only option for me. Since I'm pretty much limited to contact printing, I've felt 5x7 is pretty much the smallest I was willing to go until recently. I've been considering 4x5 contact prints lately; I am not sure if that's the best route for me to take, however, because I'm also at the point where I think I'm good enough to start selling my photographs. How would I sell 4x5 contact prints? Postcards? I'm not sure if I could do that; digital pretty much has the cheap, mass produced photography market, and I dont think I could compete with $0.35 - $0.50 digital inkjet postcards and make enough money to keep me satisfied (and it doesnt take much money to keep me satisfied ). I do have a Beseler 23CII enlarger, but I've been so turned off on enlarging ever since I graduated from my local community college that I've pretty much only used it as a light source for pinhole 5x7's for the year I've been at UAH getting my bachellor's degree. That's a long story in which I dont want to go in to detail here. Now saying all that, I have found a 4x5 camera I have an interest in. If anyone can give me wisdom on my concerns, that would be greatly appreciated. Should I wait for the right 5x7 to come along or should I go ahead with the 4x5 route? This is the 4x5 I've been considering http://cgi.ebay.com/Calumet-20-inch...490285299?pt=Film_Cameras&hash=item20b5dfa0f3 I noticed that the ground glass is set inside a round section on the back (the second picture). Is that a rotating back or just a convenient way to attach the ground glass ans film holders? Also that black plastic thing on the monorail, is that how the camera attaches to the tripod?