I'm using a Exa 1b camera with a Carl Zeiss Jena 50mm F2.6 Tessar lens. I've just got back to Sweden and I only have a Kodak TX400 film to hand. Is every shot going to be pretty much completely overexposed? Shutter speed only goes up to 1/175 and I like the use of focus, I wouldn't want to take everything on F-22. Many thanks, Will.