Anyone have any tips/tricks/suggestions about an Agfa Karat 36? I just picked up one at an online auction for cheap (I know, shocker, seeing ME posting something about a 35mm rangefinder camera???). Are these considered equivalent of the Kodak Retinas of the period? I got one with the Rodenstock Heligon f2 lens. Are there any accessories besides the never-ready case (which mine comes with). Lens caps? Hoods? Many thanks!