The J-8 is based on the pre-war 5cm F2 Carl Zeiss Sonnar, and is available in Leica thread mount and in Contax/Kiev mount. The LTM version is normally limited to 1M close-focus. I removed the close-focus stop. The J-8 at its normal 1M min focus, wide-open at F2, on the EP2. Subscribe to see EXIF info for this image (if available) At its new closest focus. Subscribe to see EXIF info for this image (if available) The infinity stop also acts as the new close-focus stop.