Hasselblad H extension tubes are designed for use with HC lenses and enable them to focus at closer distances. The greater the extension, the greater the magnification of the image. The tubes can be used individually, in combination with each other or in comÂbination with other accessories according to the application or desired effect. H extension tubes can only be used together with Hasselblad H cameras and HC lenses.
Tubes can be attached either to the lens first or directly to the camera, whichever is preferred. There are no restrictions about the combination or order in which tubes are mounted. They can be used together with any HC lens though conventional practice regarding the unsuitability of certain lenses for close-up work still applies. Extension tubes can also be used in combination with a Converter H 1.7x, though in this case they should be mounted between the converter and the lens. Autofocus remains operable until a message is displayed on the LCD stating that autofocus is no longer possible with that specific combination and setting.