Nikon Image Converter User Manual

Contents

35If the image does not appear as sharp as expected, there is a back focus adjustment on the relay.But before we change the setting of the back focus it is important to realize that the imagephotographed by the camera is generated on the focus screen inside the Mini35. This focus screenlowers the contrast of the image somewhat in a way similar to the effect of a low contrast filter. Thisis desirable since it removes some of the electronic detail artifact typical in a DV image, eventhough at a quick glance the image may appear less sharp than the one recorded by the unfilteredoriginal lens.Test if the back focus is properly adjustedPlace the camera with the Mini35Digital image converter mounted with a 35mm lens, in front of ahigh quality test definition chart, such as the Putora 7A9 chart. The iris on the relay should be fullyopened. The film lens should be focused by eye to the point of best resolution (highest number ofcircles visible on the Putora chart). Without changing anything else, close the iris of the relay acouple of stops. The resolution should not visibly increase. If it does, the back focus of the relayneeds to be adjusted. See the following steps to adjust the relay back focus. PANASONIC