Zeiss microflash device operating instructions . Available to purchase for immediate download. Below is an extract from the manual converted to text for a quick impression on the content. Zeiss microflash device operating instructionsMicroflash DeviceEnergy Flash Sequence The flash device stores on electrical energy of The condensers are practically fully recharged 2x30 Wsec. Normally the switch on the flash 3 seconds after a discharge. This is indicated by generator is set at 30 Wsec. Only if this results a pilot lamp on the flash generator. Then the in underexposure (with high magnifications and next flash can be released. To avoid overheating dark-field illumination) is the energy increased of the flash tube it is recommended to release twofold, switch position 60 Wsec. The photo- no more than lo flashes within 1 minute at graphic effectiveness of the two steps is as 1:2. switch position 60 Wsec., and then to pause for 15 minutes. There are no limitations at switch position 30 Wsec. The required waiting periods usually occur as a matter of course due to the necessity of ad- vancing the film and checking the focus of moving obiets. Kind of light The spectral energy distribution approximately corresponds to that of mean daylight, hence to a color temperature of 5500 to 60000 K. Accord- ingly, a daylight color film without any color filter should be used for color photographs.