![]() ![]() Split-grade mode, in which exposure can be controlled using one channel while the second can be usedto adjust contrast. Two completely independent channels, each having separate base and burn-in exposure times. If the base exposure is changed, the burn-in exposures are recalculated to maintain the density relationships. Nine subsequent exposure times can be programmed, each calculated either relative to the base exposure or the total exposure time thus far.īurn-in exposures are set in steps of 1/12th to 1/2 f-stop. Coarse/fine button toggles between 1/24th and the set coarse time step. The coarse step size can be set to 1/2, 1/3, 1/4, 1/6 or 1/12 of a f-stop. ![]() The fine step size is 1/24th f-stop (approx 2%). All exposure times are set in coarse and fine steps of actual exposure rather than simple seconds, producing consistent changes on the paper. And if the base exposure is changed, the StopClock recalculates all the burn-in exposures to maintain the correct density relationships!īase exposure time 1.0 seconds to 240 seconds, in steps of 1/24th to 1/2 f-stop (or of 0.1 or 1.0 seconds in linear time mode). The two channels make split-grade printing a breeze, and there's even a special mode which effectively allows the exposure and contrast of variable contrast paper to be controlled separately. No times to remember, no fiddling with timer settings in the dark. Using our F-Stop exposure system in conjunction with a built-in automatic test strip generator and ten exposure memories per channel, you can set up a complete printing sequence quickly and easily, often with reference to just a single test strip! Once the paper's on the easel and the lights are switched off, making the print becomes a simple matter of pressing the foot switch and shading the relevant areas of the print. Easy to use if you're beginning and yet versatile and powerful enough for professional printers. ![]() The StopClock Professional Timer really will save you time and paper!Ī Two Channel F-Stop Enlarger Timer with dry-down compensation and 1/24th stop resolution. ![]()
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