Ignalina Nuclear Power Plant System Descriptions > 자유게시판

To reduce emissions of noble radioactive gases. When noble gases pass by means of it, their exercise is decreased because of pure decay. Test pictures had been taken at a distance of 5 feet, which was chosen as a result of it being a typical distance for indoor portraits, and likewise with a purpose to accomodate the Kako Mite's fastened flash output (with ASA 80 film and the cameras' f/8.8 lenses, optimum exposure should be at something around 5 ft). Since this is a manual flash and so was already working at full energy, I moved the camera to 3.5 toes from the check target (the digital camera's minimal focus). With 100- through 300-series cameras, you would possibly be able to get away with utilizing a manual flash at nearer distances than the computed distance, but you should not rely on the digicam's metering system to supply the proper exposure mechanically. The other flash is a rather typical low-finish handbook shoe-mount flash, a Kako Mite.

So, to make a protracted story quick, I've now carried out a number of somewhat controlled experiments with electronic flash on 'basic' Polaroid automatic pack cameras. When looking for a bracket, nonetheless, make certain and measure the bottom of the bracket-- or, better yet, deliver your digicam alongside-- many flash brackets aren't lengthy enough to accomodate the width of a Polaroid pack camera (especially for the reason that tripod socket of those cameras is method over on the suitable-hand aspect of the digicam's base). Don't bother trying to 'idiot' the digicam by using the special Polaroid flash connector. Then I took an analogous collection of images utilizing the Model a hundred camera. I'm a bit curious as to why it was at all doable to take an overexposed photograph using the Rollei flash (in automatic mode) on the 100, however not one of the pictures taken with that flash on the 450 confirmed this tendency, Facebook even when the shutter remained open after the flash fired. Actually, it was closer to appropriate publicity than was the fourth check (above) utilizing this digital camera, and may not be considered utterly objectionable in some conditions.

I thought about scanning all the check images and arranging them in a chart of some type, however the scanned model seem so different from the original photographs that a variety of the distinctions between them get misplaced in the method. But, since all the earlier take a look at images utilizing this flash (at 5 ft from the goal) evidenced underexposure, this isn't too stunning from that vantage both. The third test photograph was made using the Kako Mite, and this one turned out slightly underexposed, but higher than with the 450. As with the Rollei flash, the shutter closed immediately after/in the course of the firing of the flash. All the photographs taken in this take a look at were taken from the identical position (digicam was mounted on a tripod) at the same check goal. The 450 (and the other 400-sequence cameras) handles daylight images the identical method as the sooner cameras, but flash autoexposure is fully totally different. This is actually the identical method the camera handles bizarre daylight images-- the metering system operates dynamically through the exposure.

This picture turned out correctly exposed (although perhaps just barely overexposed) and served as a management case for comparability with the other tests with this camera. This photo turned out correctly exposed, and served as a control case for a basis of comparison. The resulting photograph was moderately underexposed (slightly extra so by comparability with the Kako flash on the 450), however nonetheless might be thought of an appropriate photograph. This perforated disc is current during all 'normal' current light exposures, so it is fascinating that removing it (thus letting more mild hit the metering cell) truly resulted in overexposure with the digital flash. 490 flash. Using the particular plug will restrict the publicity system to a fixed shutter pace. Your expertise may (and probably will) differ depending on the particular flash you employ. Since there are actually thousands of various models of flashes on the market made by dozens (if not hundreds) of various manufacturers, there's no method for me to know whether or not or not your specific flash/camera combination will work to your satisfaction. Two very different electronic flashes were chosen for this experiment. The steam piping is so arranged that every steam separator is connected with two turbines.