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The bulb setting allows the shutter to stay open for as long as necessary for long exposures
Matrix Balanced Fill-Flash
Yields full emulsion speed and good shadow detail with normal contrast
It is specifically recommended for dish/tray processing of paper or deep tank processing of film
Pentax 300mm F/4 SMC Manual Focus K-Mount Lens Camera Bags The bulb setting allows theThis type of lens has great magnification compared to a normal lens. This range starts at approximately 300mm. This would magnify the image by 6 times compared to a 50mm normal lens on a 35mm full frame or digital full frame sensor. If it is used with a smaller sensor, the focal length is magnified by a factor of typically 1. 5 times, that would make it equivalent to 450mm on 35mm full frame. These lenses have a much longer minimum focus area and can