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Olympus OM-4 / OM-4T

The high-tech pinnacle of the OM series of 35mm SLR cameras made by Olympus.  The OM-4 was introduced in 1983 and continued in production until 1987, when it was modified with titanium top and base plates and sold as the OM-4T until 2002.  The camera has a horizontally-traveling cloth shutter with a top shutter speed of 1/2,000th.  The automatic exposure modes are capable of timing exposures out to as long as four minutes.  The OM-4 was also the first camera with a multi-spot meter, capable of spot metering up to eight different spots in the frame and averaging them to get to the best exposure.  The camera also has better weather sealing than previous OM models, as well as a dedicated hot shoe - differing specifically from the OM-1 and OM-2, which required a separate hot shoe accessory to be attached to the top of the camera.

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