OLYMPUS F280 FLASH FOR OLYMPUS OM-4T / OM-4Ti *MINT WITH BATTERIES From the Web: "The Olympus F280 flash unit can be regarded as the world's first electronic flash to permit full synchronization at all focal plane shutter speeds. A theory based on older FP (Focal plane) Bulb flash mode where a series of short burst of light* in continuous stream "substitute" and "emulate" the emission of light when used a long burning light flash bulb in an electrical form (The flash duration in Super FP Mode of about 1/25 sec. is some 40 times longer than normal electronic flash, affording full synchronization at all shutter speeds). * Most auto flash provides an intense, short duration of 1/1000 - 1/100,000 sec flash burst, that can only expose the film correctly when the shutter is completely open which we normally termed it as workable sync speed; a Super FP flash emits a continuous series of short bursts, like a very fast stroboscope (Repeating flash), from the moment the first curtain starts to travel to the moment the second curtain arrives. This allows the flash to be synchronized at shutter speeds from 1/60 sec to 1/2000 sec. . The F280 is a clip-on type flash unit with with a Guide Number of 28m (100 ASA, TTL "OTF"Auto Mode or Manual Mode) and offers a selection of three modes: Super FP, Normal OTF and Manual. When NOT operating FP mode, the flash is also usable on other OM bodies as a dedicated flash units. The extra high shutter speeds available for flash photography permit the photographer to have the freedom to select desired lens aperture allows use of wide open apertures to blur background and put emphasis on main subject. The normal coverage (74°) for the F280 can be extended by using an optional Full-Synchro Flash Wide Adapter and extend its angle of coverage safe for even a 21mm lens. This flash can be mounted in the Power Bounce Grip 2 for off-camera bounce operation or via the TTL Auto Cord F0.6m for off-camera operation." Condition Excellent mechanical a...

• Full-synchro Electronic Flash for Olympus OM-4Ti Camera