Minolta 2800 AF Flash
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The 2800 AF is a high performance medium-sized flash with a calculator on the back. It does not bounce. Its performance is high, with a built-in infra-red AF illuminator, a great standby circuit so it can be left on all the time and modern thyristor circuitry for super-fast recycle times, however the early MAXXUM cameras weren't very smart in terms of exposure flexibility and sync speeds.
The 2800 AF may work on the newest Sony Alpha cameras, which descend from MAXXUM.
The 2800 AF uses a standard hot shoe. Minolta and then Sony used a screwy new shoe from about 1988-2012, and Minolta made adapters so that this flash will work on the slot-style hot shoe.
The 2800 AF has a long 15 minute standby time-out. It goes to sleep all by itself after 15 minutes, and wakes up with your camera. Therefore it's AOK to leave it turned on all the time.
Beside more power than the 1800 AF, the 2800 AF adds a special "lo power" mode for super-fast recycling - but it has only one-quarter the range of the 2800 AF's regular mode.
Rated guide number 92 feet (28 meters) at ISO 100.
(Rated guide number 66 feet (20 meters) at ISO 100 with wide adapter.)
Rated guide number 23 feet (7 meters) at ISO 100.
(Rated guide number 16 feet (5 meters) at ISO 100 with wide adapter.)
Program Mode Distance Range
Program mode forces f/2.8:
2.3 to 33 feet at ISO 100.
(2.3 feet to 23 feet with wide adapter at ISO 100.)
In Lo-Power Mode
2.3 to 8.2 feet at ISO 100.
(2.3 feet to 5.9 feet with wide adapter at ISO 100.)
TTL only, as controlled by camera.
Rated to cover a 35mm lens, to 28mm with wide adapter.
3.3 to 16 feet range.
1 to 4.5 meters range.
Rated 180 to 2,500 shots on alkaline.
Rated 90-750 shots on 1,000 mAh Ni-Cd.
Rated 180-1,500 shots on 2,000 mAh Ni-Cd.
Rated 50-1,250 shots on "heavy-duty" cells.
Rated 6.5 to 0.2 seconds on alkaline.
Rated 4 to 0.2 seconds on Ni-Cd.
Rated 10 to 0.3 seconds on "heavy-duty" cells.
Automatically goes to sleep after 15 minutes.
Wakes up as soon as a MAXXUM camera wakes up.
Rated 3-7/8 x 2-3/4 x 3-3/8 inches.
Rated 99 x 70 x 86 mm.
Rated 7.75 oz. (220g) empty.
Made in Japan.
May 2013: about $15 used.
The 2800 AF is a medium-sized flash for use with MAXXUM cameras. It offers more than twice the power of the 1800 AF and will recycle even faster under the same conditions as the 1800 AF, but the 2800 AF is much larger. Neither bouces or offers any exposure mode other than TTL.
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