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Re: [OM] Buying a used F280 flash

Subject: Re: [OM] Buying a used F280 flash
From: WKato@xxxxxxx
Date: Sun, 14 Jan 2001 13:33:57 EST
John, here's some specs on the F280. You will need an OM-4T, OM-3T or OM-77 
to check out the Super FP flash.

F280 Specs 

Guide Number:28 (ISO 100, meters at NORMAL "OTF" Flash Mode), or 91 (ISO 100, 
feet)
Coverage Angle:53 degrees verticle, 74 degrees horizonal
Flash Duration:Super FP Flash emission: 1/50 - 1/25 sec. (with OM-4T), 1/70 - 
1/30 sec. (with OM-77AF) 
NORMAL "OTF" Flash emission:1/40,000 - 1/1,000 sec.
Flash Mode selection:OM-77AF: Automatic selection between Super FP 
Flash and NORMAL "OTF" Flash.
OM-4T: Super FP Flash, NORMAL "OTF" Flash and Manual selectable.
OM cameras with "OTF" AUTO Flash mode: NORMAL "OTF" and Manual 
selectable.
Cameras without "OTF" AUTO Flash mode: 
Manual.Recycling Time:(With R6 (AA) alkaline batteries) 
Super FP Flash mode: 5 - 10 sec; 
NORMAL "OTF" Flash Mode: 0.2 - 2.2 sec.
Color Temperature:5,800 degrees K
Camera mount: Clip-on method: shoe-inserting, lock-screw.
AF Illuminator:Automatic actuation in low light (with OM77AF)AF Range:1.5m - 
5m (with OM-77AF and AF 50mm f1.8, ISO 100)
Power source:R6 (AA) battery x 4 (Ni-Cd batteries can be used).
Dimentions and weight:110 x 68 x 71mm, 250g. (less batteries)
NORMAL "OTF" Flash Range Guide:(ISO 100) 
Working range:for guidance only (ISO 100)
F1.2= 3.4 - 23.0m (11.1-75.4ft)
F1.4= 2.8-20.0m (9.2-65.6ft)
F2= 2.0-14.0m (6.6-45.9ft)
F2.8= 1.4-10.0m (4.6-32.8ft)
F4= 1.0-7.0m (3.3-23.0ft)
F5.6= 0.7-5.0m (2.3-16.4ft)
F8=  0.5-3.5m (1.6-11.5ft)
F11=  0.36-2.5m (1.2-8.2ft)
F16=  0.25-1.8m (0.8-5.9ft)
F22=  0.18-1.3m (0.6-4.3ft)

Super FP 
FlashGuide Numbers (ISO 100, m (ft.)) 
Shutter SpeedOM-77AFOM-4T
1/2000    3.1(10.2)2.6(8.5)
1/1000    4.3(14.1)3.7(12.1)
1/500     6.2(20.3)5.2(17.0)
1/250    8.8(28.9)7.3(23.9)
1/125   12.4(40.7)10.4(34.1)
1/100   15.6(51.1)--
1/60 or slower -- 14.7(48.2)
------------------------------------------------------------------------

F280 Accessories 

TTL Auto Cord F0.6m: For use with the F280 off the camera. Wide Adapter 
F280: Widens flash angle to cover picture area of 21mm lens. 

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