At 23:18 4/9/99, Chip banged away continuously on his keyboard until he hit
the send button with his mouse:
>Does anyone have some tips on using T-20/T-32 for fill flash outdoors? I
>have an OM-4 ; no OM-4T. Thanks,
Here is how I do it with the same combo of OM-4 and T-20, T-32 *and* F-280
using TTL OTF mode:
1. Make sure the camera is in Auto mode with the ASA set for the film
speed you are using, and the compensation ring on the ASA dial is set to ZERO.
2. Mount the flash to the camera but leave it *OFF*.
3. Aim at your subject, focus, and with the flash unit *OFF*, adjust the
aperture ring until you get a 1/60th shutter speed.
Note: This is the sync speed for the flash unit and you will also be
properly exposed without any flash for the scene's ambient lighting.
4. Turn the flash ON.
Note: This "locks" the camera at 1/60th so the shutter speed cannot change
and the overall scene will stay properly exposed for ambient lighting.
5. Turn the compensation dial (without lifting it) counter-clockwise from
+2/3 to +2 compensation depending on how much fill you want.
Note: The dial moves in 1/3 stop increments. If you are compensating for
mottled shadowing caused by small tree branches over an otherwise sunlit
subject, you probably want more fill (+2/3 to +1). If you want only to
make eyes sparkle and enhance contrast slightly on a deep overcast day, you
probably want less fill (+1-1/3 to +2). Experience in doing this will
develop a sense of how much fill *you* want. Everyone's preferences are
different. This "fools" the TTL OTF metering into thinking the film needs
less light from the flash.
6. Shoot the number of frames you wish of the subject. Repeat steps 3 - 5
if ambient lighting changes.
7. Remember to turn the flash OFF and reset the compensation dial to ZERO
when you are done with fill flash.
To reiterate what you have done. You are using the aperture ring to find a
proper non-flash exposure at 1/60th second for the overall scene. You are
then fooling the flash unit and TTL metering combination into thinking you
need less light. However, the camera will remain locked at 1/60th shutter
speed as soon as the flash has charged.
I recommend you try this with a victim, er subject , on some non-critical
photographs and experiment with different fill levels (compensation dial
settings) both in mottled shade with bright sunlight and under deep
overcast. Keep records of what you did for each frame and then look at the
results. You can then choose what settings please you most for your own
fill-flash work.
Fortunately the OM-2[n, sp] and OM-4[t] use the TTL mode on the T-20, T-32
and T-45. This method should also work if you are using an F-280. There
is a different way to do this with a T-20 or T-32 in Auto (using the sensor
on the front of the flash unit) but it is more complicated and more
difficult to control how much fill you get.
Hope this helps you out some,
-- John
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