On Thu, 25 Jul 2002 13:34:42 +0100, T. P. wrote:

>"HJK" wrote:
>
>>I have an F100 and and SB28 and have been getting inconsistent results. Most
>>of what I have been shooting is terribly underexposed. I decided to attack
>>this in a more scientific manner. I set up a test of a single consistent
>>subject, using velvia, an 80-200 2.8 with an extension tube (kenko), and
>>shooting an object about 2 feet away which is mostly what I would use flash
>>for.

>This doesn't address your problem, but I wondered why on earth you
>were using a single on-camera flash for subjects that are so close.
>It seems to me that a ring flash or a pair of matched flashes on
>brackets would be far more suitable. A purpose designed bench for
>shooting small items with flash would be even better.

look at "bugs" at:
http://www.David-Ruether-Photography.com/phun.html
Most were shot with a single flash, preferable to
a ring light or dual flash to keep the shadows
singular (and existent). The flash head is placed
near the end of the lens and aimed at the focus
area. Since the flash head is so large compared with
the subject, it works like a softbox, but without the
too-low contrast of the ringlight...

>But an F100/SB-28? Not a good choice, in my view.

???????????
There aren't too many better, for most purposes
with 35mm... As for the original poster - I think
someone hit it right that the tubes were not
feeding back all the necessary info for the mode
selected. Better, perhaps, is straight TTL (all
I ever use with this gear, since it is more
predictable in effect, and can therefore be modified
as needed in a more informed way...