The F6 on paper is a great sounding camera. The most significant
feature you would be gaining over the F100 is the color matrix
metering for all your lenses. If you shoot significantly with the
vertical grip, you would also be gaining a lot of convenience with the
F6 vertical grip over the F100 grip. For your AF lenses you gain the
color aspect of the matrix metering and for your MF lenses you gain
significantly as in matrix and color matrix metering.

I have both an F5 and F100 and for me the F6 integrates the best of
both and throws in the significant features from the D2* series. The
features that I would use significantly on the F6 are those on the
vertical grip; plus the updated metering and the full featured use of
MF lenses.

I especially like the ability to assign the exposure compensation on
the F100 to the command wheel (the F5 doesn't have that feature).
However, that said I don't use exposure compensation nearly so much
with the F5 as with the F100, the F5 meter is better. So I think that
would be one of my most used features on the F100 that wouldn't be as
necessary on "upgrading" to the F6.

You also gain in the frames per second department.

You will have to research the feature compatibility of the SB-28
further. I don't know much about the backward compatibility in the
strobe department. If you find out, please post. I'm currently using a
SB-80dx and it works well with the F100/F5.

My spouse is pushing any further investments towards digital, however
I'm really drawn to the F6.

Regards,
Roger

It might make more sen$e to wait and see if the rumored F105/F200 (whatever it
is and whatever it ends up being named) comes out in the next while.  Not sure
about the metering with older lenses in the F6 or the rumored camera.

Cheers,
Alan

Like the D2H and D2X, you get matrix metering with AI and AI-S lenses
on the F6.

I would never recommend a body upgrade for anyone who doesn't need one. I
wasn't aware that the F100 can't meter with MF lenses, which totally
sucks, but looking at your lens collection, I would say that if you wanted
a Nikon that can take pretty much any Nikkor lens, you should be looking
at a used F4.

With an AF-S lens on the F4, AF is not a problem, but the real benefit of
using this body is that you can mount and use pre-AI and AI lenses without
any problems. You can even use G lenses in P, Ph and S modes.

The body offers everything a Nikon shooter could ever want, from high FPS,
to 1/8000sec shutter speeds, matrix metering (even with AI lenses), a
boatload of accessories - most notably the MF-23 back, interchangeable
screens and prisms, plus a couple of drive options as well. I have a ML-1
remote control unit for the body that has a range of 60m, plus a remote
trigger that attaches with a cable. If you don't have those then you can
use an ordinary screw in release with the F4s drive option.

I've never owned a more adaptable Nikon body. Long live the F4!!!

BTW, I recently did a roll of slides in my studio with the F4s and the
105mm f/2.5 AI. Wow! That lens rocks!