Thanks Bruce.
I quess what i meant by "True" was having the lens in
A setting and let the camera do its thing.Poor choice of a
word i quess.
>From what i saw with the M lens the flash/camera seemed to do what
its supposed to.They were junk shots but looked fine.
Any thoughts on the film.I am humming between Portra 160 VC or Nc or Kodak RG 200.
Dave
> David,
>
> It seems you are confused about the TTL. I'm not sure what you mean
> by "True". Basically TTL means that the camera body meters the film
> plane for correct exposure and turns the flash off when there is
> enough. The big advantage is that you can choose any f-stop you want
> within the power range of the flash. Using an A lens on A setting
> will only accomplish the camera setting the f-stop for you. The net
> difference of using an A lens set to 5.6 and an M lens set to 5.6 is
> nothing. Of course, letting the camera set the aperture for you
> somewhat defeats the reason for TTL. You could have just as easily
> use the flash's sensor in A mode.
>
> So, in summary, you don't need any A lenses to get TTL benefit. Pick
> your F-stop and go for it.
>
>
> Bruce
>
>
>
