Re: [APML] 400F (was: Alternative Anti-Vignetting Photoshop Technique)

["Marco Lorenzi" <lorenzi@libero.it>]

Hi Matt
> Marco Lorenzi wrote:
> > ...The only problem to me is that it is slow, I mean that definately it
> > is not a 400 asa. A magazine here in Italy rated it 320 asa dor daylight
> > work...
>
> But slow by itself is not a problem.  You just expose for longer.  It is
> reciprocity failure that can be a real problem, because after some
> period of time, film can virtually stop responding.  However, it has
> been my impression that slide films like 400F (and E200) have relatively
> little reciprocity failure, and hypering does not help.
>
It was my impression either. About hypering quite frankly I don't know. Are
you sure that (at least for Fuji's) doesn't help. I would like to have time
to do some test but wether and time don't help me in this task. Perhaps in
the future...
>
> Don't you think that, at midrange focal ratios (i.e. f/7), 400F will
> record as much (across the board) in 90 minutes as any unhypered 400
> speed print film (e.g. RG400)?
>
You are right,  but for me caming from a fast system (f/4) where in a night
you can get a dozen pics 90 minutes are loooong :-)
I had very good experience with the old PJM (rip), no much with many other
films. What in any case I really love is the gain reduction of new
generation films: 40F and E200 have a much better aspect when scanned that
PJM and now digital processing most of the time doesn't "kill" the natural
"photographic" aspect of the objects :-)
>
> Also, 400F (and E200) can be push processed.
>
Never tried it pushed, does anybody? Hopefully it can be hurtless also for
Fuji...

Marco
http://www.astrosurf.com/lorenzi


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