C.H.Ling wrote:
> It is a little strange, for ISO800 test the F31fd was using 1/340s F5.6 but
> the F200EXR was using 1/75s F12! It will sure hurt the details.
>
Hard to fault the testers. The F200 is in the line of fully automatic
Fuji F series cameras. so far, only the F11, 30 and 31 have any
aperture/speed preferred and manual controls settings. So if they want
to take a test shot with their standard setup and lighting, they get
what the camera gives them.
On the other hand, can we be sure f12 is a bad choice?
I think it is also possible that the Fuji engineers aren't actually
stupid. Oh my, looking further into the review, we learn:
"Like many compact cameras, the F200 only allows only two aperture
settings at each position of the lens (fully open and fully open minus
three stops, by way of a combined physical stop and ND filter)."
So, f12 is just the smaller "stop" at the particular focal length
chosen, and not a "true" f12 focal ratio of aperture and focal length.
It's a shame the true , useful meaning of f-stop will now disappear, at
least in digicams. On the other hand, it's a smart solution to the
exposure vs. diffraction blurring problem. I think some high end Canon
digis have, or have had, built in ND filters as part of their AE system
for years. I wouldn't be surprised if it's fairly common, but
unannounced, practice.
Looks like all the theoretical calculations may be at least partly
useless for these tiny sensor cameras, as well as DOF calculations.
A lot of people bash the dpreview reviews, but read throughly, they
contain pretty much all the important stuff. I often won't agree with
their conclusions/ratings because my priorities difffer, but I can
usually find out what I need to know for my own evaluation.
Moose
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