> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Gerry Morgan
> Sent: Friday, August 30, 2002 6:04 AM
> To: [EMAIL PROTECTED]
> Subject: Re: EOS 3 metering deviation
>
>
> Hugo Lopes wrote:
> >If the problem really bothers you, either leave a permanent exposure
> >correction on the camera (not the solution I like the most) or have the
> >meter calibrated the way you want.
>
> Does anyone know a repair shop that will recalibrate an EOS 3
> meter the way
> I want it? Before I sent my EOS 3 to Canon, I tried to find an
> independent
> repair shop, having had some bad experiences with Canon's repair
> facilities, but no one else would do it (some said they couldn't do the
> repair because it involved the camera's electronics). Ideally,
> I'd like to
> find a repair shop in the US, but perhaps others on the list would be
> interested in other locations.
>
> Gerry
>
>
Hi All,
Why not send it to a Canon regional repair center? They are Canon, not just
some local "authorized" service center who filled out a form and sent it to
Canon. They will have the correct calibrated equipment to adjust your meter
to factory specs OR to adjust it to read true for your film and lab. I
don't have an EOS 3 so I have never had to use them for this. But when I
had a pair of EOS 5QD bodies and they both broke down at almost the same
time I took them to the Irvine Regional repair center and had them back in a
3 days as good as new. It's funny that the EOS 5QD bodies I used to shoot
with gave nearly perfect exposures with chromes and both metered the same
scenes identically. When I switched to the EOS 1n and 1nRS bodies they
metered slightly differently and have to crank in a little bit of exposure
compensation adjustment. All of my EOS 1n's and 1nRS meter virtually the
same though so this is not a big deal to me. regarding the exposure
variations people seem to see, unless the exposure readings are way off they
are usually due to film and lab variations from what I can tell. When I
take film to a lab I don't know I will always shoot 0/0 and hope for the
best. For my own labs I shoot with compensation and have never had a
problem. Of course I frequently check the camera meter's exposure with an
incident meter and sometimes make adjustments but the labs I use are very
consistent and I can rely on them to process film reliably when exposed
using common sense and my good calibrated handheld meter.
You can confirm how well your meter readings track with a good fully
calibrated (includes not only EV at fixed light level but a full span
adjustment for linearity), handheld incident meter and a large, flat, evenly
sunlit wall of any medium color. Starting at the brightest or darkest part
of the day in the life of the wall, go to the wall and using a fixed lens or
zoom at a fixed focal length and shooting from the same position read the
light falling on the wall with the incident meter, write it down. Check the
exposure with the camera set to whatever mode metering pattern you want to
check, use manual exposure mode so all you get will be a meter reading, this
will reduce confusion on your part. Be sure to fill the frame with the wall
only (for bodies with less than 100% viewfinder bodies, anything lower than
an EOS 1n or EOS 1d, get even closer to be certain of this), and NO
surrounding areas, write it down. Go back to the wall and take another
double reading, once with the incident meter, then with the camera body as
the wall gets lighter or darker until the wall has experienced the full
range of light. Do the same thing every 2 hours or so and be sure follow
the same procedure and remember, write it all down! At the end of the day
you should have a good log and be able to see how accurate and linear your
camera's meter is.
You can also see the effects of changing lenses this way by simply changing
primes or in the case of a zoom the working focal length and following the
same procedure. If you don't have a good incident meter buy one, you don't
know what you are missing. Short of this you have no repeatable level
reference to the light and your "problems" may be in your processing or a
the way you are using the metering system. The metering mode makes a
difference in the readings even with an evenly lit flat wall of the same
color and evaluative metering is the worst and least predictable mode to
shoot in.
Hope this helps.
Cheer/Chip
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