I used to have an Olympus OM4Ti (sadly stolen), which also has a black/white
pattern on the first curtain. This camera, like the LX, measures the amount
of light reflected from the film during automatic exposure (aperture
priority). Both cameras use centerweighted metering for this, and I'm pretty
sure the OM40 does too. The pattern on the curtain is supposed to reflect
the same amount of light as the film so that the exposure measuring is
correct even during the short time when the first curtain opens! When the
meter thinks that the film has received enough light the shutter closes.
This method of light measurement integrates the light that has hit the film
during the whole exposure with the following advantages:
- The camera can adjust for sudden changes of the light conditions (clouds
etc)
- The sensitivity for low-light situations improve dramatically, increasing
the meters range from normally EV 0-20 (ca) down to EV -5 (Olympus) and -6,5
(LX) respectively, at the low end of the range. I don't know why the LX is
better than the OM, but I guess the answer, at least on this list could be:
it's a Pentax...
I used the Olympus for automatic night city shots on a tripod with Kodak
Technical Pan film, rated at ISO 25. It was extremely simple: rig the
camera, set the aperture, press the trigger and wait. The exposure was
always perfect!
BTW, the light meter in the Olympus is in my opinion unequalled: OTF film
measurement with the advantages described above AND spot metering
possibilities. Can we hope for this in the rumoured LX/AF-body??
/Erik
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: den 24 juli 2001 19:45
To: [EMAIL PROTECTED]
Subject: LX Curtains Mistery (at least for me)
Hi, gang.
I was thinking the other day (yes, sometimes I do) about the pattern in the
LX front curtain. It's supposed to give a reflectance of a middle gray,
right? Then, why to use white and black points pattern instead of a regular
uniform gray paint?
If somebody has the answer, I'm all ears (in this case, all eyes)
Regards
Albano
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