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Re: [OM] Tamron 500/8 mirror - better resolution than Zuiko, but pooer

Subject: Re: [OM] Tamron 500/8 mirror - better resolution than Zuiko, but pooer contrast. $150
From: Roger Wesson <roger@xxxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 12 Sep 2002 18:01:15 +0100
The ducks are cool. Looks like pretty decent contrast, and the classic mirror ugly bokeh is only noticable if you're really searching for it.

Like the moon shots too. Never tried three converters before! It's good to see a magnified section of moon, even if the sharpness isn't the best. As far as metering goes, remember that as the moon is lit by the sun, you can follow the sunny 16 rule and ignore what the camera is telling you - although as the moon only reflects about 7-80f the light falling on it, and the sunny 16 rule applies for 18% reflectance, making it a sunny 11 rule might work better. With print film it probably wouldn't make a difference.

Roger

Daniel J. Mitchell wrote:

 As promised, some recent shots taken with this.

http://www.danielmitchell.net/gallery/index.php?pageType=folder&currDir=./ta
mron500sp

 A couple of those are some attempts at astrophotography stacking
teleconverters -- it's scary how many of that roll came out blurred all to
heck, even using self-timer to get mirror lock up.  That said, the quality
through three 2x converters, while not exactly sharp, is better than I'd
expected.

 The other funny ones are the ones where the moon's smaller in the shot, and
the metering gets very confused; it looks like a photo of the sun, given how
bright the final image is.

 (there's a cheap one of these on mxv at the moment, has been for a while;
says 'hood is dented', which could mean anything, but the hood's not the
important part here really)

 -- dan




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